I'm not a mechanic but I would start by checking the brake fluid level in the brake master cylinder in your engine compartment
Check your brake fluid level in your brake master cylinder in the engine compartment and see if it is down.
burnt fuse ... tail lights are on a different circuit than stop or turn lights
check that you have double filament bulbs in tail lights
Usually located at the bottom of the emergency brake handle - may have to remove trim for access
check the fuse for the brake lights, they have thier own. also check the brake light switch at the at the top of the brake petal
To tighten the emergency brake cable on a 1990 Geo Prism, start by depressing the brake pedal. Next, locate the parking brake equalizer bar. Rotate both rear tires to feel the brake shoes slightly drag against the brake drum.
The running lights have a bad ground.
Parking brake (also known as emergency brake) foot pedal expands the rear brake shoes against the brake drum holding or stopping the vehicle in an emergency situation not as effective as regular service brakes
burnt out lightbulb!
Check the wire which is going inside of the trunk hood to the brake lights.
Blown bulbs, blown fuse, broken or out of adjustment brake light switch.
check the brake light switch on the brake pedal