With all of the electrical connections in those things it's hard to tell where to begin to look. Those harnesses are in such a bind by the time you hook them up that something could have come loose. My dad has an '04 with some mods and a Juice/ Att. combo and he had a few different problems, including one similar to yours. Anyways... ... three, yeah, three NEW boxes later he's finally got one that seems to be working OK. My advice first off is to pull the two sets of connectors off of the factory harness and check that all of the pins are straight and secure. Then, take a little bit of dielectric grease and put just a touch on each of the connector pins. If this doesn't work give Edge a call and I'm sure they will do what it takes to get it right. Good luck.
Adam