Hello I have got a dodge ram 59 cummings 2004, I have changed the head unit for one with sat nav ect all working but no sound, I have been reading up on here about the Amp and wandered what harness I will need as I have no phone symbol on the mirror, if yes do I hook it up to my amp and then direct to the head unit so I eliminate the original head units harness and the harness that came with the new head unit so confused lol.
Thanx for any help

 

Hello Please can anybody help me.

Pretty plz thanx

 

bump plzz anyone ???