Another development that may or may not be related. Tonight I am back to no lowbeam or brights and my brake light is stuck on bright. I am going to chase down a relay tomorrow. Do those two circuits have anything in common or is this separate?
When you say brake light, do you mean brake light or tail light or both.
Either way, no direct relation what so ever to the highbeam/low beam circuit.
The tail lights work off the ignition switch. The brake lights do get power from the lighting relay, but it is routed through the brake switches first. Possible I guess, but not probable. Most likely a stuck brake switch.
Pick up two relays and change out both the HB and lighting relay. They are the same relay anyways. This way you will cover both angles if need be.