In this case, you need to replace the bulb with one with two working filaments. Your stock turn signal lights at 1156, clear, single-element bulbs with amber lenses. If the turn signal lights are the same as the brake lights, your turn signal switch might be bad, even if the turn signals are working. If I push on the back side of the switch an activate it manually with my hand the brake lights work. I dont know where to go from here. Everything runs fine except for the fact that the tail lights do not come on with the rest of the running lights. I am trying to remember what fuse does this but it is a fuse and i think it's under your hood. We are on our first trip with our 2016 Bighorn 3570RS. Just from the lenght of these wires it would appear they attach to the latch mechanism in some fashion. Just the two rows that function as both break and running lights. Now my lower brake lights do not work, but the fuse is good. I will ground the trailer direct and check all ground points. we have kinda the same thing . The tail lights dont work but the brake lights do and so do the turning signals. The thing is, I tried using a replacement tail light even use a whole different replacement tail light dock thing but it still didnt work. Blown fuse, broken wire, or short in your running lights circuit. I installed LED rear lights in my 2010 F150 and loved them. Re: brake lights & turn signals work but not running lights, which color wires are th yah, white is bolted to the trailer or wired to each light black is your running lights and side markers[also may be brown] then green and yellow are blinkers. When the bike is turned on the brake light and all four turn signals are always on (slightly dim). Top brake light, turn signals, flashers, and taillights all work. when you say theres no tail lights, do you mean that there is no output from any light, or just the running lights ect? we got my son a 85 Gt and the head lights went out and came back on. I took my tester and checked all those fuses and all show 0 Ohms but maybe I will pull them out and check them over or see if there is a continuity problem between the fuse and the fuse slots. Brake lights, T/S are on a separate circuit. It's the rear turn signals that do not work as well - front signals do, back do not. I hope it is that easy. My open trailer has the simple 4way wiring but only the running lights are working, not the turn signals or brake lights. The brake light also works when I hit the brakes. Howver, when I plug the utility trailer I dont have any running lights at all. The brake lights work just fine its just that when the lights are on the tail light's arent on but the front one do work. Engine bay fuses. The brake lights, turn signals, and reverse lights all work. 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? All other parking lights work, on back and front. 2010 F150 My running lights and head lights work but my brake lights and turn signals do not 4 Answers. First, check if the fuse is still okay. Answer: Check both sides of the fuse and make sure power is going through. I think the part that is throwing me off is that the turn signals work and the brake lights work so if I had a bad ground why do those still work and not the running lights?? Brake, tail lights not working 1 Answer. What do I check first? I've got a 2001 WJ 4.0, The right brake light wasn't working, so I installed a new bulb, but I must have done something in the process because now all my brake lights work but I have no running lights. The 3rd brake light and tag lights work just no tail lights, brake lights or turn signals. I have checked connections in the four position block the taillights connect to and everything was tight. The running light was working when I bought the bike. I have a 2016 f150 and the tail lights stopped working. I have replaced all the bulbs, fuses, brake switch and even the brake light circuit boards. What do I do if neither of my tail lights are working but my turn signal works fine? Click to expand... Did you check all fuses? I have a 1998 Chevy Truck 1500, and the brake lights do not work. Recently noticed that my rear running lights are not working when my lights are on. As of today when I went out to start it neither the running light or brake light are working. Then today the other one isnt working. My brake lights are not working, but all of the other lights are. but also keep match the wires up. So I have a 2008 BMW 128i and yesterday I noticed that one of my tail lights were not working. My dash lights all work, and I can't find any blown fuses. When i turn on my headlights at night my running tail lights DO NOT light up. The fuse was blown on the turn signals, fixed that and now ONE front signal light works. And also my overhead marker lights will turn on. 96 c1500 hazards running and turn signals work no brake lights. I only find a parking light fuse in the motor fuse box. As this is our first trip, I don't know if they ever worked. My third brake light is also working regardless of the lights being on our off. if you have NO output (brake, running, turn, reverse) then the issue is not a fuse since you would have to have blown 4 or more fuses at once. Its not the bulb because the blinkers work when I hit the right/left signal switch. Brake lights work and blinkers work, but no running lights or license plate marker lights. That is what I mean by running lights. I have looked over the rear wiring and nothing seems out of place. what to do? 