I recently read a post giving a source for a cable to hook a gps to the hd radio aux port. but I can't find it . I tried and am not computer savy enough. any help would be appreciated. I just bought a Nuvi 660 and will use it on my 07 Ultra and wifes car ,, need the big screen, to see!!!!

 

Go to any store that sell electronics and get a double male cord used for I-pods or MP3 players and you're good to go.