{"title":"NixTrainz Decoder Buddy Boards, Lighting Solutions \u0026 DCC Install Accessories","description":"\u003ch1\u003eNixTrainz Decoder Buddy Boards \u0026amp; Model Railroad Electronics\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eNixTrainz\u003c\/strong\u003e has become one of the most trusted names in DCC wiring, locomotive upgrades, and pro-level decoder installations. Their flagship products—the \u003cstrong\u003eDecoder Buddy\u003c\/strong\u003e and \u003cstrong\u003eDecoder Buddy Mini\u003c\/strong\u003e—transform messy factory wiring into clean, organized, and serviceable installs. Whether you’re upgrading to LED lighting, adding cab details, installing ditch lights, or fitting a full sound decoder package, NixTrainz boards make the process easier, faster, and dramatically more reliable.\u003c\/p\u003e\n\u003ch2\u003eWhy Modelers Choose NixTrainz\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCleaner installs\u003c\/strong\u003e with labeled solder pads and organized trace layouts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in LED resistors\u003c\/strong\u003e for ditch lights, number boards, cab lights, markers \u0026amp; more\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility with ESU LokSound, Digitrax, TCS WOW, NCE\u003c\/strong\u003e and all 21-pin decoders\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits HO scale locomotives\u003c\/strong\u003e from Athearn, Walthers Proto, Atlas, ScaleTrains, Kato \u0026amp; more\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfect for sound installs\u003c\/strong\u003e—plenty of open space for speakers and keep-alives\u003c\/li\u003e\n\u003cli\u003eCreated by a model railroader for model railroaders—no guesswork, no headaches\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eThe NixTrainz Decoder Buddy Family\u003c\/h2\u003e\n\u003ch3\u003eDecoder Buddy (HO Scale)\u003c\/h3\u003e\n\u003cp\u003eThe original full-size board ideal for HO locomotives needing maximum functionality and LED output control. Designed to replace restrictive OEM PCBs and open up your locomotive for full customization.\u003c\/p\u003e\n\u003ch3\u003eDecoder Buddy Mini\u003c\/h3\u003e\n\u003cp\u003eAll the power of the standard Decoder Buddy, but in a compact form tailored for tight HO shells, switchers, narrow hoods, and select N scale applications.\u003c\/p\u003e\n\u003ch3\u003eSpecialized Lighting \u0026amp; Auxiliary Boards\u003c\/h3\u003e\n\u003cp\u003eNixTrainz also produces purpose-built lighting boards and output expansion options—perfect for advanced lighting packages, marker lamps, twin-beam ditch lights, and multi-color LED setups.\u003c\/p\u003e\n\u003ch2\u003ePerfect for DCC Installers, LED Upgraders \u0026amp; Sound Conversions\u003c\/h2\u003e\n\u003cp\u003eWhether you're a DIY hobbyist or a professional installer, NixTrainz boards reduce wiring errors, save time, and create a far cleaner, more serviceable layout. These boards are engineered to integrate flawlessly with all major decoder brands including \u003ca href=\"https:\/\/fusionscalehobbies.com\/collections\/esu-loksound\"\u003eESU LokSound\u003c\/a\u003e, \u003ca href=\"https:\/\/fusionscalehobbies.com\/collections\/digitrax-in-stock-dcc-products\"\u003eDigitrax\u003c\/a\u003e, \u003ca href=\"https:\/\/fusionscalehobbies.com\/collections\/tcs\"\u003eTCS\u003c\/a\u003e, and \u003ca href=\"https:\/\/fusionscalehobbies.com\/collections\/nce\"\u003eNCE\u003c\/a\u003e. If you're upgrading a fleet, NixTrainz is the go-to solution.\u003c\/p\u003e\n\u003ch2\u003eShop NixTrainz at Fusion Scale Hobbies\u003c\/h2\u003e\n\u003cp\u003eFusion Scale Hobbies is proud to carry the full range of NixTrainz Decoder Buddy products. We\u003c\/p\u003e\n\u003cp\u003e________________________________________________________________________________________________\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eNixTrainz FAQ's\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-end=\"5159\" data-start=\"4927\"\u003e\u003cstrong data-end=\"4979\" data-start=\"4927\"\u003eQ: What does a NixTrainz Decoder Buddy board do?\u003c\/strong\u003e\u003cbr data-end=\"4982\" data-start=\"4979\"\u003eA Decoder Buddy organizes your DCC wiring, provides labeled solder pads, includes built-in LED resistors, and replaces OEM locomotive PCBs that limit lighting and customization.\u003c\/p\u003e\n\u003cp data-end=\"5289\" data-start=\"5161\"\u003e\u003cstrong data-end=\"5207\" data-start=\"5161\"\u003eQ: Which DCC decoders work with NixTrainz?\u003c\/strong\u003e\u003cbr data-end=\"5210\" data-start=\"5207\"\u003eAll modern 21-pin decoders, including ESU LokSound, Digitrax, TCS WOW, and NCE.