geigerr

I got a new head unit installed instead of the shaker 500. I got kicker mid sub put in on the doors instead of stock. I also replaced the other speakers in the door. The door speakers were installed by a stereo shop. I installed the head unit with a wiring hrns and everything is connected good and done right. For some reason when the car is cold. The head unit resets; however the interior lights resets too and also my parking lights reset too. The werid part is it doesnt do it all the time. It also will reset the lights when the head unit is off. The voltage to the battery stays consist when this problem occurs. It normally wont do it when the car is moving; but it has happened. I was wondering if anyone has this same problem or it anyone knows what is going on. I am pulling my head unit out to install an ipod interface soon. If someone can give me a heads up that would be great. Also if some knows which wire in the radio hrns connects the vent system, interior lights, and running lights together. I have an idead that it might be coming from the stock amp power wire. PLease help.....