jeeptec1 Posted April 2, 2017 Share Posted April 2, 2017 I just bought an 89 MJ 4.0 2wd 5 speed. Looks like the dash harness caught on fire by the radio.One of the previous owners started a repair or butchery. The harness has been cut in 1/2. There is another harness that they started to install at the bulkhead. I unplugged it to try to determine what I'm up against. Looks like the replacement harnesses has about 5 or 6 different electrical plugs that are completely different. I saw a post about a week and half ago stating use a XJ harness and just add a wire for the brake lights. Now I'm back from a weeks vacation I can't find any writes now. Ugh. Sent from my iPad using Tapatalk Link to comment Share on other sites More sharing options...
Green Mesa XJ Posted April 2, 2017 Share Posted April 2, 2017 What year dash harness did you buy? You can have plugs for transmission control and power seats and windows, and defrost, that were in the donor vehicle. Sent from my iPhone using Tapatalk Pro Link to comment Share on other sites More sharing options...
jeeptec1 Posted April 2, 2017 Author Share Posted April 2, 2017 I have no idea. It was in the truck when I bought it. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Green Mesa XJ Posted April 3, 2017 Share Posted April 3, 2017 Is the new Included with the MJ dash harness complete? The bolt on the engine harness pull the bulkhead plugs together. I'd post a picture on the new complete harness plug to make sure it's for the right year / renix harness. Most of the rest of the dash plug will match up through out the years 1984-94. Just got to make sure the new harness is right for your year, or exactly matches the bulkhead plug on the old harness. I don't think being xj or mj harness will screw you up as long as it plugs into body harness. Sent from my iPhone using Tapatalk Pro Link to comment Share on other sites More sharing options...
jeeptec1 Posted April 4, 2017 Author Share Posted April 4, 2017 Ok the figured out the replacement harness that came in the truck. 90 XJ . Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Green Mesa XJ Posted April 4, 2017 Share Posted April 4, 2017 As long as it matches the bulkhead plug for the engine and body harness you should be fine. You might find a few plugs that don't belong to your option MJ. 1990 is the last renix year so I think it'll work but maybe a renix expert can make the final call . Sent from my iPhone using Tapatalk Pro Link to comment Share on other sites More sharing options...
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