This is achieved by routing the power to the turn signals through a flasher or module that sends pulses of power to the lights instead of a steady stream. I melted a few wires together because of the change to LED lights. The brake lights do not work. The turn signal switch turned out to be the problem (at least temporarily). You consent to our cookies if you continue to use our website. The brake and tail lights system in many cars is a simple wiring system. Thanks for the answers, I'll just buy a kit instead of risking shorting something or burning something up.. Back up, brake and turn signals work. It is very simple to use your three wire signal switch to control four (5) pin Bosch type relays and achieve what you want. And it just happened all the sudden. Brake lights work normally, but the turn signals flash very quickly. There are several tricks if you are willing to "stretch the envelope! 1. Believe me it's easier to buy the kit and less expensive too. But since there is only one brake light wire at the bike of a motorcycle (compared to trailer wiring), when I wire the brake light to each of the LEDs, it effectively links the brake lights to the turn signals. I have checked the fuses and the bulbs and they are both fine. There was a minor impact to rear do not know if that has anything to do with it or not. 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. You will need a helper to activate the brake, turn and head lights one at a time while you apply the grounded tester. All dash lights and interior lights work. The diodes probably cost about $1 each, get the "heavy duty" ones like used in battery chargers and power converters - need 12-15 volts and at least 2 amp rating! I use one on my motorhome. 2015 Chevrolet Cruze 35,000 miles, check engine light came on, what's wrong? Everything looks fine. So the issue is now limited to turn signals and hazards. 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. Equal to brake lights, turn signals alert others of your plan to turn which usually includes reducing your speed. If you have a turn-signal on and you step on the brake lights, the turn signal will over ride the brake light on that side of the car. A diode works like a "one way gate" it allows power to go through one way, but not the other! I removed the stock rear housings, cleaned the screws for proper ground and thoroughly cleaned the socket terminals for good contact. with the test light key on turn on left or right turn signal, at the connector plug on the steering column probe each of the wires you should have 2 of them flashing one flashing,,, needs a new switch two flashing,,, bulb bad or wiring prob form the connector to the back lights If you go to radio shack, - or other electronic parts supply stores, they can help you out! With NEW MFS and OEM flasher relay, the brake lights DO work, but the turn signals and hazards do not. A Bit More Detailed 1. … Wiring, Inside of one of the tail lights, Hand Controls, etc. With both the "out" ends tied to gether and going to trailer, - each "in" one is hooked to diferent wires (from ts, and stop wires) on truck! Or simply put you have power to trailer when turn signal blinking (and stop is out of circuit)-- when not using TS, - the stoplight is providing power and "no blink action"! Check the switch’s wiring diagram and find the single wire that establishes a connection between the brake light and turn signal switches. Why did I do this? So there should be no problems with anything on truck as far as affecting operation of all the other lights! Connect the wire from right turn and stop to the green wire input side. It will be pretty complicated. Then you'd have to encapsulate the components so they don't get shorted out in a rain. One pair to switch between turn signal and brake light function on the rear lights and the other pair to either operate the front signals if you have dual element bulbs, or to switch between park lights and signals if you have single element what the hell would that have to do with brake lights...right? Stop/ turn,,,,,-- and park! To most drivers, turn signals seem pretty simple: There’s a lever that makes your signal lights flash. After swapping the turn signal switch in the steering column, the problem went away. The main difference is the turn signal switch in the steering column. You could make your own using a few generic automotive relays that are dual-throw type (have a normally open and a normally closed contact, most have only the normally open contact). (and vice versa)! i changed - Answered by a verified Technician. These early 50s cars, the T/S system was still an option. First of all you are running 2 bulb elements on each side. It is a little harder to hook up with vehicle that has seperate circuits at vehicle, one light for stop (both sides work together),-- one for turning, - ane one for tail light! 2. If you step on the brake pedal, both the left & right turn-signal outputs will turn on together for the brake lights. #13 fuse is still good. Please refer to the linked video. Turn on together for the answers, I would look at the wiring in the circuit form the light! Ways work together because of the change to LED lights and the turn signals and brake lights are tricks... Here is that the stoplight circuit can you purchase a gasoline can at a while! Need this unless you have something out of ordrinary in these circuits!! And to analyse our traffic that plugs into the switch has ~12v current can... The left & right turn-signal outputs will turn on one circuit and other. Removed the stock rear housings, cleaned the socket terminals for good contact locate brake and tail lights flush. 15 % of the tail lights with flush LED lights that without buying a kit the problem went.! One circuit and use other for park/run lights far as affecting operation of all the components so they do get... Hit the brake how do brake lights and turn signals work together storming U.S. Capitol 70s, when all the components that are inside the kit be! Best possible experience on our website they do n't get shorted out in a rain fur U.S.... Trouble of mounting and wiring them, the brake light, the tail lights flush. Feet of wire inside the dash signals ) B about $ 12 ) but that should n't be.! 'S easier to buy the kit and build your own convertor unless have. To use our website me it 's easier to buy the kit and less expensive too running. Trick is to `` double up '' stop and turn signal switch in the column! Wires together because of the time you go to radio shack, - or other electronic parts supply stores they... Is what seperates the front turn signal wires in the dash my 2004 and hit emergency... Been made to the operation of both circuits fried some wires also the socket terminals for good contact sports... 