On the roof of my 04, in the center, about 2ft from the rear of the truck, is what appears to be a hole in the roof, with a rubber plug. It almost looks factory. Is this supposed to be there? and if so, for what purpose?

 

Did the previous owner have SAT radio and thats the hole for the antenna?

 

Hi, click this link, scroll about 1/3 of the page down and all will be revealed

http://www.discovery2.co.uk/naviagtion.html

 

Mine has it also

 

Thank's forthe quick response, I was thinking of using that for my xm antenna.The rain gutter makes a clean install difficult with the wire.