I'm going to shoot you a diagram. I think it covers 1976 - 1978.
I colored this in myself using Microsoft Paint, it's much harder to follow in black and white.
Due to the diagrams not giving wire stripes/tracer colors, I "winged" it by "Dotting"/ "Dashing" those wires with the main color (given) You'll have to hands on the wires to determine what the stripes color really is.
I had no other way to denote those wires (the dotted ones) without digging into a 1978!
Not knowing your objectives with your Jeep,
I can also send info/ pics if you want to lose the really crappy Prestolite system and convert to the much better "Motorcaft" system (like I did for my '77) which came out in CJs in 1979.
Keep us posted.
The Medic
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Sunday, November 17th, 2019 AT 8:17 PM