PS , case in point. The heater fan on my '86 Dodge PU would not come on at times when I first start the engine. I looked at it for about 3 hrs and came to the conclusion that I didn't know Jack shit about this dang thing. I called Kyle as he delt and had a lot savy on domestic stuff. Took about 5 min. to tell me what to do. Start the engine and if the fan didn't come on , turn the Ing. switch back towards stop just a bit and it should come and it did. Sloppy switch. Hadn't missed a lick in 2 years.
Bottom line--- find someone who knows before you get all P.O. or hurt yourself.