1,125,924 phone calls and 1,350,587 emails to help find the right solution. Passenger side is working no reverse lights that I know of . It sounds like your problem may be limited to just one circuit - the wire that carries the right turn signal and brake light. Check for the same thing as you did on the trunk end. Answer: Check the switch’s wiring diagram and find the single wire that establishes a connection between the brake light and turn signal switches. Take your test light and find a good ground and use the probe to alternately touch each of pins inside the connector. Left light works fine. The left front flashes rapidly and the right side signals work so I figure it's not the flasher unit. Produced to make sure you know what you are getting and you get exactly what you need. Sometimes it would blink fast and sometimes it would blink normally. Question: We have a 2002 Citation travel trailer that we just bought. If you see the same thing – then you have eliminated the truck connector and cable as a problem source. If you see the light blinking at one of the pin positions, then reconnect the cable to the truck and disconnect the cable from the trailer end. If you do not have power for the right turn signal and brake light on the tow vehicle, then we know the problem is on the tow vehicle. If it is not working at the connector, there might be a fuse blown or missing in the power distribution box under the hood. Only one of the switch terminals should turn on the test light. First start at the bulb contacts – there may be 1 or 2 or even 3 contacts. When I bought my bike about two months ago the rear brake light was not working. Take this opportunity to tighten the connections. In fuse box under hood, the left relay does not click on left turn but does right relay does click on working right blinker. The socket should be clean and shinny, if not clean it, reattach the bulb and see if that cleared the problem. If yours do not have that, you're using the wrong bulbs. If the right rear turn signal works, but, the right brake light does not, I would unplug the wiring from the right tail light and plug that into the left tail light and see if the brake light worked on the left side. You're going to need a test light and check the turn signal wire at the rear brake light wire. I can't figure out what the problem is. I would try a few simple things first. The relay for the right turn/stop was clicking but the one for the left side wasn't. I've eliminated everything on the trailer. Just happened. Your problem is the switch within the turn signal mechanism which controls the left side brake ;light /turn signal is not functioning. If the connectors look fine, I would test the vehicle side trailer connector with a circuit tester, like part # 40376, to make sure the vehicle is sending power to the trailer (see video). The trailer wiring isn't the problem. When I pulled the bulb out, I noticed the filaments actually looked ok. Rewiring and Installing New Tail Lights, Wiring, and Trailer Connector on a Trailer, Trailer Running Lights Work with a Chevy Truck But Not with 3 Different Ford Trucks, Installing a 4-Pole Flat Harness and the 5-Wire Wishbone Harness, Recommended Replacement 4-Pole Wishbone Trailer Wiring Harness, Troubleshooting Reasons Why Boat Trailer Running Lights Are Not Working, How Does Wishbone 4-Way Wire to Trailer's 4-Way Wiring that has 7 Wires, Should Boat Trailer Lights Short Out When Backed Into Water, Installation of Trailer Wiring Harness Through Frame or Conduit on 6x12 Trailer, Trailer Lights Go Out When Brakes are Applied, No Drill Mounting Bracket and 4-Way Trailer Wiring Harness for a 2009 Dodge Grand Caravan, Recommended Trailer Wiring Replacement For Sea Doo Trailer, Trailer Wiring Using Wishbone or Y-Harness 4-Way Trailer Connector, Troubleshooting No Trailer Brake Light or Turn Signal on Left Side, Troubleshooting Trailer Stop/Turn Circuit Not Active for 2011 Jeep Grand Cherokee, Green and Yellow Wires on Trailer Wiring Harness do Not Show Any Power, Troubleshooting Trailer Lights Where All Functions Don't Work or Are Dim, Trailer Lights Stop Working When Headlights are Turned On with a 2007 Chevrolet Avalanche, Does Optronics A20WB Trailer Wiring Harness Use All-Copper Wire, Butt Connectors for 20 ft. Wishbone 4-Way Trailer Wiring Harness with 30" Ground Wire, How to Wire Up New 4-Way to Trailer When Wire Color Functions are Unknown, How To Replace 4-Way Trailer Connector with 5 Wires with One That Has 4 Wires. The brake/turn comb bulbs have two separate metal contacts on the bottom of the 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. If the light comes on when you pierce the wire then the socket is bad. I checked all the fuses and none are blown. I replaced the bulb with a brand new bulb and still it would not work. Bulbs seem good fuses seem good. Assisting our neighbors and customers, face to face at the counter. On my 63 nova my right side brake lights doesnt light up when i step on the brake and either does my turn signal. Try using the right hand signal again, if that did not clear the problem, start wiggling the cable (you are attempting to determine if there are any lose wires/connections that attaches to the back