4.0 swap wiring harness problems. I cut the wires from my fire wall and same with my doner jeep how do I wire a 94 harness up to the 86 comanche I got headlights and fount my starter wire just looking to get all dash lights and radio and to use the original key with out having a push button I'm new to the jeep side of the world. I got the motor in and made a trans mount just need wiring fixed if anybody can help pls let me know.

 

A bit late for this suggestion but typically when going for this swap - instead of cutting the wires you should remove the complete harness from the donor and install it in the MJ in its original placements.

This was the build thread for my 86 4.0 swap build from a while back
https://www.cherokeeforum.com/f46/19...e-path-167502/

How did you address the radiator support and crossmember?