UP UP and AWAY. Yep DRL/FOG LITES. I have the auto on system for DRL. My fogs are 80 watt and the DRL unit turns them on at 75% of in put voltage. I use the EMF of the coil wire to induce a current flow that becomes the on switch. They turn on when there is current flowing through the coil wire, even as your are cranking the engine to start. It also gives me delay OFF, not much but it was free. It is a simple and cheap unit from J.C.Whitney. Read my remarks to Clancy for the part info.
Happy Trails Beep Beep from foggy Houston
Donald, always in a fog