I've got an '04 525i and a SIRIUS Starmate unit that I move between several of my vehicles. Is there any way to tap into the built in SIRIUS antenna instead of the magnetic antenna that came with my unit? I don't want to permanently mount the magnetic antenna on teh outside of the car and it gets bad reception on the inside.

Bump...

I've got an '04 525i and a SIRIUS Starmate unit that I move between several of my vehicles. Is there any way to tap into the built in SIRIUS antenna instead of the magnetic antenna that came with my unit? I don't want to permanently mount the magnetic antenna on teh outside of the car and it gets bad reception on the inside.

Interested in knowing this myself. I would like to have to put sirius in my car but: (A) Didn't want to spend $450 for factory install, (B) Don't want to put another receiver onto the car, and (C) be able to move it easily to my other car when necessary.