Hello! New to this forum, My son just bought a 1967 Ford galaxy 500, and it has lots of wiring issues. It was a hot mess but we’re working through it bit by bit. I’ve gotten a lot of it figured out but the headlight switch when heats up really bad when you plug it into the harness. the power wire going to the light switch heats up a lot to, to the point that it might start melting the wire insulation. I’m thinking I either have a faulty headlight switch or a poor ground somewhere,any suggestions? When I pulled the headlight switch on, the top two headlights light up but not the bottom two...are all four supposed to light up? Thanks in advance for any help!