The brake light switch was from a 93 dodge pickup. It had 3 pairs of wires. I found that the pair I was using had ceased to function. So I wired up to another pair. It turns out that they worked, but in reverse. So releasing the brake lit the lights, stepping on it shut them off. Good enuff! I entered tech with the main switch off. The main switch is on the drivers side floor so I can reach it from the drivers seat, with a remote control out the back. When they wanted to start the light and horn check, I put my foot on the brake and turned on the main power switch, and ran thru all the functions. When he asked for the brake lights, I just let my foot off the brake.