Allright i have a sony headunit with a cd changer hooked up through the xa-300 auxilary adapter. http://www.crutchfield.com/S-KyEKDopg9Pv/cgi-bin/ProdView.asp?g=50900&I=158XA300
now im trying to add XM to it but i can only get the xm to work thru the cd changer bus or the cd changer to...