\u003c\/p\u003e\n\u003cp data-end=\"5428\" data-start=\"5291\"\u003e\u003cstrong data-end=\"5335\" data-start=\"5291\"\u003eQ: What locomotives fit a Decoder Buddy?\u003c\/strong\u003e\u003cbr data-end=\"5338\" data-start=\"5335\"\u003eMost HO road units from Athearn, Walthers, Atlas, ScaleTrains, Broadway Limited, and more.\u003c\/p\u003e\n\u003cp data-end=\"5565\" data-start=\"5430\"\u003e\u003cstrong data-end=\"5481\" data-start=\"5430\"\u003eQ: What locomotives fit the Decoder Buddy Mini?\u003c\/strong\u003e\u003cbr data-end=\"5484\" data-start=\"5481\"\u003eHO switchers, narrow hoods, and tight shells where the full-size board won’t fit.\u003c\/p\u003e\n\u003cp data-end=\"5694\" data-start=\"5567\"\u003e\u003cstrong data-end=\"5621\" data-start=\"5567\"\u003eQ: Can I use NixTrainz with LED lighting upgrades?\u003c\/strong\u003e\u003cbr data-end=\"5624\" data-start=\"5621\"\u003eYes—each board includes pre-installed resistors for easy LED installs.\u003c\/p\u003e\n\u003cp data-end=\"5825\" data-start=\"5696\"\u003e\u003cstrong data-end=\"5748\" data-start=\"5696\"\u003eQ: Are NixTrainz boards good for sound installs?\u003c\/strong\u003e\u003cbr data-end=\"5751\" data-start=\"5748\"\u003eAbsolutely. They open up more interior space for speakers and keep-alives.\u003c\/p\u003e\n\u003cp data-end=\"5825\" data-start=\"5696\"\u003e________________________________________________________________________________________________\u003c\/p\u003e\n\u003ch2 data-end=\"5825\" data-start=\"5696\"\u003e\u003cstrong\u003eNixTrainz Decoder Buddy vs Decoder Buddy Mini Comparison Table\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 235.125px;\" data-start=\"4334\" data-end=\"4863\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead data-start=\"4334\" data-end=\"4390\"\u003e\n\u003ctr style=\"height: 19.5938px;\" data-start=\"4334\" data-end=\"4390\"\u003e\n\u003cth style=\"width: 21.9559%; height: 19.5938px;\" data-start=\"4334\" data-end=\"4344\" data-col-size=\"sm\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"width: 41.0296%; height: 19.5938px;\" data-start=\"4344\" data-end=\"4364\" data-col-size=\"md\"\u003e\u003cstrong data-start=\"4346\" data-end=\"4363\"\u003eDecoder Buddy\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 33.0859%; height: 19.5938px;\" data-start=\"4364\" data-end=\"4390\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"4366\" data-end=\"4388\"\u003eDecoder Buddy Mini\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"4447\" data-end=\"4863\"\u003e\n\u003ctr style=\"height: 19.5938px;\" data-start=\"4447\" data-end=\"4488\"\u003e\n\u003ctd style=\"width: 21.9559%; height: 19.5938px;\" data-start=\"4447\" data-end=\"4455\" data-col-size=\"sm\"\u003eScale\u003c\/td\u003e\n\u003ctd style=\"width: 41.0296%; height: 19.5938px;\" data-start=\"4455\" data-end=\"4460\" data-col-size=\"md\"\u003eHO\u003c\/td\u003e\n\u003ctd style=\"width: 33.0859%; height: 19.5938px;\" data-start=\"4460\" data-end=\"4488\" data-col-size=\"sm\"\u003eHO \/ Small HO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\" data-start=\"4489\" data-end=\"4533\"\u003e\n\u003ctd style=\"width: 21.9559%; height: 19.5938px;\" data-start=\"4489\" data-end=\"4496\" data-col-size=\"sm\"\u003eSize\u003c\/td\u003e\n\u003ctd style=\"width: 41.0296%; height: 19.5938px;\" data-start=\"4496\" data-end=\"4516\" data-col-size=\"md\"\u003eFull-length board\u003c\/td\u003e\n\u003ctd style=\"width: 33.0859%; height: 19.5938px;\" data-start=\"4516\" data-end=\"4533\" data-col-size=\"sm\"\u003eCompact board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\" data-start=\"4534\" data-end=\"4637\"\u003e\n\u003ctd style=\"width: 21.9559%; height: 39.1875px;\" data-start=\"4534\" data-end=\"4545\" data-col-size=\"sm\"\u003eBest For\u003c\/td\u003e\n\u003ctd style=\"width: 41.0296%; height: 39.1875px;\" data-start=\"4545\" data-end=\"4594\" data-col-size=\"md\"\u003eRoad locos, wide hoods, full lighting packages\u003c\/td\u003e\n\u003ctd style=\"width: 33.0859%; height: 39.1875px;\" data-start=\"4594\" data-end=\"4637\" data-col-size=\"sm\"\u003eSwitchers, cramped shells\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\" data-start=\"4638\" data-end=\"4676\"\u003e\n\u003ctd style=\"width: 21.9559%; height: 39.1875px;\" data-start=\"4638\" data-end=\"4663\" data-col-size=\"sm\"\u003eBuilt-In LED Resistors\u003c\/td\u003e\n\u003ctd style=\"width: 41.0296%; height: 39.1875px;\" data-start=\"4663\" data-end=\"4669\" data-col-size=\"md\"\u003eYes \/ Available Without\u003c\/td\u003e\n\u003ctd style=\"width: 33.0859%; height: 39.1875px;\" data-start=\"4669\" data-end=\"4676\" data-col-size=\"sm\"\u003eYes \/ Available