4.0 ho swap wiring question

tommy54

New member
Hi,
I'm tearing apart a donor 91 xj for the 4.0 ho and drivetrain. It's going into a 95 yj. I've read on a bunch of sites that I need the entire wiring harness from the xj. This is not easy since the harness goes into the firewall in multiple places. I assume most of these wires are for things other than the engine. What part of the harness do I actually need? I'd like to finish stripping the donor jeep to get it out of my way.
Thanks for any input.
 
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