I'm inexperienced an have been over everything. When i turn on my headlights at night my running tail lights DO NOT light up. Brake lights work and blinkers work, but no running lights or license plate marker lights. If those are okay too, see a mechanic; it might be a wiring or ground problem. the rzr will start with brake depressed and wont start when no brake is applied,i checked the 4 grounds behind drivers seat and the brake pressure connector and its fine,i have running lights but no brake light,started out as only one brake light would work now both dont ,just running lights work,any ideas what to do? Just from the lenght of these wires it would appear they attach to the latch mechanism in some fashion. when you say theres no tail lights, do you mean that there is no output from any light, or just the running lights ect? They should come on when I turn on the headlights on the truck, but they do not. All other parking lights work, on back and front. I hope it is that easy. 96 c1500 hazards running and turn signals work no brake lights. Top brake light, turn signals, flashers, and taillights all work. Question: When I plug in my travel trailer all lights work correctly. I have checked for a bad fuse but all looked good. The brake lights work fine so it isnt the bulb. Trailer Running Lights Do Not Work When Connected to a Honda CR-V Getting Reverse Lights to Work on a 2012 Nitro Z-9 Boat Trailer Towed by a 2006 Ford F-150 Trailer Brake and Turn Signals Not Working When 7-Way Connector Plugged into 2011 Ford F-150 Brake lights, T/S are on a separate circuit. THE TURN signals and brake lights will work and so do the 4-way flashers. Checked the fuse box, everything looks fine. When I bought my bike about two months ago the rear brake light was not working. The brake light also works when I hit the brakes. you may also not have dash lights. so we replaced fuse, that didnt work, next was the switch, that wasnt it so we bought a extender wire harness { they were so short. } Click to expand... Did you check all fuses? Lights are not burnt out as when I press on brake, all lights light up as brake lights. ### help . First, check if the fuse is still okay. I have a 2016 f150 and the tail lights stopped working. but also keep match the wires up. I only find a parking light fuse in the motor fuse box. we got my son a 85 Gt and the head lights went out and came back on. Then today the other one isnt working. I did though however notice where the previous owner had spliced into the cable to add lights for a trailer hitch. However the running lights / marker lights and tail lights do not work. Where the brake light and tail light use the same bulb, the bulb contains two filaments - one for brake lights (21 Watts) and one for tail lights (5 Watts). Got to the point that I was on the brake switch an determining its functionality. How do I fix this? It sounds like you may have a bad brake light switch. I will ground the trailer direct and check all ground points. It doesn't matter if the lights are on or off. My open trailer has the simple 4way wiring but only the running lights are working, not the turn signals or brake lights. The 3rd brake light and tag lights work just no tail lights, brake lights or turn signals. The brake lights, turn signals, and back up lights stopped working. I have pulled and checked every fuse under the dash and under the hood, and i can not see any OBVIOUS signs of blown fuses. Its not the bulb because the blinkers work when I hit the right/left signal switch. My 94 ford thunderbird wont go into RND12 and now my brake lights wont come on my locking system has gone out as well as my automatic seating switches and hazzard what could the problem be? My question is , what would be the easiest way to fix? Engine bay fuses. Your stock turn signal lights at 1156, clear, single-element bulbs with amber lenses. In this case, you need to replace the bulb with one with two working filaments. Q: My brake lights do not work, though my running lights still work. Also i've noticed that the backlights for my radio and AC do not light up. I dont know where to go from here. 2010 F150 My running lights and head lights work but my brake lights and turn signals do not 4 Answers. The fuse was blown on the turn signals, fixed that and now ONE front signal light works. I opened it up and only found it used two bulbs, both is great working order. The running light was working when I bought the bike. The brake lights, turn signals, and reverse lights all work. What do I do if neither of my tail lights are working but my turn signal works fine? I installed LED rear lights in my 2010 F150 and loved them. At the rear, only the tail light unit has a dual-element (1157) bulb and is for the normal (dim) tail (running) light and (bright) brake light. Officer was super nice BTW... anyway, not just the back running lights but the license plate lights, the fog lights, front flashers/DRL's. Sorry tail lights do work, brake lights do not - will check switch on brake pedal. we have kinda the same thing . My dash lights all work, and I can't find any blown fuses. I have looked over the rear wiring and nothing seems out of place. Nothing in the cabin fuse box that would relate to running lights. Recently noticed that my rear running lights are not working when my lights are on. If it is, check the bulbs. And also my overhead marker lights will turn on. Anonymous Apr 21, 2009. The brake and turn signal lights work great with the truck, just no running lights. Headlights work, reverse lights work, brake lights work, back signal lights work, 3rd brake lights work. I checked all the fuses and none are blown. If I push on the back side of the switch an activate it manually with my hand the brake lights work. I have the opposite problem in that my running lights work but my blinkers and brake lights do not. I am trying to remember what fuse does this but it is a fuse and i think it's under your hood. Answer: Check both sides of the fuse and make sure power is going through. I have left and right turn signals and brake lights only. My third brake light is also working regardless of the lights being on our off. Everything runs fine except for the fact that the tail lights do not come on with the rest of the running lights. However, when I turn the lights on, my tail lights come on and stay on until I turn them off. Just the two rows that function as both break and running lights. The running lights and turning lights work. So I have a 2008 BMW 128i and yesterday I noticed that one of my tail lights were not working. 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