The switch is "normally closed- - -held open". That means the brake lights will operate anytime the pedal linkage allows the spring-loaded switch arm to move. The pedal bellcrank should hold the switch in the open position until you step on the brake, making the brake lights come on.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!