As in electrically hot? Because the brake lights are required or were required to work with the key off.
What kind of vehicle?
Just follow the brake pedal up until you find a switch that has a little piston coming out of it up againts the pedal arm itself. It may be a 5 wire switch not a 2 wire switch but in any case it the brake light wire that turns on the brake lights will be the wire that changes to hot (12 volt pos) when the peddal is pressed. Hope this helps.
Check the ground wire to the brake lights.
Yes you can wire just about any light (neon, led, incandesant, etc... )to your brake light , granted it/s within the law. You plice into the brake wire, it's that simple.
i would dare say u have a dead short or ground problems or wire rubn with brake wire
There should be a fuse for the brake lights. If the fuse is good always check the ground wire.
Yes if the wire is part of the brake lamp switch
The parking brake wire is located under the center console. Around the parking brake there is a wire that routes to handbreak, it is normally green.
The wire should rest at 12V+ or zero but when the parking brake is on the wire goes 12V- .
Use a test light One wire (hot) will illuminate The other wire (cold) goes to the brake lights will not illuminate
Yes.