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Old 10-09-2017, 02:10 PM   #1
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Right Rear Brake/Turn Signal Lights Quit Working

We are flat towing a 2016 Jeep Cherokee. All has been fine the last 12 months since the initial install. Yesterday the right rear brake/turn signal lights quit working. The tail lights are ok. I took the rear light cover off and the connections seemed ok. Any suggestions?
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Old 10-09-2017, 02:26 PM   #2
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Is this a single bulb for signal brakes ?

Did you try another bulb ?

Who did the install ?
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Old 10-09-2017, 02:36 PM   #3
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Right Rear Brake/Turn Signal Lights Quit Working

Had a similar problem on an older Suburban. Pull the offending bulb, clean up the contacts with some electrical contact cleaner, apply some new dielectric grease to the socket and reinsert the bulb.
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Old 10-09-2017, 02:44 PM   #4
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A year ago Camping World installed a Roadmaster wiring kit with diodes which use the existing bulbs. The turn signal and brake lights work fine when activated within the Jeep.
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Old 10-09-2017, 02:53 PM   #5
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Wiring connections at the diodes would be the place to look , I've had to re-do my diode connections , I should have soldered them in the first place ; crimp connectors will loosen over time.
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Old 10-09-2017, 03:54 PM   #6
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I have to agree with drdarin, take the bulb out and check the connections, clean them up and reinstall the bulb. Also you can test the connection before it hits the socket, if there is power, you socet and or bulb are bad. I did this and found the socet bad, I bought on one ebay for five bucks.
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Old 10-11-2017, 05:35 PM   #7
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Desertboyz,
Well, based on your last post on this, you say that if you use the turn signal/brake while driving your Cherokee, they work, correct? If that's the case, your bulb and, the wiring to it, most likely are just fine. There's a couple of items to investigate here. And these tests don't take long and or, are not complicated.

First, I'd verify that you are ACTUALLY receiving a RIGHT TURN/BRAKE signal from the coach, into and out of, the trailer plug on the back of your coach. That way, you KNOW that the coach side of things is PERFECT. Then, in rare occasions, the pins inside the 7-way plug can lose contact with the connector on the toad side. It doesn't happen very often but, it does happen.

Once you've made sure that the signals are all present at that plug on the back of your coach, you now need to now make sure they all are going through your pig tail. That means doing the same test at the pins in the end of your pig tail BEFORE it plugs into your Cherokee. If all the signals are there, you've cleared that pig tail. Now, it's a matter of chasing down where the problem is in your cherokee.

I'd probe check the wiring from the coach, as it actually enters the diode in your Cherokee to verify that the signal is getting all the way back to that point. At least you can start somewhere now. Keep us informed of your remedy here.
Scott
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