First off I just wanted to say Hi to everyone, this is my first post. I have a few questions about my audio system that I had a friend install (I'm not too good with car audio). First, my aftermarket head unit does not turn on/off with my vehicle ('04 trailblazer). The remote wire or power wire (whatever u wanna call it) from the head unit is currently running under the hood to my fuse box...he just hooked it under the windshield washer fuse because he figured that fuse would turn on and off with the car...so any suggestions on how I can fix this so I don't have to turn my head unit on/off manually?? Also, I have two 12" subs powered by two different amps, and when they beat my headlights dim...i'm assuming a cap would fix this? Any help is appreciated, thanks.