I have an '08 V6 mustang and anytime i plug in my zune or ipod into the port under the center arm rest and put the stereo on "line in" i can only hear out of one speaker, the drivers side front speaker, i even checked my balance and fade and both are in the center. please help i want to know how to make it so i can listen to my zune on all the speakers

 

Check your 'patch cable' for proper connectivness on another line input jack.

 

yea i already tried that i bought two different patch cables and i still have the same result, hell its the same thing in my wifes 02 dodge ram 1500 both the zune and ipod only play outta one speaker the drivers side front speaker

 

Jack is bad from side loading.
Get it replaced for free under warranty.
Cable is a 3.5mm MONO cable.
Get a 3.5mm STEREO cable with the three
conductor STEREO plug instead of the two
conductor MONO type.

 

I once made the mistake of buying a "mono" patch cable (Only one ring around each end of the plug). Does your cable have two rings around each end of the plug?

 

If it does the same thing in other vehicles then it's obviously not the cars problem. It's either the cable or the Zune.