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Thread: Ecm pin size

  1. #1
    Advanced Tuner
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    Ecm pin size

    looking to build a flex fuel harness. What size pins do we need to pin the ecm? I know it's a square head shape

    Common GM size E38 E92 type ecms

    I found 12-14 gauge, 16-18 and 20-22. If I had to guess I would think 16-18

  2. #2

  3. #3
    Tuning Addict
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    Honestly, the easy way is buy a junk harness or connector cores, harvest the pins to be used in other projects.

    https://www.ebay.com/itm/264706722819

  4. #4
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    Lol, that's exactly what I did. I had an old harness laying around and it was sacrificed.....I then found a set of pins I had laying around 5 minutes later

  5. #5
    Tuner in Training
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    Quote Originally Posted by JASON11WS6 View Post
    Lol, that's exactly what I did. I had an old harness laying around and it was sacrificed.....I then found a set of pins I had laying around 5 minutes later
    Hi, what is the part nr for the connecting terminal or if anyone has a pic.?

    The link to ebay doesn't work.

  6. #6
    Senior Tuner TheMechanic's Avatar
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    https://www.mouser.com/ProductDetail...oi%2FjMQ%3D%3D

    I believe I still have my roll at home. How many do you need?
    Last edited by TheMechanic; 05-04-2023 at 10:08 AM.

  7. #7
    Potential Tuner
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    Quote Originally Posted by TheMechanic View Post
    https://www.mouser.com/ProductDetail...oi%2FjMQ%3D%3D

    I believe I still have my roll at home. How many do you need?
    Are you sure these are the correct dimensions?
    Here's a screenshot from a video tutorial; they're not the same.
    Capture.JPG

  8. #8
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    E38, E40, E67, E92, T42 all have the same round terminals for all locations except the big main ground on the ECMs.

    T42:
    20200625_233330-.jpg
    Quote Originally Posted by SiriusC1024 View Post
    I think they're junkyard rebuilds.