The bulb could be 'blown'. Remove the working bulb from the other light and try it in the socket of the one that isn't working.
There is no switch to activate or deactivate the brake lights on a 1988 Nissan. The brake lights automatically turn on any time the brakes are pressed.
adgust the brake light switch at the brake pedel under the dash
red
This is operating as intended. Brake lights are only activated when the brake pedal is pressed, irrespective of the other lights in use. It is a safety feature so vehicles behind are aware the brakes have been applied. They are separate from the tail lights so they still give a visual indication of braking whether the other lights are on or off.
More than likely, your brake switch is fused, or stuck down.... here. when you push on the brake, the pedal taps a button to indicate that the brakes have been pressed. this button is a gate to the power provided to the tail lights, therefore, when it is pressed, they light up. this button could be stuck. disconnect the harness and see if the lights go off. if they do, replace the switch.
check fluid level
The brake lights.
Probably a faulty brake light switch or the brake light switch is installed incorrectly.
it means that one of your brake lights are out .thats why it only lights up when you hit the brakes. once you replace it , the light will go off.
The rear brake lights.
There probably is only one cause for your interior lights to go on when you apply the brakes. There probably are brake light wires and interior wires that have warned together.
My rear window brake light works, but not my tail light brakes on my 1997 Monte Carlo. What is the problem?