Trailer Lights Help

[Ben Cornett]

It's a trailstar trailer that is less than a year old. The problem is on one side of the trailer I have all of my lights working but on the other I have park lights, and signal, but when I hit the brakes I have nothing and the signal for that side goes out. Just replaced both bulbs but it didn't help. Any suggestions.

 

[David Hunt]

Try plugging your trailer into another tow vehicle and see if the problem is repeated. If not, then there is a problem with your tow vehicle.



If the problem is duplicated on the second vehicle, then you may not have a good ground either in the wiring or on the ball. Those are the first and most obivious starting points.



david.....

 

[Bill Gintzel]

I agree with David. The turn signal and brake lights are on one wire down the left side so it appears the problem is in the connection or the tow vehicle.

 

[Bryan McDonough]

M ake sure you have a good ground wire connection

 

[Jim B]

Its your ground either on the trailer or the truck. Chek both sides and make sure on the trailer that the white wire has a goos clean( bare metal no paint) connection. You really cant count on the ball to give you a ground because of all the paint on the bar, hitch and everything else they arent a very good ground.

 

[Ben Cornett]

Thanks guys. I will check everything out this evening and hopefully find the problem.

 

[Dewey Storie]

I had the same problem awhile back I checked everything but for some reason something told me to check all the 3M Scotchloc

 

[Bruce Freeman]

Bad Ground....at the light or truck to trailer. If the signal works but the brake lights don't I am betting truck to trailer.

BF

 

[Marvin S]

with those symptoms, 95 out of a hundred, its a ground problem.