No brake lights come on when the pedal is pressed, but the tail lights work.
The brake switch or its feed is open, so the brake lamp circuit never energises.
Suggested test plan
- Verify the fuse.
- Test the pedal switch supply and output.
- Check continuity from the switch to the lamps.
- Repair or replace the switch.
Safety: 12 V systems are low voltage but can still cause burns and fire. Disconnect the battery before working on wiring and never short a battery terminal.
A pedal switch is a simple normally-open contact. Testing its input and output under pressure separates a switch fault from a wiring fault.