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Thread: 98 LS1 Swap to 91 C1500 5speed

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  1. #1
    Thanks for the Reply John. And I am getting a standalone for the ls, but my question is how do i Remove the old harness from the firewall...I can't find a way to get it out of the passengers side...thanks again.

  2. #2
    Join Date
    Sep 2011
    Posts
    264
    I left my stock harness in place on my 94.. I clipped the plugs and taped up the wires off that I was not going to use and tucked them into the wire loom on the original harness.. then I mounted my nelson harness and PCM under the hood, I only ran 3-4 wires off the new harness into the cab.......

  3. #3
    Join Date
    Sep 2012
    Location
    Quakertown, Pa.
    Posts
    363
    Good question. I never removed mine since I used some of the wires to power up the modified harness. I would have to think there was a bolt or something in the center of the plug that pulls the mated half of the plug on the inside of the firewall to itself.
    '93 Chevy 1500 4X4 ECLB with a '99 Silverado LQ4 6.0 and '99 Escalade 4L60E. SOLD IT!!

    New toy: 2001 2500 HD 4X4 Extended Cab Long Bed


    John

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