Without\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\" data-start=\"4677\" data-end=\"4712\"\u003e\n\u003ctd style=\"width: 21.9559%; height: 19.5938px;\" data-start=\"4677\" data-end=\"4693\" data-col-size=\"sm\"\u003eDecoder Style\u003c\/td\u003e\n\u003ctd style=\"width: 41.0296%; height: 19.5938px;\" data-start=\"4693\" data-end=\"4702\" data-col-size=\"md\"\u003e21-Pin\u003c\/td\u003e\n\u003ctd style=\"width: 33.0859%; height: 19.5938px;\" data-start=\"4702\" data-end=\"4712\" data-col-size=\"sm\"\u003e21-Pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\" data-start=\"4713\" data-end=\"4757\"\u003e\n\u003ctd style=\"width: 21.9559%; height: 39.1875px;\" data-start=\"4713\" data-end=\"4736\" data-col-size=\"sm\"\u003eSpeaker\/KeepAlive\u003c\/td\u003e\n\u003ctd style=\"width: 41.0296%; height: 39.1875px;\" data-start=\"4736\" data-end=\"4745\" data-col-size=\"md\"\u003eYes, Solder Pads\u003c\/td\u003e\n\u003ctd style=\"width: 33.0859%; height: 39.1875px;\" data-start=\"4745\" data-end=\"4757\" data-col-size=\"sm\"\u003eYes, Solder Pads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\" data-start=\"4758\" data-end=\"4811\"\u003e\n\u003ctd style=\"width: 21.9559%; height: 19.5938px;\" data-start=\"4758\" data-end=\"4771\" data-col-size=\"sm\"\u003eDifficulty\u003c\/td\u003e\n\u003ctd style=\"width: 41.0296%; height: 19.5938px;\" data-start=\"4771\" data-end=\"4795\" data-col-size=\"md\"\u003eBeginner\/Intermediate\u003c\/td\u003e\n\u003ctd style=\"width: 33.0859%; height: 19.5938px;\" data-start=\"4795\" data-end=\"4811\" data-col-size=\"sm\"\u003eIntermediate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\" data-start=\"4812\" data-end=\"4863\"\u003e\n\u003ctd style=\"width: 21.9559%; height: 19.5938px;\" data-start=\"4812\" data-end=\"4831\" data-col-size=\"sm\"\u003eLighting Outputs\u003c\/td\u003e\n\u003ctd style=\"width: 41.0296%; height: 19.5938px;\" data-start=\"4831\" data-end=\"4838\" data-col-size=\"md\"\u003eMany\u003c\/td\u003e\n\u003ctd style=\"width: 33.0859%; height: 19.5938px;\" data-start=\"4838\" data-end=\"4863\" data-col-size=\"sm\"\u003eFewer, but sufficient\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp data-end=\"5825\" data-start=\"5696\"\u003e________________________________________________________________________________________________\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-end=\"6407\" data-start=\"6380\"\u003e\n\u003cp data-end=\"6407\" data-start=\"6382\"\u003eNixTrainz Decoder Buddy\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"6430\" data-start=\"6408\"\u003e\n\u003cp data-end=\"6430\" data-start=\"6410\"\u003eDecoder Buddy Mini\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"6452\" data-start=\"6431\"\u003e\n\u003cp data-end=\"6452\" data-start=\"6433\"\u003eDCC install board\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"6482\" data-start=\"6453\"\u003e\n\u003cp data-end=\"6482\" data-start=\"6455\"\u003eHO scale DCC wiring board\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"6517\" data-start=\"6483\"\u003e\n\u003cp data-end=\"6517\" data-start=\"6485\"\u003eLED model train lighting board\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"6551\" data-start=\"6518\"\u003e\n\u003cp data-end=\"6551\" data-start=\"6520\"\u003eESU LokSound compatible board\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"6585\" data-start=\"6552\"\u003e\n\u003cp data-end=\"6585\" data-start=\"6554\"\u003eDigitrax decoder installation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"6607\" data-start=\"6586\"\u003e\n\u003cp data-end=\"6607\" data-start=\"6588\"\u003eN scale DCC board\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"6638\" data-start=\"6608\"\u003e\n\u003cp data-end=\"6638\" data-start=\"6610\"\u003eModel railroad electronics\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"6662\" data-start=\"6639\"\u003e\n\u003cp data-end=\"6662\" data-start=\"6641\"\u003eDCC wiring platform\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"6684\" data-start=\"6663\"\u003e\n\u003cp data-end=\"6684\" data-start=\"6665\"\u003eDCC upgrade parts\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"6719\" data-start=\"6685\"\u003e\n\u003cp data-end=\"6719\" data-start=\"6687\"\u003eFusion Scale Hobbies NixTrainz\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","products":[{"product_id":"ntz2","title":"NixTrainz Decoder Buddy Mini 21 Pin Decoder Adapter Board 1K Ohm NTZ2","description":"\u003cp\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e0.65”  x  1.35”   x   0.35”\u003c\/p\u003e\n\u003cp\u003eThe Decoder Buddy Mini was developed to fit into smaller steam and diesel applications.  There has also been interest in HOn3 and S-Gauge applications.