hey guys, i installed a pioneer avh -p7600dvd over the weekend and i had a real fast question for anyone familiar with this dvd unit. IT has 6 rca outputs coming out of the back, 2 marked rear output, 2 marked front output, one marked subwoofer, and one marked center speaker....my rca cable comin off my amp to power my subs has is shaped like this >----<. meaning it is one cable splitting into 2 leads (left and right according to my sub) at each end....now my question is this, where do i plug em lol, i have 2 leads coming from my amp powering the subs, and only one coming out of the back of the unit. IS there a cable adapter that i can buy that will plug into my subwoofer lead comin from the unit that splices it into 2? any help would be awesome thanks guys