Originally Posted by ironchef2011
I added a bare wire/RCA harness. There are four wires going to the stock sub, a left and a right feed. So one pair translates to one single RCA. Both pairs equates to two RCA's. then I just plugged these RCA's into my amplifier that was designed for this application.
Why would there be a left and right feed going to the sub? The amp is not in the sub. The OEM Alpine amp should be mixing the left and right feed and sending one signal to the sub.
It makes sense that you could trick your aftermarket amp by feeding it one pair as a left feed and the other as a right feed.
As for the harness, I bought the same connector the factory uses and I'm going to make a harness that plugs into the truck and has RCA connectors on the other end.