So I knew that my turn signals didn't work, but one of my friends was backing my 81 k5 out of the driveway the today and I noticed that I have no brake lights. I have had this problem with older k5's that the button thta is actuated by the pedal gets pushed over. But upon searching for this easy fix I was dissapointed to find no such luck. Are the brake lights operated by a pressure switch? If so where would this unit be located? Anyone else had problems like these?