dbish92 Posted December 31, 2014 Share Posted December 31, 2014 Hi everyone I'm fairly new to jeeps in general and new to the site. I bought an 86 MJ 2.5L and for some reason when I tap the brakes the running lights come on in the front as well as the stereo. Also when I flip the left turn signal the front light comes on as well as the passenger rear. Hazards are working though. The signals only work if my head lights are on. The fuse box was corroded so I cleaned that out and replaced all the fuses and bulbs. Any input helps thanks! Link to comment Share on other sites More sharing options...
87MJTIM Posted January 1, 2015 Share Posted January 1, 2015 Did the PO wire in a trailer harness? Sounds like a wiring issue? Link to comment Share on other sites More sharing options...
gogmorgo Posted January 1, 2015 Share Posted January 1, 2015 Did you replace the bulbs with what was installed, or with what they should be? http://comancheclub.com/topic/41500-mj-replacement-light-bulb-list/ Link to comment Share on other sites More sharing options...
dbish92 Posted January 1, 2015 Author Share Posted January 1, 2015 sorry not sure what you mean by PO wire in the trailer harness. and all the bulbs are correct as well I looked behind the fuse box and there is a lot of corrosion as well wondering if that may be an issue? also i've found a few splices wrapped in duct tape which is obviously very wrong. I'm kind of at a point where I'm not sure where to start Link to comment Share on other sites More sharing options...
87MJTIM Posted January 1, 2015 Share Posted January 1, 2015 Prior Owner Did he install a trailer wiring harness? This is common problem for taillight issues Link to comment Share on other sites More sharing options...
dbish92 Posted January 1, 2015 Author Share Posted January 1, 2015 no theres no trailer harness Link to comment Share on other sites More sharing options...
G.I. Jomanche Posted January 2, 2015 Share Posted January 2, 2015 Have an 86 with similar issues except for me it was when I would use the e-brake the headlights popped the fuse, turn signals were intermittently working when they wanted to and after addressing the previous post with trailer connection which was hacked I still had problems. After checking behind the e-brake on that fuse block I had all kinds of corrosion from a leaking windshield seal at the dash. Pull that S.O.B. disconnect the battery, spray dialectric cleaner and air nozzle to dry. Rinse and repeat lol. Test that first then check turn signal cam under the steering wheel and headlight switch. Link to comment Share on other sites More sharing options...
G.I. Jomanche Posted January 2, 2015 Share Posted January 2, 2015 Oh btw my chiltons book was a birdnest of diagrams check another jeepers wiring for reference or other reliable source. Solder, heat shrink and good luck buddy. Link to comment Share on other sites More sharing options...
dbish92 Posted January 3, 2015 Author Share Posted January 3, 2015 Right on thanks Link to comment Share on other sites More sharing options...
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