there is a thread on ppbb.com about this....
you can extend a wire in the A pillar, a white one, and your reception will go crazy. from 15 to 62 feet
heres the thread about that
http://www.ppbb.com/boards/ppbbphp/showflat.php?Cat=&Board=ARCHIVES&Number=1003514&page=&view=&sb=&o=&fpart=all&vc=1