\u003c\/p\u003e\n\u003cp\u003eThis mother board does not include the 21 Pin Decoder.\u003c\/p\u003e\n\u003cp\u003eThis mother board requires soldering.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis printed circuit board is NOT INTENDED FOR USE IN A DC SYSTEM.  However, if the decoder you are using supports DC operation it should work.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Mini comes with three different sets of standard resistors 2.2K, 1K and “0” Ohm.  The dealers and distributors stock 1K versions unless otherwise stated.\u003c\/p\u003e\n\u003cp\u003eThe mother board includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOne 21 Pin Decoder receptacle\u003c\/li\u003e\n\u003cli\u003eTwo pairs of track input pads\u003c\/li\u003e\n\u003cli\u003eOne pair of motor output pads\u003c\/li\u003e\n\u003cli\u003eOne set of stay alive pads (U+, GND and if necessary, a third control wire) If using an ESU ‘Power Pack’ we recommend A10 as mentioned below.\u003c\/li\u003e\n\u003cli\u003eTwo logic outputs to control a Power Pack, smoke unit(s) or servo. The two logic output pads are 5 volt outputs with no resistors and controlled by A10 and A6 as labeled.\u003c\/li\u003e\n\u003cli\u003eOne pair of speaker pads\u003c\/li\u003e\n\u003cli\u003eThe correct headlight orientation is shown on the Mini.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eResistors for use with LED lighting. The “0” ohm resistors accommodate previously installed LEDs with resistors in line and “12-volt LEDs”.  It is IMPORTANT to realize that resistors must be used when LEDs are connected to the four lighting outputs of the “0” Ohm or the Tiny!!!  Resistors may be soldered in line when purchased or the included resistors may be soldered inline upon installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eResistors for use with incandescent bulb lighting. Remember there are different incandescent lamp voltage requirements and current draw that must be taken into consideration also.  A single or two separate bulbs may work but multiple bulbs can be problematic.  The “0” ohm resistors should provide the voltage and current necessary for incandescent bulbs.  A ½ watt resistor at the very least should be used to reduce the voltage to the bulb and heat is a major consideration in this installation.  I strongly recommend LEDs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eResistors included on the Mini are standard and 1K.  Values of the smd resistors appear in a white circle on the package for both standard smd resistor values.\u003c\/p\u003e","brand":"NixTrains","offers":[{"title":"Default Title","offer_id":42099571392768,"sku":"NTZ2","price":9.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/6453\/5552\/files\/IMG-4804.heic?v=1748911392"},{"product_id":"ntz-v5","title":"NixTrainz Decoder Buddy V5B 12 Output 21 Pin Decoder Adapter Board 2.2K Ohm Resistors","description":"\u003cp\u003eThe Decoder Buddy was developed for the 8 output decoders.\u003c\/p\u003e\n\u003cp\u003eThis mother board does not include the 21-Pin Decoder.\u003c\/p\u003e\n\u003cp\u003eThis mother board requires soldering.\u003c\/p\u003e\n\u003cp\u003eThis printed circuit board is NOT INTENDED FOR USE IN A DC SYSTEM.  However, if the decoder you are using supports DC operation it should work.\u003c\/p\u003e\n\u003cp\u003eThe Original Decoder Buddies come with standard 1K resistors onboard.  Some dealers also stock 2.2K original Decoder Buddys.  The resistor values are printed on the packaging header in white circles.\u003c\/p\u003e\n\u003cp\u003eThe mother board includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOne 21 Pin Decoder receptacle\u003c\/li\u003e\n\u003cli\u003eTwo pairs of track input pads\u003c\/li\u003e\n\u003cli\u003eOne pair of motor input pads\u003c\/li\u003e\n\u003cli\u003eOne set of stay alive pads, U+, GND.  (The white wire from a Power Pack can be soldered onto the Original Decoder Buddy fairly easily)\u003c\/li\u003e\n\u003cli\u003eTwo pairs of speaker pads in parallel by side\u003c\/li\u003e\n\u003cli\u003e8 lighting outputs on a separable “small connector board”\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eResistors for use with LED lighting. The “0” ohm resistors accommodate previously installed LEDs with resistors in line and “12-volt LEDs”.  It is IMPORTANT to realize that resistors must be used when LEDs are connected to the lighting outputs of the custom “0” Ohm boards!!!\u003c\/p\u003e","brand":"NixTrains","offers":[{"title":"Default Title","offer_id":42099571425536,"sku":"NTZ5","price":10.