this guy nelson from audioconnect@aol.com can help you with questions and parts. he installed 2 pair of nakamichi 6 1/2, JVC mp3 player, and my add-on alarm w/ radar, 2 shock sensor, and 2 siren he's going to do my TV's next. if you need anything e-mail him or call him at (508)523-6389 and tell him George sent you. he gives good prices. he'll try to beat anyone one's price.