Satellite Radio.....

[Lou Van Anne]

...anyone put one in their Avanti.....?

[Jim78]

Yes.  I have a Sirius XM radio.  Since I have several vehicles, I got a radio that uses a docking station, rather than being hard wired.  I put a dock in each car (docks available cheap on ebay) and then need only one radio/subscription.  I really didn't want the XM antenna on the Avanti, particularly since it is magnetic, which doesn't work quite so well on fiberglass.  But, I discovered that I could take advantage of the fact that the fiberglass is permeable to RF.  I put the antenna between the headliner and roof panel over the driver seat, and ran the cable down the A-pillar under the trim.  Voila! invisible antenna.  Works great.  Rather than the power supply that plugs into the lighter socket, I ran wiring over to the fuse panel accessory power.  So, there is no exposed wiring.  Hope that helps.