Originally Posted by E92Vancouver
There is only 1 wire for power. The Garmin takes power and ground off of the radio harness. It is all plug and play.
But i did not buy garmin. I got the new C620T from MIO. I liked the 3D option they have. And there are a decent phone connection to. Power is here a mini USB - only 2 wire. So it could be an easy installation under the armrest. And then you can also hardwire a soundcable while you are at it.