I had to install a fan to cool down two of my aging amps, so I figured I'd also add a relay to power the fan as well as all the remotes to my amps, my bluetooth adapter, and my volume remote. I went with the relay kit below, and I really like it. Made the install fast, easy, and clean. Just thought I'd pass it along in case anyone else is thinking of doing something similar. I guess I'll find out tomorrow whether the fan makes any difference . . . .
http://www.ceautoelectricsupply.com/...relaykits.html