i have just installed my sirius stilletto in my car. We all know that the 2005-06 don't have aux input and the Fm MOD has crappy sound in my opinion. So i have searched the web and found this on ebay

2005-2006 CHEVY COBALT DIRECT iPOD + AUX INPUT W/ TEXT
http://cgi.ebay.com/ebaymotors/2005-...spagenameZWD1V

had to tap into the 12v and the gm lan but it wasn't hard. i also used this bracket for our cars specific and its a bracket for sirius car docks. whis is this

http://www.tss-radio.com/cobalt-20052007-p-4489.html

then i hard wired it into the fuse box with this

http://www.tss-radio.com/sirius-vehi...re-p-4438.html

hardest part was pulling the panels off. you have to use enough force to just pull them off without breaking a clip. here are the finished pics

http://i207.photobucket.com/albums/b...ers25/pic1.jpg

http://i207.photobucket.com/albums/b...ers25/pic2.jpg
i had to drill into the panel to get the wires though. i think it looks clean

http://i207.photobucket.com/albums/b...ers25/pic3.jpg
this is where i placed the antanae on the trunk lid

 

not too bad of an install, good job.

 

All that work for a giant cell phone looking thing hovering near your radio. It looks like a clean install, except some nice heat shrink tubing on those wires would be good. Why not just get an after market headunit with XM built in though?