buddy208 Posted September 15, 2009 Share Posted September 15, 2009 i did a 94 wiring swap and now my tail lights have both blinkers go off when you have one on and the brakes on. does anyone know how to fix this. Link to comment Share on other sites More sharing options...
Eagle Posted September 15, 2009 Share Posted September 15, 2009 '94 wiring swap from what? A '94 Cherokee? How much did you swap that affects the taillights? Remember, the Cherokee had separate, amber lights for the turn signals, and separate red lights for the brakes and taillights. On the MJ, the same bulbs perform all three functions, using only two filaments. You can't directly plug in Cherokee wiring and expect the MJ tail/brake lights to function correctly. We need a better description of what you did. Link to comment Share on other sites More sharing options...
buddy208 Posted September 15, 2009 Author Share Posted September 15, 2009 i replace all the engine wiring and the dash wiring but kept the mj tail lights wiring is there a way to fix it without changing the mj taillight wiring Link to comment Share on other sites More sharing options...
Eagle Posted September 15, 2009 Share Posted September 15, 2009 I know there's a way with a Renix-era XJ harness, because the XJ Wagoneers didn't use amber turns. I don't know how different the taillight wiring is for a '94 compared to, say, an '89. I'd suggest you get your hands on the wiring diagrams for an early XJ Wagoneer, your year MJ, and a '94 XJ and start comparing the brake and turn circuits, starting from the front and working back. Link to comment Share on other sites More sharing options...
jbhill Posted September 15, 2009 Share Posted September 15, 2009 easy solution, go to the parts store and get one of those 3 bulb to 2 bulb convertors for trailer lights. Link to comment Share on other sites More sharing options...
buddy208 Posted September 18, 2009 Author Share Posted September 18, 2009 couldnt i just use a diode Link to comment Share on other sites More sharing options...
buddy208 Posted September 20, 2009 Author Share Posted September 20, 2009 I'm still having problems with the lights and i tried those diodes Link to comment Share on other sites More sharing options...
buddy208 Posted September 20, 2009 Author Share Posted September 20, 2009 easy solution, go to the parts store and get one of those 3 bulb to 2 bulb convertors for trailer lights. what parts store advance auto parts doesnt have it and tractor supply doesnt have online but i don't know if they have it in stores Link to comment Share on other sites More sharing options...
mvusse Posted September 20, 2009 Share Posted September 20, 2009 Those conversion kits probably also use diodes. That's the easiest way to do it without creating a short. The only other way is to create a logic circuit. Link to comment Share on other sites More sharing options...
mvusse Posted September 20, 2009 Share Posted September 20, 2009 But it is also possible your issues come not from the above mentioned problem, but rather a bad or missing ground. Link to comment Share on other sites More sharing options...
buddy208 Posted September 20, 2009 Author Share Posted September 20, 2009 well before we did all the swap i made sure that all the lights on it worked. Link to comment Share on other sites More sharing options...
mopwrd340 Posted September 20, 2009 Share Posted September 20, 2009 the mj brakelights run through the turn signal switch as to where the xj dosent you will have to find the wire and tap it into the switch if you get a mj wiring diagram it will probaly show it both switches should be the same Link to comment Share on other sites More sharing options...
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