My brake lights don't work on my astra 1.6 2002?

get a man to have a look at the brake switch,it located close to the pivot point of the brake pedal
when pedal is depressed the plunger in the switch comes out to make the circuit when pedal released plunger forced back by the brake pedal return spring

To test switch remove the 2 wires from switch bridge out with a paper clip with IGN on the brakes lights should now be on with pressing pedal replace the faulty switch

wirecutterman
March 2010