Ok I installed my Sirius antenna on the back dash. However, the red tape that comes with the kit is not strong enough to hold the cable down on the dash material. And the dash is not metal so the magnetized antenna itself won't stick without moving around when driving. I used one piece of Scotch tape to hold the cable down and it works. Never had a problem with reception. The black antenna doesn't match the color of the car well, so I didn't want to put it on the roof.