In my 48 F-1 pick up I have a weird situation with the brake lites. I have a Centech wiring harness kit installed and have had no problems for 30,000 miles until this week. The directional switch is an aftermarket "Signal-Stat" unit. The 1157 bulbs are both good and the bright light element works with the right and left directionals and the hazard flashers. The problem is that the left (driver's side) brake light doesn't lite when the pedal is depressed. The brake light switch is a mechanical one from Wire Works. Any ideas as to why I have no left side brake light? Thanks for your help. Bill
If the right side brake light works fine when you push the brake pedal, then there's probably nothing wrong with the brake pedal switch. It sounds like maybe a bad switch contact in the turn signal switch.
...ditto what Rustybolts said, I had a similar problem, turned out to be a bad contact in turn signal switch.