Right tail light not working when pressing brake w/ lights on.
When I turn the lights on, every light including all blinkers, the hazard lights, bright lights, dim lights and all tail lights are working. While all lights are on, the left brake light works when pressing the brake but the right brake light turns off. When I release the brake, the right brake light comes back on. I have replaced the bulb, but still the right light turns off when pressing the brake and comes back on when releasing the brake. What could the problem be? Please help me if you can.
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Re: Right tail light not working when pressing brake w/...
There should be at least 2 bulbs in the light assembly. One light is the light that is on when you turn on your headlights with out the brake pressed, the other light only lights up while you press on the brake. Make sure you are replacing the correct bulb. You may have been replacing the bulb that stays on. Your lights may be set up to turn off the light that stays on when the headlights are on while pressing the brakes.
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There is a tail lights fuse for the truck, but not for the trailer.
First, check that your left tail light on the truck is working, if not fix the problem (new bulb, bad contact, fuse).
Then the obvious suggestions regarding the trailer are: Check the tail light portion of the bulb to be sure it is not blown. If good (best to put in new one to be sure), then check the wiring from the front of the trailer all of the way to the non working bulb, including every connection and at any place it is secured to the trailer frame. If all is good with the trailer circuit and bulb, then check the truck's trailer connector, including any adapters. If by chance the truck is wired with a flat 4 wire harness the problem may be solved (but usually the blinkers are the problem). Modern trucks require a 5 wire harness which self adapts to the standard 4 wire trailer circuit. Check for dc power (12 volts) from the truck's female connector. One wire will be ground, others will be taillights (turn on headlights), brake lights (have someone press brake pedal), and blinkers (turn on switch and blinkers).
Hi Mary ANN , need some clarification ,the fuse's for all these thing's you have listed , the tail lights, hazard, headlights, blinkers, cruise, brake lights, coolant fans are good ? If good what makes you think you have a short ? Explain ! Are these thing's not working ? That wouldn't mean you have a short . You could have a bad ignition switch !
I think most if not all of the lights go thru the ignition switch. What I mean is the ignition switch must be on for the lights to work. Most of the lights are on different circuits with different fuses and relays. They are connected to the battery and alternator but not directly. Most but not all are connected to the headlight switch. One thing that does tie everything together is the grounding of the car. All voltage goes back to the battery by way of the steel frame of the car. If a ground strap or cable is loose or dirty, electricity has problems getting back to the battery. So the options are the headlight switch, the ignition switch, and the ground circuits. I would start by checking the tail lights or headlights to see if they are getting 12 volts, then check and see if the lights are grounded back to the battery. I've even run a wire from front to rear to bypass the car ground connections to test.
I am unaware of what a "CO" display is.
Now with the blinkers, hazard, horn and brake lights not working that may be the multi funtion switch (blinker switch) that is located inside the column (where the blinker lever attaches).
Obviously the blinker, hazard and horn will all work off of something in the column. Brake lights, you may think a switch on the pedal.
the brake lights do work with that switch but when you have the kind of tail lights where a turn signal light shares the same bulb as a brake light, the brake light is cancelled for the turn signal by running through the multi function switch inside the column.
The third brake light does not blink so its not on that same circuit.
I've worked on these the first drove me crazy. its the turn signal switch every thing runs thru these. head lights, turn signal, brakes. except the third brake light. it runs directly from the brake switch. go figuare
If you have a beebing noise every time you press on the brake, it is because a tail light is burnt out. There are two filaments in each brake light. Therefore, when you turn on your hazards, it will appear that both tail lights work properly. The beebing warning sound is actually a feature that Dodge put in the Rams so drivers would know their tale light is out. Just replace the tail light bulb, and the beebing will automatically cease. To get the tail light housing out, you will need a torex screw driver. Also, you twist the bulb housing out as opposed to pulling it out. There are three prongs that twist out.
TEST FRONT RIGHT BLINKER CIRCUIT AND REPLACE THE BULB,,WITH PROPER BULB...A DOUBLE CIRCUIT BULB IN A SINGLE SOCKET WILL DO THAT ALSO A SINGLE SOCKET BULB IN A DOUBLE SOCKET HOLDER....CHECK LEFT SIDE BULB FOR ACURANCY