Well, it's not the headlamp switch. I installed a brand new, Genuine GM switch, but there's no change. The overhead lights will only illuminate (very dimly), if the override button on the headlamp switch is depressed, same as before. If I turn on more than one overhead lamp, they get real dim, as in barely illuminated.

Does a 1995 model even have a BCM?

I guess it's time to dive into the wiring and see what's going on....

Casey