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  1. #1

    Default Wiring Harness Question

    It's a pretty obvious question, I plan on putting a 89 5.0 into my 84 and im wondering if the difference in headlight will mean that the harness won't fit for the 4 eyed headlights

  2. #2


    I don't know if it matters but it 84 mustang

  3. #3
    Moderator wraithracing's Avatar
    Join Date
    Jun 2010
    Grand Junction, CO/RR TX


    You can modify the front wiring harness to work for the 84 front end, but yes the harness is very different. The side markers are different, the front turn signals are next to the headlights instead of the bumper and obviously 2 head lights instead of 4. Converting the front headlights to relays and using either LED bulbs or Halogen bulbs will make the conversion easier IMHO. Good luck!

    "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:
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