New harness install in 70 gs

Discussion in 'Sparky's corner' started by Tom454, Apr 26, 2024.

  1. Tom454

    Tom454 Active Member

    Maybe you guys can give me a little insight. I'm finishing up the install on my new 455 in 70 gs. The old harness was a complete mess that looked homemade. I bought a new engine harness from Todd Miller. My question is, I have an hei distributor. What needs to be done to make this work? Is there any other changes I will have to do to the wiring? Thank you in advance for any help. Photos would be a huge help if you have any. Thank you!
     
  2. jaye

    jaye Well-Known Member

    Disconnect the pink wire and install a regular length of wire the same size. The wire has to be pulled at the firewall connector. The end isn’t just a regular spade. You may have to take the one off the resistor wire. One of the vendors (I don’t remember which) sells a replacement wire with the correct spade. It was around $20 a few years ago. Did you mentioned that you were using an HEI, they do come with the resistor wire already replaced.
     
  3. Tom454

    Tom454 Active Member

    I don't think I mentioned it had hei distributor because I didn't see it as an option when ordering the harness. This is the harness I ordered. Screenshot_20240426_095431_Chrome.jpg
     
  4. 12lives

    12lives Control the controllable, let the rest go

    So this is controversial but I will mention it. The HEI uses more current. Run a new 12 or 10 GA wire to it from a relay connected to a 10 GA source or the battery, especially if you are looking for max performance. Activate it from a switched source. If you get run on, there is a fix. If you need a stock look hide it. You don't need the resistor wire or yellow wire.
     
  5. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

  6. Tom454

    Tom454 Active Member

    Thanks for everyone's suggestions. My buddy wired it using a 30 Amp relay. So far so good. Only put about 30 miles on it so far, but it runs strong
     
    12lives and Brett Slater like this.

Share This Page