I want to install a bazooka self amplified sub. I know that I can just run a wire for the power from the front of the car to the bazooka's amp. The problem is I don't know where I can get the signal for the 2 audio wires. Can I just tap into the signal that goes to my stock BOSE 9"??? I'm talking about tapping into the signal after the factory sub amp, not before it. Is this possible???

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Y2K Satin Silver/Ebony 3.2TL
AEM SRI w/ custom CAI conversion | Magnaflow axle-back quad exhaust w/ modded downpipe | Neuspeed Sport springs(modded: 3.5"F/3"R drop) | Acura OEM Wing | Mesh grill | "Euro" Headlight finishers | Graphics by GBM | Acura Indiglo Emblem | Mugen badging | Body color door handles | Polarg M-12's/Eurolite Hyper Blue's | Opti-Blue Xenon High beams | Hiper Strobes | 20%/35% Llumar tint | Razo RA42 Shiftknob | Alloy pedals | Dual 10" Blue neons in bumper | Escort Passport 7500