02 chassis ground

[Sapp4191]

hey everyone i just upgrade my headunit to pioneer 780mp and i noticed a alot of sub feedack when i mesed around wit ground wire comin from headunit and i found touching the ground wire to the rca output on headunit stopped all the feeback but i no leaving it attached to rca preamp outputs cant be good so i wanted to know where is a good place to ground headunit in 02 explorer xls

 

[DOZIER]

You could ground it on one of the screws that holds in the brackets that holds the radio.

 

[Sapp4191]

tried it not good ground any other ideas if not i might have to bite the bullet and take to my local car audio shop

 

[DOZIER]

Drill a hole. C'mon, its not that hard to find some metal back there. Make a hole for it and ground it out. If you don't mind spending the money, then go ahead and go to the audio shop.

 

[davesexplorer]

You could probably run a length of 1/0 AWG from your HU to your battery for the price of a normal shop fee lol.

Just scratch around a bit, scrape some bare metal then ground there.. repeat if necessary.