Last weekened I setup my 4ch. kenwood amp and connected it to 4 of my speakers. When I turn the car on without starting the engine the amp and everything works fine. Sounds clear and everything. But when start the engine the amp turns on but nothing comes out of the speakers. While driving, if I press the brakes or use the window button, sound will come out of the speakers for about 2 seconds then cut off. after like 10 miinutes of fucking with the window or anything that uses power like turning headlight on/off or using the turn signal...it will finally stay on but it will be all fuzzy for like 3 minutes and then it will clear up. I hope I have been clear as to what is going on. All of my stereo equipment has been pretty much free so I have to be happy with what I have. Ill get you some spec on what equipment I have in a minute.