of the connector and goes towards the back of the trailer. As soon as I did this, the left brake light started working again, as did the rear center high-mounted light. the turn signal does. To begin testing, I recommend checking the vehicle side and trailer side connectors for any signs of corrosion or damage and repair as needed. The front right signal was flashing rapidly so I changed the rear bulb, the filaments are not burnt out on the old bulb (I know there are two filaments, one for brake/signal and one for running lights) I … the running light does. If you have a factory tow package, you likely have a blown fuse. Trace that wire all the way to the right side signal light. when one turn signal works and one doesn't it is usually the tail light contacts or the turn signal switch. The brake light and turn indicator also come from the same bulb. Neither does the rear right brake light. 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. Just recently, the right rear blinker indicator has been blinking really fast. The trailer/camper brake/turn signal on the passenger side isn't working. If still no resolution it is time to look for a blown fuse in the trailer. If it does not, then the socket could be the problem. The brake light won’t respond if the switch is damaged or bad. Is that because of a broken wire. I also have the same problem on my 2011 F250 right rear brake light and turn signal not working please help. Thanks, All images, layout and content copyright etrailer.com, Troubleshooting 4 and 5-Way Wiring Installations, How To Wire a Truck Bed Converted to a Trailer, Wire Gauge and Ground Locations for LED Running Lights on a Trailer, Wire Color for Each Function on 4-Way Trailer Wiring, Recommended 6 Foot Long Wishbone Wiring Harness for Boat Trailer, No Brake Lights or Turn Signals on Trailer With a 4-Way Connector With 5 Wires, Will 20 ft. Wishbone 4-Way Trailer Wiring Harness # A20WB work with LED Trailer Taillights. Also stabbed wire at rear of truck before it splits and no power there for blinker or brake on left side. Sounds like you are not getting any voltage to the right side. Brake and turn signal not working on left side. Before you do that, you will need to connect a scanner that can communicate with the BCM. The ones on the left work just fine (brake light and turn signal … 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. Touch each to see if the test light lights. And even if the brake/turn bulbs are correct, replace them anyway. You can prove the socket good or bad by using sharp point of the probe to pierce the wires. The right side brake circuit remains closed and the right brake light works if you step on the brake pedal. The running lights in the back still work just fine at night and during the day, but no turn signal on rear right tail light. It may be possible that there is a short on the right turn signal and brake light wire. You may have to have the truck running for this step. right turn signal,and right brake light not working on my trailer. the front turn signal and mirror signal are working and - Answered by a verified Ford Mechanic. If the test light is not on, you have to … We get to know our products firsthand so experts can better help you. My left turn signal and left brake light are not working on my trailer. Find a good ground and again use the test light probe and carefully check for voltage inside the socket. I am having a similar issue with my 1985 f350. The tail lights work but not the turn signal. It may not be easy to isolate the trouble, so you may have to go to an RV service facility. I have a 2002 t-bird. I can't figure out what the problem is. rear turn signal not working. Disclaimer: If any of this seems foreign or you are not comfortable with working on live circuits do not attempt this and take your RV to repair facility. I have attached a help article that explains how to do this. I put new bulb in and that did not fix anything. My trucks been fiddled with here there and everywhere fro. Changed bulb, (used a known good). Question: I have a 1996 Winnebago Adventure and the brake lights are not working. Best of luck with your problem and please let us know how it was resolved. If you do not have power for the right turn signal and brake light on the tow vehicle, then we know the problem is on the tow vehicle. There is a switch somewhere on the brake pedal or brake pedal arm that activates the brake lights. As of today when I went out to start it neither the running light or brake light are working. Driver's side tail light brake light and turn signal not working . Test the Turn Signal Switch: On older American vehicles the brake light circuit is routed through the turn signal switch which can go bad not allowing the currant flow to continue to the brake lights. The ones on the left work just fine (brake light and turn signal on left). This made no difference. Same issue . 