If it is possible to be more specific, I can look at an 88 diagram that I have.
What system are you troubleshooting? the starter circuit or the ignition circuit?
You might look at the post at the very top of this forum on the crank position sensor, which is by far the most common problem every Jeep mechanic will mention.
Otherwise, if you can describe your problem a little more, maybe some of our forum readers can point you in the right direction.
Downloads on such things as factory service manuals and diagrams are hard to find on the net now (use to be there) because Daimler-Chysler has cracked down due to copyright violation.
You can buy them on CD from them (DC) though:
https://techauthority.gltghosting.co...atalogId=10051