Just installed the AVIC Z1. I have a Honda Ridgeline and I purchased a antenna connector adapter from Crutchfield that converted the Honda connector into a Motorola male type connector that the Z1 needs. The FM reception is not bad but the AM is terrible. Is anyone else having problems like this? Any help would be greatly appreciated. Thanks.

It's an issue with that antenna adaptor. What you can try doing is taking that wire on it and splice it into the red wire. It helps sometimes.