Mine does this too. Only problem is that I can get the ac fan on but not the regular fan and now it overheats when I turn the air on. I've already replaced two relays at about $100 and I can get the fan to work if I hook it up directly to the battery so it's not the fan. It's still somewhere in the electrical.

I HATE electrical problems. I might just hook it up to a switch and be done with it. I really don't want to spend anymore $$ on it. Any other ideas?