Bachmann n scale GP40...decoder

french_guy Apr 18, 2021

  1. french_guy

    french_guy TrainBoard Member

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    Hello all
    TCS has a very good tutorial on how to install one of their dcc decoders on a Bachmann GP40:
    https://tcsdcc.com/installation/n-scale/2093
    I have the exact same engine, and was wondering if another decoder could be easily installed as well, knowing which traces to cut from the tutorial
    For example an ESU Lokpilot micro V5 DCC #59820?
    Thanks
     
  2. RBrodzinsky

    RBrodzinsky November 18, 2022 Staff Member TrainBoard Supporter In Memoriam

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    yes, you can stick any of the ESU micro LokPilots in there, just make sure you note which wire goes to which pad (the TCS instructions don't identify the pads, but the decoder matches the standard 6-pin config)
     
  3. french_guy

    french_guy TrainBoard Member

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    So looking at the tutorial and the decoder's instruction, it seems as follow:
    tcs wiring.JPG
    tcs decoder.png
    bachmann board.png

    It seems to make sense for the top 3 pins since the board says "M+", "M-", "R"
    It' just more confusing for the 3 other pins though....!!!
     
    Last edited: Apr 18, 2021
  4. RBrodzinsky

    RBrodzinsky November 18, 2022 Staff Member TrainBoard Supporter In Memoriam

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    Yeah, using “L” gets confusing. The plain L is left track (black), and the others have the “-“ because they are the negatives for the lights. Most others put FL and RL, rather than L and BL (back)
     
  5. french_guy

    french_guy TrainBoard Member

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    So am I ok to assume "BL-" is yellow?
    And "L" is black, and "L-" is white?
     
  6. RBrodzinsky

    RBrodzinsky November 18, 2022 Staff Member TrainBoard Supporter In Memoriam

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  7. french_guy

    french_guy TrainBoard Member

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  8. Doug Gosha

    Doug Gosha TrainBoard Member

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    So, this isn't for the original Bachmann GP40 from around 1969 - '70, huh.

    :D

    Doug
     
    french_guy likes this.
  9. french_guy

    french_guy TrainBoard Member

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    No, it's for the latest one (not dcc) that has the light board installed on the top of the frame
     
  10. french_guy

    french_guy TrainBoard Member

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    By the way, I purchased the ESU Lokpilot Micro V5 dcc #59820 a few weeks ago, and it seems to have more cables than what I could see on the image of the website where I bought it......
    Is this normal? Or could it be a different model #?
    20210418_191020.jpg

    20210418_191039.jpg
     
  11. RBrodzinsky

    RBrodzinsky November 18, 2022 Staff Member TrainBoard Supporter In Memoriam

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    Totally normal. Green is Aux1, violet Aux2, pink Aux 3 and turquoise Aux 4 (doing from memory, and may have reversed the last two)
     
  12. french_guy

    french_guy TrainBoard Member

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    Well, I've finally equipped my Bachmann GP40 with a decoder, but not the ESU.....I used a Digitrax DZ126T
    It went well, and it worked right away. The TCS website was very helpfull
    20210707_175438.jpg 20210707_173511.jpg 20210707_183400.jpg 20210707_175521.jpg 20210707_184609.jpg
     
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