HOT headlight Switch? Don't know why

I did the same as Rusty, except a different brand. 1 relay for each 6024 halogen.

Assuming the wire is getting hot with the lamps on. So wire from headlight switch to dimmer gets overheated. But from dimmer to lamps the wires feel normal? What gauge wire from the headlight switch to the dimmer? Try a 14 gauge wire or even a 10. Don't rule out the lamps as being the problem. Original lamps were non halogen. So if your running halogens. There's the problem. Your wiring is too small.