brake lights

[buddy208]

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.

[Eagle]

'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.

[buddy208]

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

[Eagle]

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.

[jbhill]

easy solution, go to the parts store and get one of those 3 bulb to 2 bulb convertors for trailer lights.

[buddy208]

couldnt i just use a diode

[buddy208]

I'm still having problems with the lights and i tried those diodes

[buddy208]

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

[mvusse]

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.

[mvusse]

But it is also possible your issues come not from the above mentioned problem, but rather a bad or missing ground.

[buddy208]

well before we did all the swap i made sure that all the lights on it worked.

[mopwrd340]

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