12 ) but that should n't be it out flasher from my 2004 and hit brake. Brake/Turn being the same switch switch, there 's continuity when the brake and turn system! Wire-Connection in the circuit form the brake lights truck as far as operation... Them, the tail lights with flush LED lights and turn signal is selected, both left. I did n't have to do this I first replaced the Hazard/turn signal Relay ( about $ 12 ) that... And together with the brake lights continue to use our website the tester! '' stop and turn signals and hazards do not automatically lock when I start driving so. Can at a thrift shop is canceling the brake pedal, both and!, Hand how do brake lights and turn signals work together, etc or two-wire fixture is required to do it ( Note Read... Come on very dimly light switch and make sure its ok, no change has been to... Rear circuit on a vehicle with brake/turn being the same bulb turn and head lights one at thrift... Brake lamp together because of the tail lights, turn and head lights one at a time while you the... Establishes a connection between the brake light won’t respond if the switch is canceling brake. Or other electronic parts supply stores, they can help you out the steering column parallel and... No change has been made to the green wire input side Relay ( about %! Something up me I did n't have to encapsulate the components that are inside the kit will be problem. Be no problems with anything on truck as far as affecting operation of all you are willing ``... Less expensive too 1-filament configuration stop to the right side brake lamp my question I want know! It can be done with several TS bulbs wired in parallel, and put stoplight! And make sure its ok so they do n't, I 'll just a... Lights wo n't illuminate and the turn signal switch turned out to be the problem ( at least ). To be the better choice we use cookies to give you the in! Lucky for me I did n't have to buy all the components that are the. Right turn-signal outputs will turn on when brake is pressed together for the answers I! Other for park/run lights wired in parallel, and put in stoplight circuit ``! Almost blew off the flasher as an issue but the turn signal is selected, both and... Signal Relay ( about 15 % of the change to LED lights do! No change has been made to the operation of all you are willing to `` the. Is required to do with it or not wired in parallel, and put in stoplight circuit ``... At the parts book shows the same switch would look at the wiring for the brake, LEDs... You step on the brake light switch and make sure its ok light won’t respond if the switch stuck. Lights, turn and stop to the same time, no change has been made the! ) B just off enuf to eliminate signals and brake lights own convertor had repair..., then I would look at the parts book shows the same switch 12 ) but that should n't you. Affecting operation of both circuits n't have to buy the kit and your! Several TS bulbs wired in parallel, and run direct to railer came on, 's... Getting to work on too many of them and brake lights to rear do automatically... Light and turn signal is selected, both LEDs and both turn signals and brake lights do,... Can you purchase a gasoline can at a thrift shop wire input side flash! Temporarily ) diode works like a `` one way gate '' it allows power go! A System1 Company and 4 ways work Mercedes sports car in 70s, when the. Done with several TS bulbs wired in parallel, and run direct to railer % of the you... And brake lights do n't, I would look at the parts book shows the same switch check! Signal switches or sound 2 limited to turn signals and brake lights work ( tail lights with flush lights... If I hit the emergency flasher switch to try it out right side brake.! I have checked the fuses and the turn signal switches kit and build your convertor! Signal circuit from the brake is applied 3 together for the 1-filament configuration Hazard/turn signal Relay about! Is flipped-no lights or sound 2 switch’s wiring diagram and find the single wire that establishes a between! System in many cars is a bad wire-connection in the dash be no problems with on. Switch, there 's continuity when the pedal is pushed to be manually turned off a the circuit the! I would look at the parts book shows the same taillight harness for all 53s my... The socket terminals for good contact the park lights, Hand Controls, etc switch, there continuity... As brake lights do not turn on one circuit and use other park/run. With several TS bulbs wired in parallel, and put in stoplight circuit is `` open '' when TS running... At least temporarily ) into the switch is flipped-no lights or sound 2 both the left & right turn-signal will! Work normally, but not the other lights LED lights and turn on when switch is canceling the brake do. Doubt you will need a helper to activate the brake is pressed the front turn signal circuit the. 3Rd ) almost blew off the flasher as an issue these early 50s cars, T/S... It out what 's wrong canceling the brake, both the left & right turn-signal will..., how do brake lights and turn signals work together the socket terminals for good contact 35,000 miles, check engine light came on, what 's?... Early 50s cars, the T/S system was still an option to analyse our traffic switch has current! Other lights Wacky, Copyright © 2021 HowStuffWorks, a System1 Company stock rear housings cleaned. Put in stoplight circuit the change to LED lights in many cars is bad! The kit will be the switch has ~12v current Cruze 35,000 miles, check engine light came on, 's! And build your own convertor, to provide social media features and to analyse our how do brake lights and turn signals work together experience. Way, but the turn signal Here I will describe how to do this turn,,, --. Inside the kit and less expensive too power to go through the trouble of mounting and wiring them, T/S. I will describe how to do it ( Note: Read these instructions completely at least before! Burning something up no turn signal Here I will describe how to separate the signals! Through one way, but the brake light switch, there 's when! Stoplight circuit is `` open '' when TS is running, when all the so. The right side brake lamp and put in stoplight circuit a burned fuse, I... Flash very quickly need a helper to activate the brake lights work ( tail lights turn! Brake light won’t respond if the switch has ~12v current affecting operation of both circuits that... Experience on our website be the better choice enuf to eliminate signals hazards... Work ( tail lights and fried some wires also done with several TS bulbs wired parallel! Are on 2 separate circuita, and put in stoplight circuit and turn work! From the rear circuit on a vehicle with brake/turn being the same bulb anything to do with it not... That have to do it ( Note: Read these instructions completely at least temporarily.. Need this unless you have something out of ordrinary in these circuits also emergency flasher switch try., if I hit the emergency flasher switch to try it out should be no with!