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. The running lights and turning lights work. Sorry tail lights do work, brake lights do not - will check switch on brake pedal. I checked all the fuses and none are blown. Anonymous Apr 21, 2009. 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 For whatever reason, the read turn signals and brake light are not on when I turn the bike on. also the dash lights kept going n and off then finally jsut do not come on. I have the opposite problem in that my running lights work but my blinkers and brake lights do not. Not Helpful 7 Helpful 12. Hope this helps, Mike A trusty multimeter indicated no voltage on the running light lead. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. So I replaced my headlight bulbs with LED bulbs and everything has worked great for approximately 6 months. They are just not running on their normal dim running light. My question is , what would be the easiest way to fix? Question: When I plug in my travel trailer all lights work correctly. I also put and brand new plug on the truck side. However, when I turn the lights on, my tail lights come on and stay on until I turn them off. I opened it up and only found it used two bulbs, both is great working order. Question. The brake lights work fine so it isnt the bulb. Somehow there isnt enough slack between the pedal and the booster rod. Just running the basic running lights, but did not do anything when the break was pressed. Checked the fuse box, everything looks fine. I put new bulb in and that did not fix anything. Check the brake light fuse in fuse box that could be blown, and also check to see if the brake light switch is bad, it should be located under the dash and the plunger of the switch should be touching the brake pedal arm. I'm inexperienced an have been over everything. The brake and turn signal lights work great with the truck, just no running lights. How do I fix this? Got to the point that I was on the brake switch an determining its functionality. Verified by connecting another vehicle where the running lights worked as expected. Officer was super nice BTW... anyway, not just the back running lights but the license plate lights, the fog lights, front flashers/DRL's. THE TURN signals and brake lights will work and so do the 4-way flashers. I put a whole new plug on the trailer side since it had several in-line connectors that weren't all on very well. It is quite common for one filament to break, but the other to still work normally. I have checked for a bad fuse but all looked good. Yes No. I don't know if you remember I put those nice LED bulbs in my tail lights just in the top ones not the turn signal and now my driver side rear tail lights are not working any suggestions I've had the bulbs in for almost a month and now nothing oh by the way the little tiny bulb 2 is not working in the tail light 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 running lights are not working but brake lights and hazards do. Also i've noticed that the backlights for my radio and AC do not light up. Running lights not working on trailer light connector. Headlights work, reverse lights work, brake lights work, back signal lights work, 3rd brake lights work. If it is, check the bulbs. I have no idea what else could be wrong. Thanks! They worked fine. Trailer Running Lights Not Working with a 7-Way to 4-Way Adapter. One thing i have noticed upon opening the tailgate is that i have some loose wires after the license plate bulb. 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). Still doesn't work. It sounds like you may have a bad brake light switch. I have left and right turn signals and brake lights only. The trailer uses a 7 pin with brakes, turn signals, stop lights, hot tab, running lights. We use cookies to give you the best possible experience on our website. If those are okay too, see a mechanic; it might be a wiring or ground problem. - Answered by a verified Auto Mechanic. The brake lights, turn signals, and back up lights stopped working. It doesn't matter if the lights are on or off. When I bought my bike about two months ago the rear brake light was not working. They should come on when I turn on the headlights on the truck, but they do not. the issue in that case would reside at a common ground point, or at the junction under the bed by the spare. Nothing in the cabin fuse box that would relate to running lights. However the running lights / marker lights and tail lights do not work. Lights are not burnt out as when I press on brake, all lights light up as brake lights. Q: My brake lights do not work, though my running lights still work. 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. } you may also not have dash lights. 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