Just finished installing a pair of component JL Audio VR speakers front, but I have the feeling that the crappy BOSE amplifier is not feeding them enough. Decided to get one JL Audio G2250 amplifier for the front speakers to stick under the passenger seat. Everything is understood up concerning the power wires, but I have some questions about the amp speakers and HU wiring with my new amp. I need to bypass the BOSE amp for the front speakers but how do I connect the new amp to the pre-amp signal of the BOSE HU? Where do the cables have to pass through and where do they connect with the HU?

Also I want to use the existing speaker wire installation. Where do I connect the speaker-outs of the amps with the existing speaker wires? Do all speaker wires come back from the BOSE amp to the back of the BOSE HU?