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/6453\/5552\/files\/NixTrains_Decoder_Buddy_V5_21_Pin_Decoder_Adapter_Board_2.2K_Ohm_Resistors.heic?v=1748911390"},{"product_id":"ntz4","title":"NixTrains Decoder Buddy 8 output (1.0K) 21 Pin Decoder Adapter Board NTZ4","description":"\u003cdiv class=\"woocommerce-tabs wc-tabs-wrapper\"\u003e\n\u003cdiv aria-labelledby=\"tab-title-description\" role=\"tabpanel\" id=\"tab-description\" class=\"woocommerce-Tabs-panel woocommerce-Tabs-panel--description panel entry-content wc-tab\"\u003e\n\u003cp\u003eThe V1B has 8 Aux outputs for lights.  Eight are present on the small connector board and two are paired to the motherboard and associated with the frame (Fx5 \u0026amp; Fx6).  The track and speaker pads stayed the same size.  The pads on the small connector board got a little smaller.  These pads are all separated and have holes to help hold the wires.  The stay alive pads moved to the other side of the motherboard out from under the decoder and are in an easy place to solder to like the original.  From a little closer to the situation than I used to be, I might say a Steam \/ Diesel split might align with the two Decoder Buddys as well as a 1997 date split between the two due to ditch light requirements by the FRA.  Both are exactly the same size.  You get to make the choice!  Fortunately both Decoder Buddys have been accepted by both installers and modelers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection class=\"related products\"\u003e\u003c\/section\u003e","brand":"NixTrains","offers":[{"title":"Default Title","offer_id":43727636398336,"sku":"NTZ4","price":10.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/6453\/5552\/files\/FullSizeRender_5066e3d7-061c-4589-b581-80422853dd7c.heic?v=1748910227"},{"product_id":"ntz7","title":"NixTrains Decoder Buddy Light Test Board NTZ7","description":"\u003cp class=\"ydp78c10a66MsoNormal\"\u003eWith the abundance of lighting functions and wanting to see and check them before I placed the shell on the frame, I decided I needed a way to see what was happening!  I went to work and prototyped a small connector board with LEDs so I could put the frame on the test track and test the motor, speaker and lighting functions before assembling the locomotive.  The Light Test Board is also a good diagnostic tool to see if the decoder and motherboard are behaving properly!\u003c\/p\u003e\n\u003cp class=\"ydp78c10a66MsoNormal\"\u003eThe Light Test Board works with the 8 output Original Decoder Buddy, and both the 12 output V5 and V5B.\u003c\/p\u003e","brand":"NixTrains","offers":[{"title":"Default Title","offer_id":43727642493184,"sku":"NTZ7","price":10.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/6453\/5552\/files\/FullSizeRender_305a9c76-36d1-4969-b1f8-52368a1a263d.heic?v=1748910225"},{"product_id":"ntz6","title":"NixTrains Decoder Buddy V5B 12 output (1.0K) NTZ6","description":"\u003cdiv class=\"woocommerce-tabs wc-tabs-wrapper\"\u003e\n\u003cdiv class=\"woocommerce-Tabs-panel woocommerce-Tabs-panel--description panel entry-content wc-tab\" id=\"tab-description\" role=\"tabpanel\" aria-labelledby=\"tab-title-description\"\u003e\n\u003cdiv class=\"woocommerce-tabs wc-tabs-wrapper\"\u003e\n\u003cdiv class=\"woocommerce-Tabs-panel woocommerce-Tabs-panel--description panel entry-content wc-tab\" id=\"tab-description\" role=\"tabpanel\" aria-labelledby=\"tab-title-description\"\u003e\n\u003cp\u003eThe V5B has 12 Aux outputs for lights.  Twelve are present on the small connector board and two are paired to the motherboard and associated with the frame.  The track and speaker pads stayed the same size.  The pads on the small connector board got a little smaller.  These pads are all separated and have holes to help hold the wires.  The stay alive pads moved to the other side of the motherboard out from under the decoder and are in an easy place to solder to like the original.  From a little closer to the situation than I used to be, I might say a Steam \/ Diesel split might align with the two Decoder Buddys as well as a 1997 date split between the two due to ditch light requirements by the FRA.  Both are exactly the same size.  You get to make the choice!  Fortunately both Decoder Buddys have been accepted by both installers and modelers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection class=\"related products\"\u003e\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection class=\"related products\"\u003e\u003c\/section\u003e","brand":"NixTrains","offers":[{"title":"Default Title","offer_id":46159018295552,"sku":"NTZ6","price":10.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/6453\/5552\/files\/FullSizeRender_2281c07c-3b5f-4d11-999c-8001487bb4a3.heic?v=1748908191"},{"product_id":"ntz3","title":"NixTrainz Decoder Buddy Mini 21 Pin Decoder Adapter Board No Resistors","description":"\u003cp\u003eThe Decoder Buddy Mini was developed to fit into smaller steam and diesel applications.  