well basically thats it, the system is fine coz its been tried in my mates car, i disconnected it from my car and after a day or two reconnected it but the sound is not coming from the speakers i have turned up the volume, the stock amp is working fine as the system powers up! the speaker wires are connected fine as i had done all the wiring in the car before! i have checked the fuses but cannot be them as in the is200 it only has systems fuse right?? any ideas? thanks