howeitsdone Posted July 3, 2021 Share Posted July 3, 2021 My '88 is not doing well today. Yesterday I removed the battery and cleaned up the engine bay. Lots of degreaser, scrubbing, and then water from the hose. Today, after about giving it 20 or so hours to dry, I go to start it and just a good ole' click. Starter is at the bottom and takes a bit of water anyway (plus I banged the starter and solenoid a bit with no result) so my initial go-to was the ignition relay. Thought maybe some water got in there and needs replacing. So I removed and inspected. Tried to clean up the terminals just in case and then I reinstalled. Well a wire was so dry it just came right off of a connector that goes to the hot stud. Now my ignition does nothing. No radio, etc... So thinking maybe that was the hot wire to the ignition module. Now, I'm finding a ton of wires with bare wire showing (a few strands already broken) and many that were pinched at some point and are pretty dry/cracking. Sure, I could go into each one and replace sections with new wire and some butt connectors. But I'm hoping there could be a solution to swap to a different harness from a similar year XJ that may be in decent shape. So many of these wires have already been repaired once or twice. I've also got 10+ connectors not connected to anything and have no idea what modifications may have been done. Or potentially if Chrysler just left connectors for components that would otherwise come on another model/trim. My 2012 GC is like that. TL:DR What harness will swap in plug-n-play to an '88 4.0 M/T? Link to comment Share on other sites More sharing options...
jdog Posted July 3, 2021 Share Posted July 3, 2021 Yes a cherokee harness will fit, if looks like someone attempted to replace a fusible link. Yes there are empty connectors in the engine bay Link to comment Share on other sites More sharing options...
howeitsdone Posted July 3, 2021 Author Share Posted July 3, 2021 Just now, jdog said: Yes a cherokee harness will fit, if looks like someone attempted to replace a fusible link. Yes there are empty connectors in the engine bay Must be 87-90, right? (RENIX) Link to comment Share on other sites More sharing options...
jdog Posted July 3, 2021 Share Posted July 3, 2021 Yep Link to comment Share on other sites More sharing options...
Eagle Posted July 3, 2021 Share Posted July 3, 2021 '89 or '90 harness would be better, because they don't have the C101 connector. Saves the trouble of bypassing it. Link to comment Share on other sites More sharing options...
howeitsdone Posted July 3, 2021 Author Share Posted July 3, 2021 Thank you both. I will try to source one from a yard. I'm not too worried about the C101 as I don't mind cleaning. But I can also solder, so there is the "one day". In trying to diagnose the ignition, does this diagram look right? I made it from what I think is happening. *Top is when the ignition is set to "ON" *Bottom is when turning the key over *Dotted lines are what's happening when ignition is turned in those places *Solid lines are constants Link to comment Share on other sites More sharing options...
jdog Posted July 3, 2021 Share Posted July 3, 2021 Id fix that fuse link first if you want it to start Link to comment Share on other sites More sharing options...
howeitsdone Posted July 3, 2021 Author Share Posted July 3, 2021 1 minute ago, jdog said: Id fix that fuse link first if you want it to start I'm sure that's part of the issue, but I'm curious if the diagram is accurate. I'm a visual learner so this helps me learn better. Link to comment Share on other sites More sharing options...
jdog Posted July 3, 2021 Share Posted July 3, 2021 yeah, in a condensed way Link to comment Share on other sites More sharing options...
howeitsdone Posted July 4, 2021 Author Share Posted July 4, 2021 Got it running today by re-attaching that wire. What is the inline fuse rated at? It currently doesn't have one. I'm sure that's important... Link to comment Share on other sites More sharing options...
cruiser54 Posted July 4, 2021 Share Posted July 4, 2021 Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now