1985 Nissan 300 zx lighting went out

My Nissan 300zx (1985) has no cab lighting. My
lights worked just fine then my radio started to
flicker on and off and then I turned it off started it
again, I have headlights but they won't go back
down, I have no blinkers, don't think I have tail
lights, and absolutely no lighting in the car except
for the headlight indicator light. I'm not sure where
to start to get it fixed.