high pitched sound

[kenpo1441]

There is a high pitched sound that comes through my speakers when I turn on the headlights. Here is my set up:

Kenwood Excelon head unit
Kenwood Excelon 5.25 component set
Kenwood Excelon 5.25 mids
Kenwood Excelon 12" DB+ DVC (2)
Kenwood Excelon X-501 (75WX4)
Kenwood Excelon X-401 (1200W)
All Stinger Wires
Stinger 1-Farad Cap
Optima Yellow Top Battery

Does anyone know what could be causing this?

 

[Saleen_SR71]

probably alternator whine. or something to do with the RCA's... you could re-run the RCA's or try a ground loop isolator.

if its alrternator whine then i have no idea of how to fix it

 

[FDNYEMT]

turn the gain down some on your amps. they shouldnt be all they way up.