I tried replacing the bulb, but a new bulb did not work. Everything else - both running lights, right brake, right signal, works. 21 Answers. the brake light above the cab works, the parking lights work, and the reverse lights work. Turn on the parking lights and first one side of the turn signals and then the other. When one of my turn signals burn out my turn signal light in the dashboard blinks a lot faster and makes a fast clicking noise. Running lights work OK. The tail lights work but not the turn signal. The trailer wiring isn't the problem. Turns light doesn’t stay on. when one turn signal works and one doesn't it is usually the tail light contacts or the turn signal switch. Every light works on the truck. Also my left brake light is not working. Using a circuit tester like part # 40376, test the functions of the connector; specifically check the right turn/brake, to make sure the signal is making it to the connector.If it is not working at the connector, there might be a fuse blown or missing in the power distribution box under the hood. Discovered Bulb was good.-Second thought was the turn signal switch since as others have pointed out power runs through it. As of today when I went out to start it neither the running light or brake light are working. Start at the fuse box under the hood and make sure the brake lights fuse is not blown, that the terminals are free of corrosion and that the connections are tight. Only one of the switch terminals should turn on the test light. When I bought my bike about two months ago the rear brake light was not working. Im not sure about the turn signal issue. I may have been too rough removing the turn signal bulb I am unsure. I have not modified anything with the wiring backe there and I do not see anything wrong with it. Once again use the multimeter to test the various sockets, or use a test lamp. Running lights work OK. 2. On my 2011 jk Rubicon I have a problem with the driver side tail light. Need help. If you flip on your turn signal and the indicator light blinks faster than normal, or if you can see that the turn signal does not come on, you have a problem. 2011 f150 left rear turn signal/brake light not working. Well, what i found was there is a switch up at the top of the brake pedel arm. Driver side tail light problem I am new here but been reading forums about my issue. Brake fluid - Answered by a verified Ford Mechanic Why Your Brake Lights Are Not Working, But the Tail Lights Are. My left rear turn signals stopped working recently so I did the easy thing first and replaced the bulbs. OK, not sure how it is on other Chevy vehicles but I have a 2002 Chevy S10. First, disconnect the trailer from the tow vehicle so you can check the vehicle side connector. Brake and turn signal not working on left side. Just happened. Check the grounds and power starting at the switch that you were working on. It controls all the lights. The ground wire connection might be corroded. Trailer brake and blinker on left side pin do not work either. You're going to need a test light and check the turn signal wire at the rear brake light … Check fuses and then start replacing the bulbs one by one. I checked the fuses, they appear to be fine. So the average car owner can troubleshoot these faults with the use of a test light and, sometimes, a digital multimeter (DMM). The bulb is not at issue, as the light comes on just fine when I turn on my headlights. Answer: If all the brake lights were working before, there's a wire that is not making contact. I've eliminated everything on the trailer. Left rear blinker and brake light not working. The left front flashes rapidly and the right side signals work so I figure it's not the flasher unit. I put new bulb in and that did not fix anything. When I go to signal a left turn, the interior blinking light comes on and stays on (does not blink). Put the truck in reverse. Difficulty Level - 4. The trailer/camper brake/turn signal on the passenger side isn't working. … Its a great truck but yesterday I encountered a problem where the rear turn signals and brake lights do not work. The brake lights staying on. This is a quick video I made to help people with their brake light problem this video will work for any car the has combined brake light and signal light. Tried changing bulbs and fuses. I have the wiring diagram on .PDF but I cannot understand it. Turn signal problems and diagnosis can get confusing, especially when a system shares wires and connections with the parking, warning, and braking light systems.. Hazards, Brakes, Running Lights, Turn Signals... Everything works on the trailer except the left side brake light. I have a 1997 Chevy c1500 truck. 21 Answers. A bad ground wire is the most common cause of turn signals and brake lights not working. Brake lights work normally, but the turn signals flash very quickly. I have a 2007 ram 1500 mega cab. I have tried several different trailers and they all … I used a test lamp. F-250 Super left rear blinker and brake light not working. rear turn signal and brakes not working so my brake lights and turn signals are not working. This made no difference. ... Find the wire that connects the brake light and the turn signal switch and replace it. My left turn signals are not working (front or back) and my right ones are fine. This is where some testing and observation is needed to repair a bad connection or broken wire. (About 15% of the time) OR... 3. Now my lower brake lights do not … Question: I plugged a 7 way trailer connector in wrong and blew the turn signal fuse. My rear parking lights and the right side turn signal worked at this point in the circuit. Need help. The brake lights and taillights are often comprised of one light bulb, but they work differently. My left turn signal and left brake light are not working on my trailer. Problem: Turn signals on one side (left or right) of the car are not working. I have checked the bulbs an dthey work fine. -64 Dart one side brake light and turn signal not working.-Running lights were fine (it's a dual filament bulb)-First thought was bulb. 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. The running light was working when I bought the bike. I believe one bulb controls both of them. I am assuming since the one light turns on that there isn't a wiring problem or a short. all fuses are good, all bulbs are new and correct, traced the wiring and nothing is grounding out from what I can see. The middle run light is working,(the tiny one) I did not test the reverse light. Left rear blinker and brake light not working. My hazards switch has been unworking since I got the vehicle 2 years ago (1995 chevy s10) so I can't test the lights that way. It burned one bulb and started melting the plastic where the contacts are. Factory installed tow controller. I have a 2007 Chevy Express with the same problem. Fuses good, bulbs good (dual element lamp, turn signal and break are same element) running lights work (other element) Relay blinks fast and not getting voltage at light for blinker or brake. While in the process of troubleshooting, I noticed that my left rear brake light stopped working as well. Trailer brake and blinker on left side pin do not work either. Brake Light Not Working After Replacing the Bulb. Sometimes this varies and the turn signals and brake lights come on very dimly. Which alerts me when one of the bulbs needs replaced. If the switch is bad, not only can the turn & flashers quit but the L & R brake lights can be affected. Front left blinks fast. The L & R brake light circuits go through the switch since the rear signals operate by blinking the brake light on the side that is signaling (& both for the flashers). Turn signals do not flash at all, both directional indicators on the dash come on dimly when the brake is pressed, and the brake lights do not work. Front left blinks fast. I once had a 1988 C1500 and one day that happend to me. 2- Left or Right Turn signals not working. Most common problem sources include bulbs, wires, connectors, fuses, flasher units, and switches. 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