try this... get a piece of wire strip both ends and touch the shield on the sub out with one side and the chassis of the deck with the other side. see what happens

 

ground out the rca's....... i forgot about doing that..... i will hav 2 try!

 

is your sub out in the chassis and the rear out on a teather? cause it might be a chassis ground issue...

 

im a big fan of audio pipe high end RCA's mine are silver jacket with chrome ends. i cant remember what model they are. very well made also E dead is the cheapest iv seen for dynamat material .30 sqft if you can ground it to the grond panel to the left of your battery where you factory ground for your battery is just put a tek screw closest to your factory ground to get the least resistance.

 

yes exactly the sub out is in the unnit itself along with the front. and the rear is out of the teather.... but ther is a function to change the rear to sub wich i did and then its fine using the teather...... so what do i do?? does my head unit need a better ground?

 

hmm, probably the SW out gorunding out on the chassis, make sure the RCA's don't touch the chassis of the radio...or try gounding the chassis of the radio to some where else.