I've got no idea what my car (audi A3 model 2002) useses..


Actually, he may not even have a dimmer line connected to the empeg. I've heard that 2002 VWs apparantly don't and communicate via CAN bus. Audi is also part of the VAG group, and there's a lot of common ideas & parts between the 2 manufactureres.

But if hes has the CAN bus connected to the empeg's dimmer line, that could certainly cause some interesting effects