the fuse should be labelled tail lights.(whats the problem with no. plate lights?)
check for a loose ground wire
whats the color circuit for the blinkers an break lights?
The next thing to check is the switch that activates the brake lights. It is probably on the master cylinder.
check the dimmer dial or the fuse
Since the break lights turn on when the head lights are activated, the problem is probably in the wiring of your break lights. Someone may have accidentally disconnected the wires of your break lights to your head lights.
Dash illumination brightness control switch is turned off or the fuse is blown.
whats wrong with them??
Most likely the headlight switch on the column, all the light circuits run through the switch, the switch has contacts in it that seem to wear out over time.
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there white
They mean whats the problem.