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  • Wiring recomendations

    OK,
    So everything is on the way to my house now, and I am going to work on installing the fuel system tonight. Got 3/8 line and got a better price on a roll of it. So if I have enough I will just run the return with it as well.

    So my question was, if anyone had wiring recomendations for our Scouts for the TBI. Any good pickup points for power on when Key is on, as well as power on ONLY when vehicle is running, for the fuel pump.

    Thanks
    Mark

  • #2
    Do you have a copy of the ecm pinout from the gmecm site?
    If not get it.

    ftp://ftp.diy-efi.org/pub/gmecm/manuals/1227747/

    I use the ign 12v that went to the + coil to energize a relay for my power.
    If you look at the harness.

    red is bat
    org is fused bat
    pnk/blk is ign 12v
    blk/wht is gnd

    there are exceptions to this...
    aldl data is org.

    But if you stick with the factory colors and wiring it is pretty straight forward.
    Hint ...do 1 wire at a time when you shorten and reroute them.
    There is a data gry and a 5v ref gry.......

    The fuel pump is operated by the ecm. You just have to provide the 12v.
    Bill USN-1

    COMMITED TO TEACHING PEOPLE THE "PROPER" WAY TO EFI
    HAMILTON FUEL INJECTION
    May be the answer to all your fuel injection needs!
    Learn to do it right.

    Comment


    • #3
      Here's my electrical setup (I'll post some pics if I can find them)

      I have a Ford Solenoid mounted to the pass side of the factory firewall plugs. The alternator feeds directly to it. Then an aux fuse block connected to the bat post of the solenoid supplies feed power. I run a relay triggered by the factory ignition to supply power to the FI system, and Ignition. Clean, simple and I know my 12v source is good.

      Comment


      • #4


        Here is how I mounted mine.
        Used aux lighting 30 amp relays $5ea for power.

        [more pics go to efi]
        http://www.picturetrail.com/hamilton-1
        Bill USN-1

        COMMITED TO TEACHING PEOPLE THE "PROPER" WAY TO EFI
        HAMILTON FUEL INJECTION
        May be the answer to all your fuel injection needs!
        Learn to do it right.

        Comment

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