I have swapped the head unit in my van with a newer unit (Dad had already hacked the dash up good in the 80's to install a 'hi-fi' Stereo with an EQ and all that). I currently have two speakers hooked to the front speaker wires ( 1 to FT LT and 1 to FT RT) that reside under the front seats, and 2 6X9's hooked to the rear (1 to RR LT and 1 to RR RT) that reside on the sides about a foot and a half in front of the wheel houses facing forward. When your back there on the bed, you have to turn the front speakers to face the rear, but your still not getting great sound back there, so I would like to add some small speakers on the pillars by the rear doors for some sound while in the back. How is the best way to wire this? Do I just split the wires from the rear and wire 2 Speakers to RR LT and 2 to RR RT, or is there some sort of trick to it?