How can I get my trailer lights to work?

50

Asked by Aug 03, 2014 at 09:00 PM about the 2001 Dodge Ram 1500 4 Dr SLT 4WD Quad Cab SB

Question type: Maintenance & Repair

I know I'm getting power, all 4 lights blink, the truck and the trailer, when a turn signal is put on. The running lights come on when the lights are turned on but all trailer lights go out when the brakes are applied.  What is wrong?

12 Answers

117,865

Is your white wire from trailer plug firmly attached to the trailer with a screw or bolted?

2 of 2 people found this helpful.
117,865

Sounds like you are loosing your ground or bad ground connection. (White wire) If trailer is old school wired without the white ground wire try applying a little grease on ball of truck to help complete the ground circuit.

2 of 2 people found this helpful.
Best Answer Mark helpful
50

It was wired old school with the white wire not attached, so I went ahead and attached it with no change.

1 of 1 people found this helpful.
117,865

Ok the brown is your running lights and the yellow and green are your turn signals and brakes. Are you using the proper bulbs? Dual element?

2 of 2 people found this helpful.
117,865

Might want to check the white on the truck side of the connection. If an aftermarket plug they might not have attached it properly to the truck frame.

2 of 2 people found this helpful.
50

Trailer lights worked fine when I had it connected to a Jeep Grand Cherokee, I'll try the white on the truck. The truck had fast flashed on the right turn signal but that has stopped on its oun.

1 of 1 people found this helpful.
117,865

Are your truck lights working normally with trailer hooked up and not hooked up?

2 of 2 people found this helpful.
50

Your right, it ended up the trailer ground was not a good enough connection, I"m now makeshifting a better connection so that I can pull it tomorrow.

3 of 3 people found this helpful.
117,865

That's great. Glad you got it going.

2 of 2 people found this helpful.
117,865

Oh and I too am " tired of not getting to fish". Lol. Thats a good one. Drive safe. And hope you get to go fishing soon.

2 of 2 people found this helpful.

My trailer lights were all working and now I️ only get right turn signal?? is it my truck ? Bad ground ? No broken wires or bulbs on trailer

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