Sub Giving Feedback, Not sure what to check next. . . Options

[My94RedCelica]

Quick question for you all. I tried a search but didn't find what I need. I have a Kenwood in dash DVD player connected to a Kicker CVR 12" The set up and wiring was working completely fine, but after a week I started getting horrible feedback from the sub. My friend had installed the headunit, so I went back and traced the wires. He had the RCA, remote, and power wires running together. So I seaperated the RCA's from the remote wire and I still have feedback. I checked the amp ground. moved it around a little. Now I have a humming feedback, and it gets higer pitched when I hit the gas. i'm not quite sure what to check from here, so any advice would be appreciated!

[TRD6GC]

Ok, first your wires are run wrong. The POWER and RCA CANNOT be ran on the same side of the car. You have to separate those two and makes sure they never cross, and i would run the remote wire with the power not RCA's, but i do not believe it will make a difference. Also, I do not know exactly where the fuel pump on our cars are, but if you run wires over that if will give you feedback as well. If that does not work than your blew a circuit in your deck. If problem persists repost and i'll tell you what to do to check your deck's circuits. Hope this works