We have encountered an issues where that after turning on the sealed beams minute or so afterwards the thermal switch built into the light switch activates and we loose all systems that are ran off the light switch activates. The switch was replaced years ago with aftermarket switch. We’re able to turn on parking lights but after pulling the switch to the second detent to turn on sealed beams minutes later the light switch thermal switch disconnects all power running of the switch. We’ve verified that all wires are connected per the attached wiring diagram. Any ideas? I’m inclined to believe that the light switch is the issue.
