Here's what I know about it so far. My ETM (electrical troubleshooting manual) is on the way, but not yet in my hands.

Car is a 1988 CRX HF.

Got the car three weeks ago and there was a Kenwood tape deck hardwired in. Removed that deck and put in the OE plug and a '93 Accord tape deck.

About a week ago we put in a Sony CD player using a conversion harness. Everything worked. And then a few days after that when I turned the car on neither the blower or radio came on. Turned the car off, removed key, and then turned the car back on and everything turned on as it should. wtf... Okay.

Then the same happened once or twice more, with the same end result of it working once the car was turned on again.

Two days ago I was sitting in the car with the car running and the radio and blower cut off and then a small amount of smoke was seen right above the center vent area. I turned the car off and we disassembled the center stack and checked the wiring. No sign of smoke damage, but sometime during checking all this out the blower decided not to work anymore.

A friend tested fuse 17 (radio) as pulling about four volts and the blower motor (heater motor) pulling the same. I think he said power supply for the radio is doing about eight.

So I'm driving with no blower for now, granted it doesn't appear to be working at all anymore.

If I have the headlights and rear defrost on, along with the radio, everything works. If I step on the brakes the radio turns off.

Any ideas? Still waiting on my ETM and I am cold.

(Crosspost from the EF section.)