Scotty, I have a 1985 Nissan 720 4x4 Brake light problem. The fuse and bulbs are good but I'm only getting around 3 - 4 volts at any point in the circuit (at fuse, brake pedal switch, and lights). I am fairly convinced this is a corrosion problem, but I'm having trouble locating where the corrosion/problem is. I have many years electronics experience as well, but this is kicking my butt! Any suggestions? Thank you and thanks for the dialectric grease videos as I forgot all about that stuff!