Source of wiring Harness

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Shrek
Posts: 9
Joined: December 12th, 2018, 8:43 am
Vehicle Year: 1989
Vehicle Make: Jeep
Vehicle Model: Wrangler

Source of wiring Harness

Post by Shrek »

Looking to do a 4.0 head swap on my 89 4.2.
What vehicles can I source the engine wiring harness from?
Does it matter between auto or manual transmission. I have a manual.

What about the fuse box?
Sailboy42
Making Progress
Making Progress
Posts: 57
Joined: July 31st, 2020, 2:45 pm
Vehicle Year: 1990
Vehicle Make: Jeep
Vehicle Model: YJ

Re: Source of wiring Harness

Post by Sailboy42 »

Changing the head should not require changing the wiring harness. The ECM should be able to adjust itself.
If you must get a new harness DeadJeep sells them used and painless performance sells new.
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