you have to pull the feed wire off the brake switch to supply power to the new third brake light. get a test light and test the wires on the brake switch....one is hot all the time the other one gets hot when you depress the pedal....that is the one you need. do not take it pull your power from the rear light it might have an intergrated turn signal wire. which would make your 3rd brake light blink.. ok.have fun! you have to pull the feed wire off the brake switch to supply power to the new third brake light. get a test light and test the wires on the brake switch....one is hot all the time the other one gets hot when you depress the pedal....that is the one you need. do not take it pull your power from the rear light it might have an intergrated turn signal wire. which would make your 3rd brake light blink.. ok.have fun!
Should be HOT at one side of the brake light switch
If your attempting to install a DVD player (in dash) in your car and need to bypass the brake light wire in order to be able to play it while driving its not too difficult. the brake light wire goes hot when the brake is applyied (to power the brake light itself) the DVD player uses this wire to know when the brake light is on or off based on if the wire is "hot" or not. simply splice the wire into a constant power source like the main power wire to your in dash unit.
Use a test light One wire (hot) will illuminate The other wire (cold) goes to the brake lights will not illuminate
Just connect it to one of the brake lights hot lead, and ground it to the truck.
Yes I actually did it yesterday on my land rover I could not get my tail light to come on only my brake light. Use a decent wire like one side of a good speaker wire will do it's what I used. Tie it into the "hot" or positive wire of a working light into the positive of the non working. Make sure the lights you are tieing together do the same job i.e. Q brake light to a brake light. If that doesn't work check your ground. Also this only helps if the wiring is bad that is sending the light the signal if the fixture is bad you will have to replace it.
Probably a broken or shorted wire, or perhaps a faulty ground. I'd check the ground wire first before tracing the hot wire. Both brake lights should be on the same circuit, so, if the problem isn't in your ground, it'll be between the plug and the point where the brake light wires split off from each other.
on brake master cylinder, you have a switch .it will be round with 2 leg's on it run a hot wire to one leg. then run a wire from the other leg to the brake light's.need more info. contact . therevmiyagi@aol.com
If the switch is "closed" both wires should be HOT - with switch open one wire should go COLD-- if not defective switch
I would think that when you changed the brake light fuse you moved the power wire going to the clock, or somehow have loosened the wire for the clock at the fuse panel. You need to find the power wire to the clock and check all this out. Look for any wires that are hanging down and touching the brake pedal arm. This will be a power wire that is hot all the time, ignition on or off.
the black wire is the hot wire
As in electrically hot? Because the brake lights are required or were required to work with the key off.
To wire a light switch to an outlet, you need to connect the hot wire from the outlet to the hot terminal on the switch, and then connect the hot wire from the light fixture to the other terminal on the switch. Make sure to turn off the power before starting and follow all safety precautions.