Regarding the brake light switch there seems to be a difference of opinion over whether the momentary push switch used should be normally open (NO) or closed (NC). Clearly for the brake lights to operate the circuit must be closed. However this doesn't take into account the switch location and actuation. Given it has to work over a range of pedal movements in turn varying from car to car, it has to be mounted in front of the pedal with the switch plunger under some pressure with brake pedal in rest position, i.e. NOT the switches "normal" position. This requires a momentary NC push switch such that when brake is operated, pressure is taken off switch plunger and circuit becomes closed.
Last edited by Richard Wood; 15/04/20 07:26 AM.
