I have just noticed that the rear door has 2 speakers. I am thinking that they originally worked off the factory stereo. I have a Panasonic head unit which has 3 pre-outs (front, rear & sub). There is a red connector behind the stereo but i don't know which wire does what. Is it a low level feed to an active to drive the speakers? is it worth wiring it up?
Any help would be appreciated.