Originally Posted by fzel07wrx
What is the correct way to hook up the OEM Kicker sub to an aftermarket headunit? I have a Pioneer AVH-P3400BH. I have the SVXdc 20 pin and Axxess SWC all soldered up.
The Kicker subs are similar to the OEM underseat subs -- they have a T-harness that you plug in between the factory radio harness and the radio. The sub passes through all of the wires and taps the front speakers and +12V. The Kicker sub also inserts simple high-pass filters between the HU and your main speakers.
As NSBcruiser said, you connect the Kicker the same way as you do with an OEM HU.
One thing to beware of: If your new HU has high-power amps, the OEM sub may not work so well (could start sounding distorted, or even be damaged).