Left turn signal and brake light not working on trailer

My truck has lights that work as does my trailer. If working by yourself use a small mirror with an adjustable stand so you can angle it to see the trailertruck lights or place a brick on the brake pedal.

If working by yourself use a small mirror with an adjustable stand so you can angle it to see the trailertruck lights or place a brick on the brake pedal.

Left turn signal and brake light not working on trailer. 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. There is no fuse between the BCM and trailer so nothing really you can check.

BTW the wire should be Green with a Black stripe. Brake lamp power is supplied through a seperate terminal based off of tge actual pedal. So its a bit confusing that both your left turn signal and brake light are not working.

If still no resolution it is time to look for a blown fuse in the trailer. 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 faulty the wiring in the truck or trailer is faulty.

My trailer running lights work fine but the turn signals and brake lights do not. I tested the female plug on the truck side to see if I was getting power to it and it is not. Discussion Starter 1 Aug 31 2009.

I have a trailer light problem that is driving me nuts. The left brake light on my trailer and slide in camper dont work. The left turn signal same filament in the bulb works on both of them.

The brake light on the truck works but. This way of testing isolates the trailer from any issues that might be present in the vehicle wiring such as a mis-wired connector. 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.

Does the left stop light and left turn lights on the truck work but left turn for trailer works and not left stop. So you have the left stop light working on the truck but not on the trailer. If working by yourself use a small mirror with an adjustable stand so you can angle it to see the trailertruck lights or place a brick on the brake pedal.

Left trailer brake light not working Does this Chevy have amber turn signals. If so check the wiring at the converter yellow wireand see if it has 12volts coming out of it. I have seen these go bad and have brakesignal voltage on the incoming side of the converter but not the other side going to the 7 way.

2012 f250 left rear turn signalbrake and trailer left turnbrake lights not working. Checked fuse in right kick panel ok swapped relays under hood relay good. Found that trailer and bed have a.

First I had no running lights. Found the blown fuse in the engine comp. Now I dont have left turn signal or brake light.

The right side functions just fine. One of the 10a fuses under the dash was blown replaced that checked the fuses up front again they are all good. I swapped the blue and brown relays around to see if they.

Left turn signal and brake light not working on trailer The fact that when you used your tester and it seemed to work and then retested with a tester with a light and the light was dim tells me that you have a resistive connection somewhere on your truck. You need to trace the wire to see where it goes and test along the way. See if bulbs have burnt out in the left brake light and rear turn signal one bulb if combined and also rear center high mount brake light.

If the left turn signal has a slower speed than the right turn signal this is a symptom of a bulb or bulbs burnt out. All lights work on truck. Dash reeds trailer connected when trailer is plugged up.

Turn signals brake and hazard lights do not work on trailer. Have checked I think ALL fuses and relays. I have different shaped fusebox and.

I usually turn on the 4 way flasher for testing those. The yellow wire is for the left turn signal and the brake light and green is for the right turn signal and brake light. In my experience the ground on the trailer lights to the frame and frame to truck.

Trailer connection from truck does not have power to left turn signal and left brake light. I just got back from the dealership and 10000 labor charge. My problem is the TIPM Fuse Box for short and FCM little silver module hooked to the Fuse Box on the left hand side of the fuse box.

I have a new to me 2003 Ram 1500 Quad Cab 4x4 with tow package. Im getting the left turn signal and brake light and parking lights at the 4 way connector but no right turn signal or brake light. I can hear the relayflasher working under the fuses at the fuse box and it will stop when I.

He recently pulled my flatbead trailer which had a short on the left side to ground. I repaired the trailer wiring and noticed his trailer light when we went hunting last weekend. Neither the 7 pin or the 4 pin have a signal when the left truck light braketurn signal is on.

I checked the fuses under the hood and all are not blown. The turn signal not working makes sense because with the brake lights there is a constant signal coming through which is enough to make the lights illuminate on both sides like they should. But the onoff of a turn signal does not offer enough consistent voltage and makes the problem apparent.

You will first want to check the fuses on your tow vehicle. Some vehicles could have fuses for operating the turn signals and brake lights of a towing package. You will want to check if they are installed and working properly.

The next thing is to make sure the wires on the trailer plug is wired properly to the trailer. First disconnect the trailer from the tow vehicle so you can check the vehicle side connector. Using a circuit tester like part 40376 test the functions of the connector.

Specifically check the right turnbrake to make sure the signal is making it to the connector. 2 Mar 15 2010. 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 for fuses but havent found any bad ones yet.

I recently used a uhaul tow dolly and we could not get the brake or turn signals to work on dolly. They work fine on the truck but nothing but running lights on dolly. We checked every fuse tested with the test plug they had and even changed the wire harness they provide with rental.