you have an aftermarket radio right? if so, whats happening is that your aftermarket radio doesnt come equipped to handle a 'diversity' antenna system. (a diversity antenna is basically two antennas constantly switching back and forth to the antenna that can deliver the strongest signal.) There is a company in the process of making an adapter that will still allow you to maintain a diversity system and link it to aftermarket radio but they have been in "r&d" for quite some time now... your other options are to rip one of the diversity antennas and its driver out of your car, install a regular antenna to the aftermarket radio somewhere in your car or have a regular antenna/power antenna installed but that is an extreme option. Hey, you could always go satelite radio

any other questions, dont hesitate to email me - Manny