The vehicle lights work perfectly fine. What do I check first? Factory towing package. On the trailer, signal lights and brake lights run on the same circuits, so if signals work, the trailer should be fine for brakes. found that trailer and bed have a diff … read more However, connect the two and the trailer brake and turn signals don't work. When I got home I plugged my travel trailer and got the same results. Its not the trailer, I have tried multiple. It appears I have two issues. Does anyone know if the brake/turn fuse for towing is in the same location on a 2011 pathfinder. The trailer and brake lights have stopped working. Wiring harness looks excellent everywhere. No blown fuses that state they have anything to do with the trailer All lights work on truck. Checked all the fuses and they all seem good. Factory towing package. I read some threads about some fuses located behind the … and i replaced the trailer lights a few times too. I verified this by testing the trailer harness under the cab with a test light. This only works when you have the Land Rover plug. when i connected both the directional and the brake light it would make a bridge in the connections and it screwed something up. Tail lights don’t light at all when I turn on the headlights. I get no power on left blinker trailer pin or in light socket on truck. 9 Answers. It is on a flat four pin wiring harness. I have tried several different trailers and they all have the same problem. 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. The left turn signal and brake light are on the same wire, but only the left turn signal is working. Trailer Left Turn Signal/left brake light not working. I checked at the plug and get nothing from there except brake, charge, and running lights. Turn signals, brake and hazard lights do not work on trailer. I could maybe see just the signal not working, but the left brake should work if the right does. I Had No Idea There Were Fuse Under There. When I hooked up a different trailer the turn signals/brake lights work but not the tail lights. 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. Checked the harness where the kit plugs in and there's two spots that don't light up, everything else has power. Hazards, Brakes, Running Lights, Turn Signals... Everything works on the trailer except the left side brake light. Turn signals and brake lights don't work. ... You need to check the tow harness coming out of the BCM whick provides both turn signal and brake lights for 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. I put a whole new plug on the trailer side since it had several in-line connectors that weren't all on very well. Top brake light, turn signals, flashers, and taillights all work. Changed all relays in this box still nothing at plug. 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. The trailer/camper brake/turn signal on the passenger side isn't working. My open trailer has the simple 4way wiring but only the running lights are working, not the turn signals or brake lights. Checked the 4 flat plug, signals are good, nothing for the brakes. The trailer wiring isn't the problem. Dash reeds (trailer connected) when trailer is plugged up. All lights work on truck. The right turn signal and brake work fine. Trailer brake and blinker on left side pin do not work either. Still doesn't work. also checked with new bulbs, any suggestions 6 … 2011 F-150 Platinum. I know there are 2 locations for … Got out of the truck and did not have any tail lights, brake lights,turn signals on the rear of the truck. Ford, F250, 2011. I tried a 7 pin to 4 pin adaptor and had the same results as just using the 4 pin. One Of The Fuses Under The Steering Wheel Was Blown. right turn signal,and right brake light not working on my trailer. 9 Answers. The left brake light doesn’t work at all. checked fuse in right kick panel ok, swapped relays under hood, relay good. Bad ground at the light. It worked at first but at some point during the day the turn signals and brake lights quite working. The other box has two of the large relays. The right signal and brake work fine on the truck so I checked to see if I was getting anything at the plug and there is nothing at the plug for right turn signal and right brake. If you don't have a flashing trailer with you turn signal, that side light on your trailer is not flashing too. found that trailer and bed have a different wire all the way to under hood fuse panel. I have seen every light working on a trailer until you flipped on the turn signal and then every light on the trailer blinked. Under the hood are two boxes. Brake lights do not. I just rewired trailer lights from scratch. No trailer brake or turn signal on Ford, F250, 2011. 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. Running lines and trailer brakes work, but brake lights and turn signals do not. could i be looking at a bad turn signal switch? 03/07/2011 by mayer I have replaced the bulbs and the connectors but to no avail. Left turn, back up, tail light, etc. The brake lights on my trailer are not working when hooked up to my vehicle, but the turn signals do work. Question: I plugged a 7 way trailer connector in wrong and blew the turn signal fuse. So it's a bit confusing that both your left turn signal and brake light are not working. There was a short in the right trailer turn signal. 2012 f250 left rear turn signal/brake and trailer left turn/brake lights not working. My truck has lights that work as does my trailer. The left turn signal on my vehicle operates BOTH left and right turn signals very dimly for some reason. Found the running light tow fuse under the hood but cannot find a fuse for the towing brake/turn lights for anything. 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. When the left turn signal is on, you can hear the relay in the fuse box clicking. One next to firewall has a large relay and two smaller ones. 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 checked all fuses in my 05 ram 2500 all was good. The rear brake light and turn signal is not working on the driver side. 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. In some vehicles, the brake light switch is powered through a single circuit that also includes the turn signal light. If all the lights on the trailer work except for the brake lights, i.e. All have continuity. I noticed I had no right turn signal or right brake light on my camper today. 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