I've tried to get some help on the turbo buick site but their suggestions haven't helped. I've got a 84 Regal race car that I have a GN Powermaster master cylinder/elect motor and the brake light keeps coming on until you pump the brake pedal but the car has excellent brakes. The light used to come on only when I engaged the line lock but now comes on all the time until the pedal is pumped a couple of times. I changed the ball on the side of the power master unit with a new (NOS) one but that made no differtence. I would rather not just take the bulb out of the dash but it might come to that. Thanks for any imputs.