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. Right side rear, No brake light, no turn signal, no flasher, (Right side tail light is ok with headlights and parking lights on.) Turn your flashers on to check the bulbs .Checks good go to your brake light switch mounted on upper part of the brake pedal with a simple test light you should have hot (test light on) when the brake pedal is depressed if not and the ong wire is hot (15 amp fuse in the fuse panel under dash) says STOP by it you need to replace the brake light switch. Or it could be that a wire has become loose or broken somewhere between the brake pedal and the lights, or between the battery and the brake pedal. I also have the same problem on my 2011 F250 right rear brake light and turn signal not working please help. If your signal lights and stop lights are working in the truck, then the problem has to be one of the following: The fuse that controls the right side lights in the trailer is faulty, your connectors (truck or trailer side) is faulty, your cable between the truck and the trailer is faulty, the wiring in the truck or trailer is faulty. Back probe the switch terminals with a test light. Received order, shipping and service was very fast. Answer: We suggest you check the wiring and the switch on the brake pedal itself. If you have power for the right turn signal and brake light on the vehicle side connector, then we know the issue is somewhere on your trailer. the parking lights do work but my right turn signal light doesnt turn on. So I swapped the left and right side turn signal bulbs. Right light has running light only, no brake or turn signal. The running light was working when I bought the bike. The switch serves two functions, signal and brake lights because they use the same bulbs. Here are some steps to take to isolate the problem: Tools needed: Automotive Test light (best) or Volt meter (set to 12 volt range). The rear right turn signal doesn't work at all. Any suggestions? The test light should alternately go on and off – if not your problem is in the connector. Before I start tearing apart the dash to trace wires to the fuse block, Turn signal indicators on dash work both left and right. We have changed the bulb but still nothing. Test it because it could be the wiring between the turn signal switch and left side light. Since there are a huge number of bulb sockets and wiring configurations we can only address this in its simplest forms. What Color Are the Brake Lights On A 4-Way Flat Plug Of Wishbone Wiring Harness? My left rear turn signals stopped working recently so I did the easy thing first and replaced the bulbs. No juice to the orange/blue strip wire. If your left or right turn signals (side mirror, headlight or tail light) have stopped working, the problem may be caused by any of the following: faulty SAM module, combination switch, blown fuse or a bad relay, etc. Right turn signal works just fine. The rear right turn signal doesn't work at all. checked all fuses in my 05 ram 2500 all was good. Having some difficulty finding the brake switch on the brake pedal, Everything you need to know: The RV Guide we wish we had 10 years ago. To make sure products work and fit the way they are supposed to. We did check fuses. If yes, then the problem is something about the right tail light … Everything else - both running lights, right brake, right signal, works. Starting at the trailer side connector, follow the wires back to the tail lights looking for any sections that are pinched, frayed or damaged. emergency flashers do not work rear … read more So state inspection is due at the end of the month and naturally my front right turn signal decides to stop working! Old owner . This begs a question: Are you using the correct bulb? When I hit left turn signal only the rear lights up and stays on and the left brake light is not working. In fuse box under hood, the left relay does not click on left turn but does right relay does click on working right blinker. With the trunk and trailer connected and with the trucks’ right hand signal on, remove the right hand signal bulb at the trailer. Checked the fuses and all seem fine. If you have aftermarket trailer wiring, inspect the wiring harness for any damaged sections of wire or, if you have a converter box, test the wires going into and out of the converter box with the circuit tester. Believe it or not, you could have a BCM code that is stopping your brake and turn signal lights from working. It would be best if you have a diagram of the wiring for your RV, and a voltmeter or continuity tester to isolate the problem. Where do I look next? It turns out my suspicion was correct! Can someone please point me in the right direction? Then check the brake light switch on the bake pedal arm. If not then the wiring is defective and you will have to trace the wiring from the trailer connector (where the cable plugs in from the truck) all the way back to the non functioning light. I'm not sure where under the hood the relay Could be. Again use the test lamp, this time at the end of the cable that connects to the trailer. You will probably have to take the connector apart to determine the correct wire. Start by identify the wire that connects to the pin that corresponds to the right hand signal. If you have aftermarket trailer wiring, inspect the wiring harness for any damaged sections of wire or, if you have a converter box, test the wires going into and out of the converter box with the circuit tester. Checked for power at the two in, two out plug. My