Chevrolet Repair: 91 s10 blazer no blower moter not working, s10 blazer, blower motor

Question
My blower moter quit working intermittently for about a week, then quit on me altogether. i later noticed when my head lights are on and i turn the heat or ac on, my headlights dim and the blue highbeam light comes on. if i turn the heat to "off," and turn my lights on they are fine, but when i turn them off, i hear a short buzz from under the dash by my feet. what could this be and how can i fix this? thx!

Answer
Hi Robert.... you either have a burnt out blower motor or a short to ground in the circut....the blower motor itself could be shorting... un plug it and see if the other problems stop. if they don't you may have a wire burnt across the circut... hope this helps