Those FM transmitter things are the work of the devil. My Sirius is factory installed so I don’t deal with that now, but in my last vehicle, I had a DVD unit that used that to do the sound. It got so bad that I ended up going to a car stereo shop to have it fixed. If I remember right (unlikely) what they did was run a wire from the DVD transmitter directly to the vehicle’s antenna. Someone will be along shortly to explain why I must be wrong as what I’ve described would clearly lead to immediate vehicle anialation, but that’s what I remember.
Anyway, they fixed the problem for a minor charge. Well worth it.
