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?

10 Answers

101,485

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

2 out of 2 people think this is helpful.
101,485

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 out of 2 people think this is helpful.
Best Answer
50

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

1 out of 1 people think this is helpful.
101,485

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 out of 2 people think this is helpful.
101,485

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 out of 2 people think this is 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 out of 1 people think this is helpful.
101,485

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

2 out of 2 people think this is 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 out of 3 people think this is helpful.
101,485

That's great. Glad you got it going.

2 out of 2 people think this is helpful.
101,485

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 out of 2 people think this is helpful.

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