There has also been interest in HOn3 and S-Gauge applications.\u003c\/p\u003e\n\u003cp\u003eThis mother board does not include the 21 Pin Decoder.\u003c\/p\u003e\n\u003cp\u003eThis mother board requires soldering.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis printed circuit board is NOT INTENDED FOR USE IN A DC SYSTEM.  However, if the decoder you are using supports DC operation it should work.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Mini comes with  “0” Ohm zero resistors. \u003c\/p\u003e\n\u003cp\u003eThe mother board includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOne 21 Pin Decoder receptacle\u003c\/li\u003e\n\u003cli\u003eTwo pairs of track input pads\u003c\/li\u003e\n\u003cli\u003eOne pair of motor output pads\u003c\/li\u003e\n\u003cli\u003eOne set of stay alive pads (U+, GND and if necessary, a third control wire) If using an ESU ‘Power Pack’ we recommend A10 as mentioned below.\u003c\/li\u003e\n\u003cli\u003eTwo logic outputs to control a Power Pack, smoke unit(s) or servo. The two logic output pads are 5 volt outputs with no resistors and controlled by A10 and A6 as labeled.\u003c\/li\u003e\n\u003cli\u003eOne pair of speaker pads\u003c\/li\u003e\n\u003cli\u003eThe correct headlight orientation is shown on the Mini.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NixTrains","offers":[{"title":"Default Title","offer_id":46159040413952,"sku":"NTZ3","price":9.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/6453\/5552\/files\/FullSizeRender_a6ad6183-4537-4ec5-9421-a4ab79ee8074.heic?v=1748908190"},{"product_id":"ntz1","title":"NixTrains Decoder Buddy V1B 8 output (2.2K) NTZ1","description":"\u003cdiv class=\"woocommerce-tabs wc-tabs-wrapper\"\u003e\n\u003cdiv class=\"woocommerce-Tabs-panel woocommerce-Tabs-panel--description panel entry-content wc-tab\" id=\"tab-description\" role=\"tabpanel\" aria-labelledby=\"tab-title-description\"\u003e\n\u003cp\u003eThe V1B has 8 Aux outputs for lights.  Eight are present on the small connector board and two are paired to the motherboard and associated with the frame (Fx5 \u0026amp; Fx6).  The track and speaker pads stayed the same size.  The pads on the small connector board got a little smaller.  These pads are all separated and have holes to help hold the wires.  The stay alive pads moved to the other side of the motherboard out from under the decoder and are in an easy place to solder to like the original.  From a little closer to the situation than I used to be, I might say a Steam \/ Diesel split might align with the two Decoder Buddys as well as a 1997 date split between the two due to ditch light requirements by the FRA.  Both are exactly the same size.  You get to make the choice!  Fortunately both Decoder Buddys have been accepted by both installers and modelers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"NixTrains","offers":[{"title":"Default Title","offer_id":46159072362752,"sku":"NTZ1","price":10.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/6453\/5552\/files\/FullSizeRender_13136093-999d-4be6-8f02-827ce97ccfcf.heic?v=1748908189"},{"product_id":"ntz8","title":"NixTrainz Decoder Buddy Mini 2.2K Ohm Resistors NTZ8","description":"\u003cp\u003eThe Decoder Buddy Mini was developed to fit into smaller steam and diesel applications.  There has also been interest in HOn3 and S-Gauge applications.\u003c\/p\u003e\n\u003cp\u003eThis mother board does not include the 21 Pin Decoder.\u003c\/p\u003e\n\u003cp\u003eThis mother board requires soldering.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis printed circuit board is NOT INTENDED FOR USE IN A DC SYSTEM.  However, if the decoder you are using supports DC operation it should work.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Mini comes with  “2.2k” Ohm resistors. \u003c\/p\u003e\n\u003cp\u003eThe mother board includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOne 21 Pin Decoder receptacle\u003c\/li\u003e\n\u003cli\u003eTwo pairs of track input pads\u003c\/li\u003e\n\u003cli\u003eOne pair of motor output pads\u003c\/li\u003e\n\u003cli\u003eOne set of stay alive pads (U+, GND and if necessary, a third control wire) If using an ESU ‘Power Pack’ we recommend A10 as mentioned below.\u003c\/li\u003e\n\u003cli\u003eTwo logic outputs to control a Power Pack, smoke unit(s) or servo. The two logic output pads are 5 volt outputs with no resistors and controlled by A10 and A6 as labeled.\u003c\/li\u003e\n\u003cli\u003eOne pair of speaker pads\u003c\/li\u003e\n\u003cli\u003eThe correct headlight orientation is shown on the Mini.