Start with checking the fuse, then the bulbs, then the brake light switch, then the wiring. If all that checks okay I would suspect the signal switch.
Check all the brake lights and dont forget the one behind the back window. That should fix the problem.
brake lights dont work
bulbs blown on high side or wiring shorted
change the brake lights check the fuse check the brake light swtch
Check the bulbs they are double filamented with the smaller being used for the stop lights
there is a tee conector at the rear of the vehicle that may be have corrotion take it apart and clean it
If the brake lights still do not work after replacing the relay and bulbs the fuse may be the culprit. The brake light fuse is located inside the cabin under the driver-side dashboard.
Check the fuse, the bulbs, and the brake light switch.
all my lights work except my break lights, when i push on the peddle they dont go on can you help me?
I dont know because i dont have a FORD Check your brake light switch on the back of your brake pedal for adjustment.
Brake pedal switch, wiring, bulbs, bad trailer harness (if there), fuses...
Did you replace the fuse? have you checked the circuit board well the lights go on cause they tend to short out often