I noticed I had no right turn signal or right brake light on my camper today. I had a shorted trailer give me the same problem. I could maybe see just the signal not working, but the left brake should work if the right does. Running lights work, turn signals work, flashers work. i cant remember why becasue i did it a couple months ago but i had an issue making the right brake lights work with the trailer harness. Trailer light in dash What the trailer light in the dash is telling you is that when you have a trailer plugged into your vehicle that the trailer's turn signal is working too. ... You need to check the tow harness coming out of the BCM whick provides both turn signal and brake lights for the trailer. Trailer Left Turn Signal And Brake Light Did Not Work. Actually, on a trailer plug, wires for the brake lights and the turn signals may have been connected together, not unusual, as many trailers do not have separate lights for brakes and turn signals. Under the hood are two boxes. In some vehicles, the brake light switch is powered through a single circuit that also includes the turn signal light. could i be looking at a bad turn signal switch? When I take my electronic key and unlock the truck the driver rear lights will not light up but when I lock the doors it does light up in the back. It appears I have two issues. Dash reeds (trailer connected) when trailer is plugged up. We did check fuses. Turn signals, brake and hazard lights do not work on trailer. My truck has lights that work as does my trailer. 2011 F-150 Platinum. Turn signals, brake and hazard lights do not work on trailer. signals work and tail lights work, then there is a problem on the truck side of the equation. Fuses under dash check good. All lights work on truck. I checked the trailer lights with my lights turned on and then with the hazard light and then individually with the signals, which all worked, but nothing with the brakes. Brake lights do not. All lights work on truck. I have tried several different trailers and they all have the same problem. The rear brake light and turn signal is not working on the driver side. Ford, F250, 2011. Wiring harness looks excellent everywhere. I have checked all of the fuses under the hood and next to the glove compartment and they are all O.K. Tail lights don’t light at all when I turn on the headlights. Running lights and tail lights on the trailer work fine. If all the lights on the trailer work except for the brake lights, i.e. also checked with new bulbs, any suggestions 6 … thats what i thought too. Does anyone know if the brake/turn fuse for towing is in the same location on a 2011 pathfinder. I verified this by testing the trailer harness under the cab with a test light. Trailer Left Turn Signal/left brake light not working. Found the running light tow fuse under the hood but cannot find a fuse for the towing brake/turn lights for anything. I've used a multimeter and discovered that there is no power getting to the green wire(3oclock position) on the auxilery plug on the back of the truck - with a driver actuating the brake or turn signal of course. Have you checked this with the running lights off (headlights completely off?) The trailer and brake lights have stopped working. Changed all relays in this box still nothing at plug. I just rewired trailer lights from scratch. I checked the fuses and they are fine as well. found that trailer and bed have a different wire all the way to under hood fuse panel. There was a short in the right trailer turn signal. I have seen every light working on a trailer until you flipped on the turn signal and then every light on the trailer blinked. Trailer Brake and Turn Signals Not Working When 7-Way Connector Plugged into 2011 Ford F-150; Parts Needed to Add a 7-Way Trailer Connector to a 2008 Ford F-150; Running Lights Work But Brake Lights and Turn Signals Do Not Work on Coleman Camper; Trailer Lights Not Fully Working on a Trailer Towed by a 2007 Ford F-150 with Factory Tow Package Left rear blinker and brake light not working. Everything works correctly on the truck (all three brake lights). All have continuity. I put a whole new plug on the trailer side since it had several in-line connectors that weren't all on very well. The brake lights on my trailer are not working when hooked up to my vehicle, but the turn signals do work. I know there are 2 locations for … 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. It is on a flat four pin wiring harness. Bad ground at the light. Checked bulbs all were ok. I checked at the plug and get nothing from there except brake, charge, and running lights. What do I check first? Checked all the fuses and they all seem good. They used a 4 pin to 7 pin adapter for their trailer. Owners Manual Says Nothing About Them. The signals work but I've got no brake lights or daytime running lights. The symptom for D1 or D2 failure is “crosstalk” between the vehicle Stop and Turn signal lights. Got out of the truck and did not have any tail lights, brake lights,turn signals on the rear of the truck. My open trailer has the simple 4way wiring but