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NixTrains","offers":[{"title":"Default Title","offer_id":46159078621440,"sku":"NTZ8","price":9.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/6453\/5552\/files\/FullSizeRender_ecf8c200-5a04-4643-8f1d-166b98f7a9c7.heic?v=1748908187"},{"product_id":"ntz201","title":"NixTrainz Power Bridge I 3 Wire Stay Alive For ESU LokSound NTZ201","description":"\u003cp\u003eNixTrainz Item #: NTZ-201\u003c\/p\u003e\n\u003cp\u003e3-wire stay alive device compatible with ESU LokSound decoders.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eL:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e21mm\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eW\u003c\/strong\u003e: 10mm\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eH\u003c\/strong\u003e: 13.5mm\u003c\/p\u003e","brand":"NixTrains","offers":[{"title":"Default Title","offer_id":46420849000704,"sku":"NTZ201","price":27.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/6453\/5552\/files\/IMG_1641_cc56de21-de32-4ab6-9032-63a7aa4443b3.jpg?v=1748907805"},{"product_id":"ntz202","title":"NixTrainz Power Bridge II 3 Wire Stay Alive NTZ202","description":"\u003cp\u003eNixTrainz Item #: NTZ-202\u003c\/p\u003e\n\u003cp\u003e3-wire stay alive device compatible with ESU LokSound decoders.\u003c\/p\u003e","brand":"NixTrains","offers":[{"title":"Default Title","offer_id":46420857127168,"sku":"NTZ202","price":27.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/6453\/5552\/files\/IMG_1642.jpg?v=1748907804"},{"product_id":"ntz204","title":"NixTrainz Power Bridge III 2 Wire Stay Alive NTZ204","description":"\u003cp\u003eNixTrainz Item #: NTZ-204\u003c\/p\u003e\n\u003cp\u003e2-wire stay alive device compatible with Digitrax, TCS and other decoders.\u003c\/p\u003e","brand":"NixTrains","offers":[{"title":"Default Title","offer_id":46420873543936,"sku":"NTZ204","price":27.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/6453\/5552\/files\/IMG_1670.jpg?v=1748907803"},{"product_id":"ntz501","title":"NixTrainz SoundTraxx Conversion Kit for ScaleTrains Locomotives - NTZ501","description":"\u003cp data-start=\"348\" data-end=\"445\"\u003e\u003cstrong data-start=\"348\" data-end=\"445\"\u003eNixTrainz ScaleTrains Conversion Kit – Decoder Buddy V5B + Power Bridge III + Speaker Upgrade\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"447\" data-end=\"897\"\u003eUpgrade your ScaleTrains locomotive with confidence! The \u003cstrong data-start=\"504\" data-end=\"544\"\u003eNixTrainz ScaleTrains Conversion Kit\u003c\/strong\u003e is the ultimate plug-and-play solution for modelers who want smoother performance, reliable power retention, and modern decoder compatibility. Engineered specifically for popular ScaleTrains models, this kit gives you everything you need to install a 21-pin decoder, add stay-alive performance, and upgrade your sound system in one streamlined package.\u003c\/p\u003e\n\u003cp data-start=\"899\" data-end=\"1357\"\u003eDesigned for hobbyists who demand professional-grade results, the kit includes the \u003cstrong data-start=\"982\" data-end=\"1009\"\u003eDecoder Buddy V5B board\u003c\/strong\u003e, a \u003cstrong data-start=\"1013\" data-end=\"1064\"\u003ePower Bridge III with dual 1.0F supercapacitors\u003c\/strong\u003e, and a \u003cstrong data-start=\"1072\" data-end=\"1119\"\u003ehigh-efficiency Scale Sound Systems speaker\u003c\/strong\u003e — delivering cleaner wiring, stronger electrical distribution, and crystal-clear sound. Whether you're adding sound for the first time or completely modernizing your locomotive’s electronics, this kit dramatically simplifies the process.\u003c\/p\u003e\n\u003chr data-start=\"1359\" data-end=\"1362\"\u003e\n\u003ch2 data-start=\"1364\" data-end=\"1401\"\u003eCompatible ScaleTrains Models\u003c\/h2\u003e\n\u003cp data-start=\"1402\" data-end=\"1442\"\u003eDesigned for seamless installation in:\u003c\/p\u003e\n\u003cul data-start=\"1443\" data-end=\"1553\"\u003e\n\u003cli data-start=\"1443\" data-end=\"1453\"\u003e\n\u003cp data-start=\"1445\" data-end=\"1453\"\u003eGP38-2\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1454\" data-end=\"1462\"\u003e\n\u003cp data-start=\"1456\" data-end=\"1462\"\u003eGP40\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1463\" data-end=\"1473\"\u003e\n\u003cp data-start=\"1465\" data-end=\"1473\"\u003eSD40-2\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1474\" data-end=\"1482\"\u003e\n\u003cp data-start=\"1476\" data-end=\"1482\"\u003eSD45\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1483\" data-end=\"1495\"\u003e\n\u003cp data-start=\"1485\" data-end=\"1495\"\u003eGE