I recently purchased a 2005 Mustang GT which came with a shaker 1000 system. The original radio and 4 amps in the trunk were replaced with aftermarket units. The amplifier going to the subwoofer in the trunk is not connected to the subwoofer. It is connected to the radio and has power. The amp is an Alpine MRP-M450 Mono subwoofer amplifier. There are only 2 wires coming from the amp (speaker output) to connect to the subwoofer. I was wondering how to connect it to the subwoofer since the subwoofer has two wire harness connections. Any assistance would be greatly appreciated.