I am having an electrical problem where I dont even know where to begin. My radio will work when the heat is off but once you turn the heat or air on the radio loses power. My wipers aren't working at all. I was wondering if there is a relay or switch somewhere that could be the cause of this. I have check the fuses and all are good. The wiring all looks good but I haven't had the time to really go through it all that well. I have been reading about other electrical problems and it sounds like a good plan would be to start on the grounds? Any help is appreciated

 

What year and type of vehicle?

 

I have heard of the heat and a/c control causing electrical problems behind the dash, i found one on ebay for a buddy of mine and it solved his radio issues, seems wierd, I googled it and was reading so for 15$ with shipping he bought it and bam....it worked

 

I'm sorry its a 95 cherokee with the 4 litre highout in it. I just broke 200,000 miles in it and now have this problem. I have some time this afternoon and am planning on tearing down the dash and taking a closer look at it.

 

I went out and took the radio and heat-A/C control out and toyed around and figured out it was the blower motor is shorted out. I guess somehow everything is tied together so when the blower is on it and the other two things don't work. As of rightnow both the wipers and radio are working along with heat without the blower.