Yeah, you probably ran it backwards???...it should be pretty obvious just by looking at the radio plug in the car and the plug in the Dynavin.....one end plugs into the Dynavin at the dash end, and the adapter harness plugs in at the trunk end, and the extension into that.

A good lesson to people reading this.... Lay everything out on a table and plug it all in so you see how it all works BEFORE you get in the car and get yourself confused, frustrated, and bloodied.