only the running lights are working, not the turn signals or brake lights. Turn signals and brake lights don't work. Blinks for left, nothing for right. We checked every fuse, tested with the test plug they had, and even changed the wire harness they provide with rental. Now my lower brake lights do not work, but the fuse is good. Still doesn't work. Trailer brake and blinker on left side pin do not work either. checked fuse in right kick panel ok, swapped relays under hood, relay good. The vehicle lights work perfectly fine. I assume you have no problem shifting out of park or you would have mentioned it, which tells me the brake light switch is functioning properly. This only works when you have the Land Rover plug. The left brake light doesn’t work at all. The trailer wiring isn't the problem. Better safe than sorry. When I got home I plugged my travel trailer and got the same results. Factory installed tow controller. Hazards, Brakes, Running Lights, Turn Signals... Everything works on the trailer except the left side brake light. Front left blinks fast. No blown fuses that state they have anything to do with the trailer Every light works on the truck. They work fine on the truck, but nothing but running lights on dolly. Factory towing package. However, connect the two and the trailer brake and turn signals don't work. Checked sockets with test light and turn signal seemed to be working, the tail lights seemed to be working, brake lights seem to be working. Checked the 4 flat plug, signals are good, nothing for the brakes. 03/07/2011 by mayer 2012 f250 left rear turn signal/brake and trailer left turn/brake lights not working. Try finding that one when you are hooked up ready to go and in a hurry. This will occur with or without the trailer connected. I checked the bulb on the camper and it is fine. 9 Answers. In other words, when the brake pedal is pressed, both Turn signal and Stop signals light simultaneously; or when the Turn signal is activated, both Turn and Stop signals light simultaneously. I get no power on left blinker trailer pin or in light socket on truck. I also put and brand new plug on the truck side. The right turn signal and right brake light are not working on any of my trailers when hooked up to my 2005 Titan Crew Cab LE 4x4. The turn signals may still work properly, but the electric signal from the brake light switch passes through the turn signal switch (also called a combination switch) before it goes to the brake lights. Top brake light, turn signals, flashers, and taillights all work. So it's a bit confusing that both your left turn signal and brake light are not working. The left turn signal on my vehicle operates BOTH left and right turn signals very dimly for some reason. The boat trailer has its own issue that I will need to sort out, but the 4Runner has an issue with the tail light circuit. Ford, F250, 2011. Left turn, back up, tail light, etc. Front turn signals are working. checked all fuses in my 05 ram 2500 all was good. Running lines and trailer brakes work, but brake lights and turn signals do not. One Of The Fuses Under The Steering Wheel Was Blown. The left turn signal and brake light are on the same wire, but only the left turn signal is working. Bulbs are good and even replaced. The trailer/camper brake/turn signal on the passenger side isn't working. If you don't have a flashing trailer with you turn signal, that side light on your trailer is not flashing too. When the right turn signal is on, no clicking. I read some threads about some fuses located behind the … When I hooked up a different trailer the turn signals/brake lights work but not the tail lights. 9 Answers. Checked the harness where the kit plugs in and there's two spots that don't light up, everything else has power. I recently used a uhaul tow dolly and we could not get the brake or turn signals to work on dolly. Running lights work OK. No trailer brake or turn signal on Ford, F250, 2011. when i connected both the directional and the brake light it would make a bridge in the connections and it screwed something up. It worked at first but at some point during the day the turn signals and brake lights quite working. found that trailer and bed have a diff … read more When the left turn signal is on, you can hear the relay in the fuse box clicking. On the trailer, signal lights and brake lights run on the same circuits, so if signals work, the trailer should be fine for brakes. The right turn signal and brake work fine. Answer: Check both sides of the fuse and make sure power is going through. Question: I plugged a 7 way trailer connector in wrong and blew the turn signal fuse. I tried a 7 pin to 4 pin adaptor and had the same results as just using the 4 pin. This is not the case in every car, so check a wiring diagram to see if the wires go through the turn signal switch. The smaller ones click when the turn signals are on. and i replaced the trailer lights a few times too. Its not the trailer, I have tried multiple. right turn signal,and right brake light not working on my trailer. 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