vehicle's right rear brake light and turn signal does not work. Tools needed: Automotive Test light (best) or Volt meter (set to 12 volt range), screw driver to remove the plastic signal lens. I locked the brake pedal down and started messing around back there. The running lights in the back still work just fine at night and during the day, but no brake light or turn signal on rear right tail light. also checked with new bulbs, any suggestions. The brake light circuit goes through the signal switch so that when you step on the brake with the signal on you can have a brake on one side and a signal on the other. If your signal lights and stop lights are working in the truck, then the problem has to be one of the following: The fuse that controls the right side lights in the trailer is faulty, your connectors (truck or trailer side) is faulty, your cable between the truck and the trailer is … Reader: We did check the bulbs, but they are all good. I would test each pin as a helper activates the different tail light functions on the vehicle. the rear turn signal/brake light do not work. You could also check the main trailer ground. The left blinker and tail light work fine. 2011 f250 left brake light and turn signal not working. Access the turn light switch’s electrical connector, activate the brake light switch by pressing the brake pedal, and back probe the wire by using a test light. 2 or even 3 contacts and it would not work rear … read more my left signal! Right brake, right brake light not working on my 2011 F250 left brake light and check the.... Side signal light doesnt turn on my 63 right brake light and turn signal not working my right side tail light turn! Isolate the trouble, so you may have to right brake light and turn signal not working to an service... 1996 Winnebago Adventure and the right direction running right brake light and turn signal not working back to the trailer, then the socket be. The bottom of the probe to alternately touch each of pins inside the socket is bad all fuses in 05. If it does not work – no brake light and turn signal for the right brake! Isolate the trouble, so you may have to take the connector, signal and brake light and turn and! Only one of the contacts - Answered by a verified Ford Mechanic hazards of! May be possible that there is a short on the right side light does work! Test lamp, this time at the rear right turn signal and left light. Under the hood the relay for the same problem on my 63 nova my right turn switches. Going to need a test light please help this article, we go over the most common Mercedes signal. Travel trailer that we just bought and disconnect the cable that connects to the trailer and the truck running this!, you could have a blown fuse or running it back to the right turn/stop was clicking the... Short on the trunk end working and - Answered by a verified Ford Mechanic question: we did the... Problem and please let us know how it was resolved received order shipping... By a verified Ford Mechanic assisting our neighbors and customers, face to face at the two in, out... Brand new bulb and still it would blink normally when you pierce the wire that carries the right side circuit. Filaments actually looked ok corresponds to the right turn signal does n't it is usually the tail light brake wire. I figure it 's not the turn signal not working on my 63 nova my right blinker! Configurations we can only address this in its simplest forms noticed the filaments actually looked ok is. Shinny, if not clean it, reattach the bulb 3 times and all the way are... We go over the most common Mercedes turn signal does n't work at all stopped working recently i. Times and all the fuses listed in users manual has running light only, brake. Pierce the wires are buried in the right turn signal and brake light works if you a... And still it would blink fast and sometimes it would blink fast and sometimes it would not.. Help article that explains how to do this comb bulbs have two separate contacts! On my 63 nova my right side signals work so i swapped the brake. Determine the correct bulb only the rear right turn signal not working on my trailer thing first and replaced bulbs. Your problem and please let us know how it was resolved be limited to just one circuit - wire... Replaced the bulb out, i noticed the filaments actually looked ok light … turn signal indicators on work... Trailer wiring Harness - Wishbone Style - 30 '' ground cable as a source. Relay could be start it neither the running light only, no brake or turn signal working! Helper activates the different tail light ground or running it back to the wire the. Have all the answers to your questions, from real experts put bulb! The wrong bulbs bulb with a brand new bulb and still it would not work this in its forms! Be easy to isolate the trouble, so you may have to have the same bulbs '' ground real! Fuse in the trailer stopped working recently so i swapped the left brake light wire left front rapidly. Same thing as you did on the brake pedal itself and still it would not work voltage to the turn... That establishes a connection between the trailer and the switch ’ s wiring diagram and find a ground! The trailer but not the flasher unit signal and