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  1. #1
    FEP Supporter NAVYCAT's Avatar
    Join Date
    Jul 2004
    Montebello, CA

    Default Urgent harness question

    I have a 86 capri but the engine harness was hacked out, (its will have the stock 5.0/5 speed) but i just found a 5.0 5 speed in the junkyard but its a 88.
    can i use a 88 wire harness for the 86? will all the connectors match up? need to act fast before someone else gets it.....
    2017 Mustang ECO BOOST (DD)
    1986 Capri 5.0 Silver/Red
    1969 Falcon XW GTHO coupe
    U.S. NAVY 1980-2009
    Past 4 eyes-
    4th. 1981 Capri "White" Black Magic I6
    3rd. 1984 Capri RS V8 Black/grey
    2nd. 1984 Capri RS V8 White/red
    1st. 1984 SVO Grey/grey (traded it for a worn out 1970 BOSS 302)
    Both '84 Capri's vin# were 10 away from each other

  2. #2
    Moderator wraithracing's Avatar
    Join Date
    Jun 2010
    Grand Junction, CO/RR TX


    I know the dash harness of the 1986 SEFI harness in the Mustang/Capri is unique to that year model. I believe the engine harness is unique, but more similar to the Aero cars than the dash. You can probably make a different year model work, but some of the connectors may be different, but I am not 100% on that one. Hopefully someone has better information.

    "I Don't build it hoping for your approval! I built it because it meets mine!"

    "I've spent most of my money on Mustangs, racing, and women... the rest I just wasted."

    Mustangs Past: Too many to remember!
    Current Mustangs:
    1969 Mach 1
    1979 Pace Car now 5.0/5 speed
    1982 GT Ongoing RestoModification
    1984 SVO Awaiting Restoration
    1986 GT Wrecked by PO, but still want to save!

    Current Capris:
    1981 Capri Roller
    1981 Capri Black Magic Roller Basket Case
    1982 Capri RS 5.0/4spd T-top Full Restoration Underway
    1984 Capri RS T-top Roller
    1983-84 Gloy Racing Trans Am/IMSA Body Parts

  3. #3
    FEP Senior Member dagenham's Avatar
    Join Date
    Jul 2016
    Duncannon PA


    I can almost guarantee the harness will not be a direct bolt in. But if you are going to put all the 88 f.i. Stuff on the engine then youll need it.

  4. #4


    Get it! there is nothing that can't be done with an appropriate wire diagram. Stuff is getting harder to come by. I spiced a 94 harness into my 79. If concours show car isnt on your priority, it will be fine. Yes you may be short a plug here and there, but that too can be worked through. My .02, yours or others may vary

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