Head Unit Installed. Only Sound From Right Side Of Car?

Discussion in 'Mustang Sound & Shine All' started by spdsht, Jul 6, 2013.

  1. I successfully installed my new head unit yet im only getting sound out the right side of my car... only the 8 prong thing from the stock mach 460 is plugged into something, does it have something to do with the other 4 prong one not being used?.. what should I do to fix this issue