is there a seperate ground on there? Sorry for the dumb question. Dont chastise my stupidity to badly.

if your asking if there is a wire that you need to groung off of the AV in/out harness, then NO.

however the mute wire is in this harness and if you want to do the hardware bypass, then you will need to move this wire over a couple of pins and groung it (the mute wire) and the parking brake wire (off of the main harness) if you(somebody other than the driver) want to be able to watch movies while moving

i did the software bypass because i didnt feel like taking the whole thing out again. So i am good there, i just cant figure out why i still have interference with my RCA cables.