I'm having this situation with my blazer, headlights work went they want radio light turn on and off. No fuse are burn. When turn on light doesn't work they just turn on and of by themself sometimes one headlight on sometimes both but when I turn on switch of headlight to turn then on nothing happen.

 

Hello, i see you have no reply s to your problem, it sounds to me that you got a bad ground wire or wire`s there are more than one in that system, when you find one remove it and clean it well and go on to to the next. If i remember there at least 6 ground wire`s that affect that system. Hope i could help. Later bud.....