Originally Posted by Arth
Okay so I basically just did the same thing you did and I am confused. I have a 2009 Dodge Ram Laramie that had the REN unit in it. The nav unit I bought from a fellow member as well has three inputs on the back. One is for AM/FM, Two is Siruis Sat, and Three is the GPS. But for some reason it's lost. Maybe I need to replace the GPS antenna too or no? I don't know, any advice would be great.
If you have 3 antenna inputs it sounds like you have the RER (up to 2010) unit. Besides hooking up the am/fm antenna, as well as your Sirius satellite antenna, you will need to purchase the gps antenna and add it in. From what I understand, it can be mounted in behind the radio unit under the dash. The gps antenna is readily available from oemautopartsco.com.
Hope that helps