Trailer Brakes Not Working But Lights Are

If the lights on the tester function properly the problem is the trailer lights or harness and you need to some trailer lights troubleshooting.

Trailer brakes not working but lights are.

Next check the brake controller wiring. Test all of the lights from the backup lights to the turn signals and brake lights to ensure the problem is not the tow vehicle itself. Step 2 trailer lights not working solution. Troubleshooting trailer back up lights not working.

Can performance tool wiring ptw2979 be used on more than trailer applications. All other lights on trailer work. Running lights are not working. If there is a bad ground connection the trailer brakes will not work.

Blown out light bulbs are the most common reason for why the brake lights not working but the tail lights are. Troubleshooting running light not working on trailer. All other running lights work around the trailer. Driver side turn signal and brake does not work on utility trailer.

Trailer turn signal and brake lights dont work but running lights do. If the bulbs are not the problem disconnect the trailer s wiring system from the tow vehicle. The light itself is a single bulb light so not a blown bulb. Clean both connector plugs.

What s weird is i have 12 4 volts going to all pins on the plug and yet the running lights still don t work. Troubleshooting trailer brakes that engage when silverado running lights are turned on. Remove the screws from the bulb lens which you can access through the trunk or see your vehicle repair manual to get the exact location. For this reason when there is an issue with electric brakes it is usually quite quick to diagnose.

Installing a 7 way trailer connector and brake controller on a 2006 ford expedition. When truck is connected to two other of my trailers all lights work on both driver and passenger side. The possible reasons for brake lights not working but tail lights are. However most problems with these brakes.

But thankfully as the taillights run on their isolated circuit there should not be any problem to track the issues. Troubleshooting tips for no lights on trailer. It is possible that one of the bulbs on your trailer burned out. Besides you are secure as the brake lights are connected to the pedal and are connected to another circuit.

Brake and turn singles work but not my running lights within the brake turn and running bulb. So check the lights. Sever the blue brake output wire leaving enough room to splice it back together when testing is done and then apply the manual slide. The yellow wire signal and brake measures 0 ohms went tested with jumper wire from trailer connector to light fixture.

With few moving parts and no fluid to leak they are as close to trouble free as any brake could be expected to be. Only the left trailer brake light does not work on a big tex trailer. What is my problem. Using a circuit tester like item 3808 you should get output to the trailer brakes blue wire.