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Thread: 1990 C1500 stock ECU, can it be removed when going with a stand alone harness?

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  1. 06-23-2015 10:38 PM #1
    Big-Sexy907
    Big-Sexy907 is offline Member
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    Quote Originally Posted by Chevy-Art View Post
    Some of the cluster wires and harness for the old ecm go through there.
    From what it looks like the VSS wire and the fuel pump relay are the only two wires needed through that bulkhead, there is also a larger (10 ga) power wire that goes through there as well for the dash power I think. Anyone know of any other wires that go through there?

    Better yet, anyone have a diagram that shows the wiring of the dash, and it's colors?
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  2. 06-24-2015 12:48 AM #2
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    GreyChevy
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    Diagram would help me out as well
    Ethan

    First & only 4th gen Ram 4x4 in the 12's NA 12.747 @ 104.07 (1.663 60')
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