Start by checking the switch for the pedal on the steering column. It's a common place for a malfunction.
check all brake bulbs a filiment may have shorted out
are you sure it is the brake lights and not the tail lights. if it is the brake lights you most likely have a short some where. go to a auto eletrican It is the brake lights which turn on. Short in the switch or the wiring?
A short in the Brake light circuit? Bad brake light switch?
There is a short in the wiring or a corroded brake light receptacle.
You have a dead short in the wiring somewhere. It can also be the socket that one of the bulbs screws into is corroded or shorted out. You will have to inspect all the wiring to the fog lights and find the short.
because your have a short in the circuit or wiring. check your ground wire first. are they corroded. or hanging loose. There is a short (wires touching metal) in the wiring somewhere between the brakelightswitch (above the brake pedel) and the brake lights. Could also be a bad brakelight switch (shorting out).
there may be a short get longer wires
If the brake lights do not work on Chevy Venture van 2000, try to disconnect the brake switch. Then short the two contacts of the connector to check if the brake lights are now working.
Brake lights could stay on in a 1999 Dodge Stratus because of a short in the wiring. If the headlamps are off and the brake lights are still on, check the wiring for the brake lights that is inside the trunk. Sometimes cargo in the trunk can interfere with the lights.
i would dare say u have a dead short or ground problems or wire rubn with brake wire
If you have a plug for trailer lghts it is probably a short circuit in the socket.
Jammed brake switch or short in the circuit.