Does anyone know how to hook up the stock ford amp to the avic d2? The avic does not sound as good as the stock system did. Thanks.

I recently had the same problem in my Nissan. Metra makes a wiring harness that utilizes both the RCA and regular power harnesses from the D2, and then hooks directly into the factory harness. That way the amp is getting the pre-amp signal from the RCAs. I got it for my truck, and I imagine they make it for the Ford, too. If you PM cntrylvr79 about it, I'm sure he could give you a part number.

Thanks for the help I try him.