Trailer lights work but no turn signal

Ty Pope said. If running lights are working but nothing else its most likely a fuse unless someone has just wired or retired the trailer.

Hazard lights work whether the ignition is on or not.

Trailer lights work but no turn signal. Driver side turn signal and brake does not work on utility trailer. All other lights on trailer work. The yellow wire signal and brake measures 0 Ohms went tested with jumper wire from trailer connector to light fixture.

When truck is connected to two other of my. The most likely cause for the turn signals not to work when the running lights are on with your trailer is a bad or weak ground. Its very possible that a weak ground connection can be just strong enough to allow sufficient current for some lights to pass but not enough for everything.

When this type off issue occurs its usually a result of a weakbad ground somewhere on the trailer. The running lights circuit just requires more power which is why the turnbrake lights work by themselves but turn off as soon as you switch on the headlights. F150 trailer running lights working but no turn signal or brake lights.

If playback doesnt begin shortly try restarting your device. Videos you watch may be added to the TVs watch history and. If the pin on your vehicle side connector has a constant signal when your tail lights are on then you know the problem is on the trailer.

My first guess would be a poor ground connection somewhere. Be sure you check that the ground connections for the trailer connector and each tail light are mounted on a good clean ground location. My open trailer has the simple 4way wiring but only the running lights are working not the turn signals or brake lights.

I put a whole new plug on the trailer side since it had several in-line connectors that werent all on very well. I also put and brand new plug on the truck side. All trailer light bulbs work except for one of the 3 middle lights thats bellow the tailgate.

Your brake lights and turn signals for each side are on one circuit. The left side turn signal and brake light is generally the yellow wire going into your trailer connector. The first thing to do is check the fuses on your tow vehicle.

Next inspect and test the connector at the rear of your tow vehicle with a circuit tester like 40376. If the problem is there then you need to clean it if necessary and if that doesnt fix. If there is no power on the running light pin then there is a break or loose connection somewhere between the connector and where it terminates at the front of the vehicle that you will need to track down.

If everything checks out on the vehicle then the issue is on the trailer. If the blinker is working on the truck then fuse is good this sounds like a bad bulb or connection to the light the brake and signal use the same filement in the bulb. Check the bulb first next thing to determine if its the trailer wiring or the truck socket use a testlight and test the connector or the wire at the trailer connector and see if there power in the wire but check close to connector if theres.

If you do this and the trailer light does not do what it is supposed to do then check both your main trailer connector ground and the problem lights ground. Ground connections need to be made to clean bare metal surfaces. This includes both the main trailer ground and.

If you have power confirmed on pin 5 on the truck plug the trailer back in and take your test light to the rear of the trailer and pull off the lens on the left signal light. Wiggle the bulb - that might fix your problem right there. Then check for power on both sides of.

Answer 1 of 5. Hazard lights and turn signals use the same bulb so it is not the bulb the lamp or the cables to them. Turn signals only work when the ignition is on.

Hazard lights work whether the ignition is on or not. The two systems have separate power supplies so they have separate fuse. Ensure the connector is clean and then check again.

Additionally you can check the connector for any faulty or damaged wiring. If all the lights on the tester appear to function properly then the problem likely lies in the trailers harness or lights. If this is the case we move on to the next troubleshooting step.

I have an 06 silverado 2500 and all the lights on the vehicle are working. When I hook up my boat trailer the running lights work but not the turn signals or brake lights. I checked the fuses and they appear fine.

The trailer wiring is all new and works fine when hooked to another truck. Because the most common reason for trailer lights not working properly is a bad or missing ground check the trailers and trucks ground connection first. A poor ground often becomes the culprit when only some lighting functions are working and when lights go out when you push the brake pedal.

Driving lights but no brake or turn signals. If the running lights work the brown wire is ok and the ground is ok. It is the StopTurn wire on each side that is not working.

Bulbs inserted wrong yes - it can happen. Truck not wired correctly or the trailer. How To Troubleshoot and Fix Boat Trailer Lights that Dont Work BoatUS.

If playback doesnt begin shortly try restarting your. Brake and turn signal are separate from running lights. If running lights are working but nothing else its most likely a fuse unless someone has just wired or retired the trailer.

Dont waste time with test lights until you check the fuses. Also there is a diagram on the bottom of the fuse box cover that you can see when removing the cover and turning it over. My guess is a missing fuse or a blown fuse.

When you find the location you can use a test light or test meter to see if the fuse contact points are hot turn on the key andor lights to do the test but it should be hot all the time. The passenger side trailer light every thing works- turn signal brake light head lights. Now for the drivers side still the only time that side will light up is when I turn on the head lights of my truck no brake light no turn signal on that side only.

So now what the heck is going on. Ty Pope said. My truck has lights that work as does my trailer.

However connect the two and the trailer brake and turn signals dont work. I checked at the plug and get nothing from there except brake charge and running lights. I know there are 2 locations.

If the bulbs are not the problem disconnect the trailers wiring system from the tow vehicle. 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. If the vehicles lighting system functions as designed grab a trailer wiring tester to check the tow vehicle socket.

If your signal lights and stop lights are working in the truck then the problem has to be one of the following. The fuse that controls the right side lights in the trailer is faulty your connectors truck or trailer side is faulty your cable between the truck and the trailer is.