my new audio system: pioneer 7500dvd, avic 88dvd, zapco 350, jl 250/1, focal utopia, id 1dq10.

It works fine until i turn my headlights on while driving. With the headlights on it starts to make an alternator noise type of whinning that changes with acceleration. It is a very low level noise, but still audible. Does anyone else have this problem? Does anyone know how to fix this?

 

one possible problem could be that some electrical wire is real close to your RCA's, like a power wire of some sort connected to your headlights maybe? not sure, but happened to me back in the day when i ran my power wire and the rca's on the same side of the car.

 

Retrace your wires makes non of them have been drilled into or anything. I hope that the Power is running on the opposite side of the car as the RCA's if not, then separate them and see what happens. Whoops symalik already said that.

 

Check your grounding and make sure you have good ground contact.

g35mt