I've been working through a problem with our radio in our 2006 6 . With help from Forum members, it appears that the fault is in the antenna base in the roof. There is no continuity from the antenna itself, the metal part , to the connector behind the kick panel on the drivers side. I have popped the headliner down above the rear window, and have tried to tighten down the bolt. The antenna lead itself is below the nut that we are trying to tighten. How is this lead held down, is it just a push fit? If it just pops off, as the Mazda on line manual seems to indicate, I could get a socket on there to make sure it is tight. Up till now we have been trying to tighten it with Needle nose pliers!