mnkyboy Posted August 6, 2011 Share Posted August 6, 2011 I have a 2.5l and AX4 in a 1989 MJ and I want to swap in a 1990 4.0l and a 93ish AX15. I found a good deal on an 89 4.0l 5spd harness from a CC member but its from a 1989 XJ. What am I looking at as far as swapping it into the MJ, I figure it will need spliced into the MJ harness for the rear lights and fuel pump but is there anything else I may run into? I just want to make sure that I will be able to make it work before I get it. Link to comment Share on other sites More sharing options...
dave92cherokee Posted August 6, 2011 Share Posted August 6, 2011 viewtopic.php?f=9&t=19695 There's the writeup i used when attaching the 93xj harness to the 88mj harness in the manche. After it was done everything seemed to work fine. On the XJ harness there's also a good sized ground wire that runs to the back behind the drivers tail light. I used it to add an additional ground inside the cab since the ground behind taillights always seems to act up. Link to comment Share on other sites More sharing options...
mnkyboy Posted August 6, 2011 Author Share Posted August 6, 2011 Thanks,I was looking for something like that. Link to comment Share on other sites More sharing options...
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