How did you tap into the rear speakers? Your sub is Mono, correct? Did your bridge them (negative from one side and positive from the other)? It sounds like you used the high impedance lines on your sub amp since you tapped into the stereo outs. I have the Bose systems and need to figure out the best way to tap in. The front door speakers are the woofers. Plus, there is a seperate Bose amp (right side of the cabin behind the glove compartment I think. I don't know what kind of crossover filtering they may be doing and I'm unsure I want to bridge the front door woofers.
