I installed a Sky-fi 2 in my W350 about 6 months ago - best money I've ever spent! I hid the antenna wire behind the trim panel in the left rear corner of the cab, then above the headliner to the cargo lamp. I ran the wire out of the top of the cargo lamp and stuck the antenna on the roof about 8 inches forward. I mounted the "dock" that holds the receiver unit inside of the console on the right side so that with the lid open, I can see the display. I use the remote control that came with the unit 'cause it's easier than trying to push the buttons when you're driving! It's not the perfect setup, but I wanted to have the unit hidden and did not want the dock stuck somewhere on the dash.