i have 2 polk subs.. they were doing fine until today when i decided to move my amp behind my seat... no big deal. but when i turned that car on again, after about 5 minutes, there was this high pitched noise that changed to my acceleration and RPMS.. i later noticed that it also made noise when i turned on my blinkers, a bigger noise when i turned on my hazards, and the biggest noise of all (a somewhat BOOM) when i turn on my high beams....it also transmits the same noise when my car is off.... (only when i use electricity) i need help. i spent alot of money on my setup including a custom built box....

now i have checked the ground wire and moved its location. that did absolutely nothing.... i have also unplugged and replugged my RCA cable from both the amp and head unit.... what needs to be done to fix this?! i need my music. and not that obnoxious sound when i drive!

please help. i want to fix this as soon as possible. thanks!