I'm confused. I just finished installing an fm modulator in my 2005 V50 (w/premium sound) using the widely discussed 9V tap method. It sounds OK, but not great. The thing that blows my mind is that if I unplug the antenna feeds from the modulator, NOTHING HAPPENS! The reception doesn't change at all! Similarly, if I break the connection between the two wires I extended from the 9V tap, neither my fm nor am reception change at all. This makes no sense! Is the antenna location actually somewhere else, and not in the rear passenger side window??