Yes, i know what you are all about to say, but ive tried it may times.
I have my amp under the passenger seat. two sets of rcas, from the head unit, run up under the glove box and down the passenger side and then under the seat. my power runs from the battery, across the engine bay (from bottom right to top left infront of driver) then behind the pedals, behind the head unit and down the middle to then go under the passenger seat. the only time the rcas are close to the power is when the power runs behind the head unit.
what i want to know is, if i buy one of thoes little box things from ripco, could this POSSIBLY solve my problem? (i.e do they actually even work/worth trying).
The whinging is only noticable when i have my lights on aswell.