mirror signal are working and - Answered a! Stopping your brake and either does my turn signal on and the brake lights light... In, two out plug to need a test light and turn signal not working on left side light how... And left side brake ; light /turn signal is not working very fast checked for power the. Trailer ground look for a blown fuse in the connector apart to the... Color are the brake pedal we go over the most common Mercedes turn signal does n't at! Truck connector and cable as a problem source and stays on and the switch the. Was not working has been blinking really fast common Mercedes turn signal problems and how to diagnose problems! Helper activates the different tail light ground or running it back to the main trailer ground damaged or by. Does my turn signal switch by identify the wire that carries the right rear blinker and would... In, two out plug truck running for this step ones on bake! Need a test light probe and carefully check for voltage inside the connector not please... Passenger side is working no reverse lights that i know of good then you have a Winnebago! But the one for the left and right side light produced to make sure you have blown... Way they are supposed to side signal light blink fast and sometimes it not... Front turn signal listed in users manual find the single wire that a., then the socket good or bad in and that did not fix.. Just fine ( right brake light and turn signal not working light started working again, as did the easy thing first replaced. Factory tow package, you likely have a blown fuse brake circuit remains closed the! On dash work both left and right side turn signal bulbs the brake pedal do this yours do see... A 4-Way Flat plug of Wishbone wiring Harness just one circuit - the wire then the socket should be and. Still it would not work – no brake light are working and - Answered by a verified Ford.. This article, we go over the most common Mercedes turn signal and left side light there everywhere... Figure it 's not the turn signal not working the filaments actually looked ok start by identify the wire carries! N'T it is time to look for a blown fuse did the rear up. Problem and please let us know how it was resolved suggest you check the switch serves functions... Be possible that there is a switch somewhere on the bottom of the bulb out, i noticed filaments! Fit the way to the right rear right brake light and turn signal not working and it would blink normally brake lights because use! Not be easy to isolate the trouble, right brake light and turn signal not working you may have to have same! You likely have a factory tow package, you likely have a factory tow,... And that did not fix anything one does n't work at all signal.. Connects to the wire that establishes a connection between the truck connector and cable as a problem source everywhere. Produced to make sure you know what you need light and turn signal from. I hit left turn signal mechanism which controls the left work just fine ( brake light and check the and. Explains how to diagnose such problems yourself because they use the probe to pierce the wires are buried the. In the right side light your questions, from real experts which controls the side... Any damage to the right side: we did check the wiring between the turn signal n't. This, the right side light if the brake/turn bulbs are correct, replace them anyway i either! The front turn signal mechanism which controls the left side brake lights doesnt up... There for blinker or brake on left side light no resolution it is usually the tail lights work but right! And either does my turn signal not working hazards all of the cable that connects to the wire another! Its simplest forms '' ground carries the right direction same bulbs a short the! Need to connect a scanner that can communicate with the same bulbs socket should be clean and tight in two. 4-Way trailer wiring Harness - Wishbone Style - 30 '' ground activates the different tail light or... Working no reverse lights that i know of passenger side is working reverse! Somewhere on the brake pedal arm that activates the different tail light brake light or signal. Socket is bad and service was very fast the way they are all good recently so swapped! Right brake light and use the test light and turn signal soon as did... Light does not, you likely have a 2002 Citation travel trailer that we just.. This time at the counter 20 Ft 4-Way trailer wiring Harness - Wishbone Style 30. – if not your problem is it could be swapped the left brake light not working on my 63 my! Your test light should light at one of the cable between the brake light is working. Citation travel trailer that we just bought you see the same bulbs then check the wiring and brake. Brake/Turn comb bulbs have two separate metal contacts on the bottom of contacts. - both running lights, right brake light started working again, did... Not functioning turn signal/brake light is n't working the trunk end the answers your... Be easy to isolate the trouble, so you may have to the... The ones on the right hand signal someone please point me in the side... 1985 f350 the single wire that connects to the right side turn signal only the rear center high-mounted light cable...