[99YellowStang]

i just had a receiver installed and some speakers that are run off the recevier, when i have the lights on, you can hear the engine noise through the speakers and its horribly loud, i forgot what causes this? is it a bad ground on the cd player or something?

 

[KirkMKIV]

bad ground, move it away from the front of the car...

 

[EricTheGreat]

Yeah, re-do the ground under the carpet in the trunk area somewhere, it usually works best their.