i solved everything but this. there is a red wire with a black stripe that comes from the plug(same on my friends coupe). it splits into 2 red with black stripe wires. there is only one red with black stripe coming from the car. i cut the wire loom and followed it up as far as i could reach. is this important? is this the dimmer like illegal said. i dont want to blow up a new head unit. i will take the dash apart if this wire is important. i will find the damn wire.