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Wiring Problem

Discussion in 'The Garage' started by ffmcoop950, Jan 1, 2007.

  1. ffmcoop950

    ffmcoop950 Newbie

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    Is the wiring harness from a 1990 GMC Jimmy (fullsize) the same as a 1988 K5? I wanna swap em' but don't know if they're the same.
    Thanks,
    Mike
     
  2. dyeager535

    dyeager535 1 ton status Premium Member

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    Might be different, at least for the oil pressure switch/sender, but that's about it that I can think of.

    Then again, 1990 will be VSS, so there will be some added wiring for that, although I suspect the ECM wiring etc stayed the same short of the addition where necessary of additional wires. Which means the cluster wiring is wrong as well. :(
     
  3. 73k5blazer

    73k5blazer Unplug the matrix cable from the back of your head Premium Member

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    90 and 91 instroduced alot of changes (idiotically, as Dremu says, "GM is silly" let's change the whole wiring setup for a vehicle we're about to discontinue!).

    ABS, elec. Speedo, seat belt sensors, Cruise, stereo, glove box light, among other things.
    Could you make it work, sure, is it the same, not by a long shot.
     

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