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Thread: how to make an LLY bench harness?

  1. #31
    Lifetime Member Cougar281's Avatar
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    Here's mine as it is now. I can read/flash 97+ LS1, E40 LS2, LB7, LLY, P12, 5 speed and 6 speed Allison. I plan to add a connector for T42 and one or both of the other LS2 ECMs. Battery is a 7.2Ah sealed battery, which is in the larger box on the bottom. There is a jack on the side of the smaller box to connect a maintainer up to keep the battery fully charged.



    Last edited by Cougar281; February 17th, 2009 at 05:00 AM.

  2. #32
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    Cougar

    Where did you get the battery? I like your set-up. Small and compact.

  3. #33
    Lifetime Member Cougar281's Avatar
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    I got the battery and maintainer from Batteries Plus. It's this one.

    The nice thing is I can toss it in my bag and take it into U-Pull-It yards and check to see if a prospective ECM powers up and gives data.

  4. #34
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    I dont suppose you have enough parts to make another one of those? I would buy a setup like that if you did. Let me know.
    voodoolord@msn.com

  5. #35
    Lifetime Member GMPX's Avatar
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    That is very nice, great idea on the battery too.

    Cheers,
    Ross
    I no longer monitor the forum, please either post your question or create a support ticket.

  6. #36
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    I guess I don't get the point of all of this. Could someone explain this to the dum..... LOL dumb. I know the what and the how, but I'm not sure of the why.

  7. #37
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    I would think for R/D and selling tuned ecm's

  8. #38
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    I thought we could lock the ECM.

  9. #39
    Lifetime Member GMC-2002-Dmax's Avatar
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    Quote Originally Posted by duramaximizer
    I thought we could lock the ECM.
    We can,

    The bench harness allows you to flash or read an ecm that is not in a vehicle.

    Commercial tuners like myself use the bench narness to flash the ecms's prior to shipping them.

    Tony
    www.mscservices.net


    Tuner of many, many Duramax and Cummins Diesels.


  10. #40
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    What is the GM part number for the pins / terminal ends used in the LLY harness connector? Guy gave me a part number of 15356826 but my parts man can not find it. The LBZ numbers I have all reference a bin number. I was told that these were the same as what is used for the DSP 5. Thanks!

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