Jaxso32 Posted December 9, 2015 Share Posted December 9, 2015 hi, just wondering if the 1988 4.0 wiring harness and a harness from a 86 4.0 would be the same. The previous owner hacked up the harnesses on my 88 and I'm getting tired trying to fix his mess, there is a 86 being parted out semi close to me and i would like to get the harnesses if i can use them thanks Link to comment Share on other sites More sharing options...
Strokermjcomanche Posted December 9, 2015 Share Posted December 9, 2015 No such thing as a 4.0 in 86 . Unless it's been swapped in , so no . Link to comment Share on other sites More sharing options...
cruiser54 Posted December 9, 2015 Share Posted December 9, 2015 Check the 10th digit in the donor vehicle's vIN. Should be H, J, K or L Link to comment Share on other sites More sharing options...
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