B39-8\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1496\" data-end=\"1509\"\u003e\n\u003cp data-start=\"1498\" data-end=\"1509\"\u003eGE Dash-9\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1510\" data-end=\"1553\"\u003e\n\u003cp data-start=\"1512\" data-end=\"1553\"\u003eES44 \/ ET44 \/ C44 \/ GEVO \/ Tier 4 units\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1555\" data-end=\"1558\"\u003e\n\u003ch2 data-start=\"1560\" data-end=\"1583\"\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul data-start=\"1584\" data-end=\"1917\"\u003e\n\u003cli data-start=\"1584\" data-end=\"1672\"\u003e\n\u003cp data-start=\"1586\" data-end=\"1672\"\u003e\u003cstrong data-start=\"1586\" data-end=\"1624\"\u003eDecoder Buddy V5B (1.0K resistors)\u003c\/strong\u003e – Clean, organized wiring for 21-pin decoders\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1673\" data-end=\"1761\"\u003e\n\u003cp data-start=\"1675\" data-end=\"1761\"\u003e\u003cstrong data-start=\"1675\" data-end=\"1695\"\u003ePower Bridge III\u003c\/strong\u003e – Two 1.0F supercapacitors for unmatched stay-alive performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1762\" data-end=\"1858\"\u003e\n\u003cp data-start=\"1764\" data-end=\"1858\"\u003e\u003cstrong data-start=\"1764\" data-end=\"1825\"\u003eUniversal #1 Scale Sound Systems Speaker (with enclosure)\u003c\/strong\u003e – Clear, powerful sound output\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1859\" data-end=\"1917\"\u003e\n\u003cp data-start=\"1861\" data-end=\"1917\"\u003e\u003cstrong data-start=\"1861\" data-end=\"1882\"\u003eMounting adhesive\u003c\/strong\u003e – Easy installation, secure hold\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1919\" data-end=\"1978\"\u003e\u003cem data-start=\"1919\" data-end=\"1978\"\u003e(Decoder not included — works with most 21-pin decoders.)\u003c\/em\u003e\u003c\/p\u003e\n\u003chr data-start=\"1980\" data-end=\"1983\"\u003e\n\u003ch2 data-start=\"1985\" data-end=\"2005\"\u003eKey Benefits\u003c\/h2\u003e\n\u003cul data-start=\"2006\" data-end=\"2391\"\u003e\n\u003cli data-start=\"2006\" data-end=\"2075\"\u003e\n\u003cp data-start=\"2008\" data-end=\"2075\"\u003e\u003cstrong data-start=\"2008\" data-end=\"2031\"\u003eSimplifies installs\u003c\/strong\u003e in ScaleTrains locomotives — no guesswork\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2076\" data-end=\"2160\"\u003e\n\u003cp data-start=\"2078\" data-end=\"2160\"\u003e\u003cstrong data-start=\"2078\" data-end=\"2102\"\u003eImproves reliability\u003c\/strong\u003e with dual supercaps for smooth running over dirty track\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2161\" data-end=\"2240\"\u003e\n\u003cp data-start=\"2163\" data-end=\"2240\"\u003e\u003cstrong data-start=\"2163\" data-end=\"2206\"\u003eCleaner wiring \u0026amp; easier troubleshooting\u003c\/strong\u003e with the Decoder Buddy platform\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2241\" data-end=\"2311\"\u003e\n\u003cp data-start=\"2243\" data-end=\"2311\"\u003e\u003cstrong data-start=\"2243\" data-end=\"2267\"\u003eBoosts sound quality\u003c\/strong\u003e with a high-performance speaker enclosure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2312\" data-end=\"2391\"\u003e\n\u003cp data-start=\"2314\" data-end=\"2391\"\u003e\u003cstrong data-start=\"2314\" data-end=\"2355\"\u003eMaximizes lighting \u0026amp; function options\u003c\/strong\u003e via modern 21-pin decoder support\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2393\" data-end=\"2603\"\u003eThis is one of the \u003cem data-start=\"2412\" data-end=\"2441\"\u003emost powerful upgrade paths\u003c\/em\u003e for ScaleTrains diesel locomotives, allowing modelers to achieve professional sound, smooth operation, and fully customizable DCC functions with far less effort.\u003c\/p\u003e\n\u003chr data-start=\"2605\" data-end=\"2608\"\u003e\n\u003cp data-start=\"2638\" data-end=\"2914\"\u003eScaleTrains conversion kit, NixTrainz conversion kit, DCC upgrade kit ScaleTrains, Decoder Buddy V5B, Power Bridge III stay alive, Scale Sound Systems speaker, DCC 21-pin conversion, SoundTraxx 21-pin compatibility, ScaleTrains DCC electronics, model train decoder upgrade kit\u003c\/p\u003e","brand":"NixTrains","offers":[{"title":"Default Title","offer_id":47427550085376,"sku":"NTZ501","price":49.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/6453\/5552\/files\/conv-kit.png?v=1765225209"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/6453\/5552\/collections\/nixtrainz-collection-8462811.png?v=1764777885","url":"https:\/\/fusionscalehobbies.com\/collections\/nixtrainz-collection.oembed","provider":"Fusion Scale Hobbies","version":"1.0","type":"link"}