FM Modulator for Sirius Satellite Radio

whenever you want to listen to the regular radio, you have to turn off the jensen unit in order to get standard FM broadcasts.  Sometimes you hold down the on button til the display goes blank, other times there's a separate off button.  Check the owner's manual if you need help turning it off.  Once it's turned off that should let you tune in to any fm station.

Only thing I can really think of is to make sure the modulator is not defective, and you can run a switch to the modulator's power wire to manually turn it on and off.  If you go that route, make sure before you put everything back together that you verify that turning off the power via the switch does in fact give you radio reception.  Cuz it might not help at all if there's something wrong with the modulator itself.