Wounded_Fighter Posted June 11, 2020 Share Posted June 11, 2020 What year harnesses are the same to the 88 for engine bay. Mj/xj 87-89? Is there any major difference Link to comment Share on other sites More sharing options...
Green Mesa XJ Posted June 11, 2020 Share Posted June 11, 2020 What year harnesses are the same to the 88 for engine bay. Mj/xj 87-89? Is there any major difference As I understand it the 89-90 have eliminated a problematic plug, 87-88 should be the same.However the bulk head at the fire wall where it connects to your dash harness should be the same 86-90 so you could use 89-90 harness. Of course 86 is 2.8v6 not 4.0, not sure what changes were in the renix 2.5.I used a 1986 2.8 engine harness with a 1988 dash harness, that’s how I came across the differences in the bulk head to dash: on the 84-85 xj It is a older Jeep design bulkhead plug, 86-90 is renix era, 91-94 is the Chrysler HO era , 95 might be the same as 94 in most respects, 96 is different , 97-01 is obd ii eraSent from my iPhone using Tapatalk Pro Link to comment Share on other sites More sharing options...
cruiser54 Posted June 11, 2020 Share Posted June 11, 2020 87 to 88 least differences. Link to comment Share on other sites More sharing options...
boxyjeep Posted June 11, 2020 Share Posted June 11, 2020 What's wrong with your current harness? A lot of times it's easier to repair. Link to comment Share on other sites More sharing options...
Wounded_Fighter Posted June 11, 2020 Author Share Posted June 11, 2020 50 minutes ago, Chargum85 said: What's wrong with your current harness? A lot of times it's easier to repair. Nothing is wrong with my current one, but if I can get my hands on a match I have an experiment I want to try. I always wanted to try out shortening the amount of wires in the bay. My idea is to move all the relays over to the corner next to the airbox. I think it would make the engine bay "cleaner" without the number of wire looms that run across the firewall and in front of the header panel as well. I'm aware of a few that need to stay over on that side but it should make a lot less wire mess. It would be even more beneficial with the battery relocate mod Link to comment Share on other sites More sharing options...
cruiser54 Posted June 11, 2020 Share Posted June 11, 2020 well, get an 87 or 88 harness and get to work. Link to comment Share on other sites More sharing options...
boxyjeep Posted June 11, 2020 Share Posted June 11, 2020 1 hour ago, Wounded_Fighter said: Nothing is wrong with my current one, but if I can get my hands on a match I have an experiment I want to try. I always wanted to try out shortening the amount of wires in the bay. My idea is to move all the relays over to the corner next to the airbox. I think it would make the engine bay "cleaner" without the number of wire looms that run across the firewall and in front of the header panel as well. I'm aware of a few that need to stay over on that side but it should make a lot less wire mess. It would be even more beneficial with the battery relocate mod Hey! That's the same thing I'm doing. Except no extra harness. I'll try to attach some pics. I used a PDC/relay box from a Grand Cherokee. Link to comment Share on other sites More sharing options...
Wounded_Fighter Posted June 11, 2020 Author Share Posted June 11, 2020 45 minutes ago, cruiser54 said: well, get an 87 or 88 harness and get to work. Been trying to the last week so far. Just checking for "fit" Link to comment Share on other sites More sharing options...
boxyjeep Posted June 11, 2020 Share Posted June 11, 2020 Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Wounded_Fighter Posted June 11, 2020 Author Share Posted June 11, 2020 Just now, Chargum85 said: Hey! That's the same thing I'm doing. Except no extra harness. I'll try to attach some pics. I used a PDC/relay box from a Grand Cherokee. Yeeesss pics! I'm using an amazon relay box Link to comment Share on other sites More sharing options...
boxyjeep Posted June 11, 2020 Share Posted June 11, 2020 1 minute ago, Wounded_Fighter said: Yeeesss pics! I'm using an amazon relay box See above Link to comment Share on other sites More sharing options...
boxyjeep Posted July 14, 2020 Share Posted July 14, 2020 All done and working properly. Still pending wiring loom. Link to comment Share on other sites More sharing options...
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