1990 f350 engine bay wire harness

Discussion in '1987 - 1991 Ford F150, F250 and F350 Truck Forum' started by Smitty76, May 16, 2022.

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  1. Smitty76

    Is the harness the same on a manual truck as an automatic transmission truck.
     
    Smitty76, May 16, 2022
    #1
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  2. captchas

    im some cases NO! there are several more wires going to items such as the neutral safety switch and others, NOT saying you can't adapt one to the other just they are different at the factory when installed
     
    captchas, May 17, 2022
    #2

  3. Smitty76

    I think its takg pics of harness to match a comparible one up. Thx
     
    Smitty76, May 17, 2022
    #3

  4. Smitty76

    Will a 1990 f350 5.8l automatic transmission engine bay harness work in a 1990 f350 5.8l manual truck.
     
    Smitty76, May 23, 2022
    #4

  5. FTZ HAIC Staff Member Oregon Chapter Founding Member

    Its going to be compatible except for the transmission harness and you'll need to adapt the neutral safety & clutch harness. Either that, or wiring in a relay to trigger the starter manually.
     
    FTZ HAIC, May 23, 2022
    #5
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