Quote Originally Posted by F6Bster View Post
The power cable from my 395 goes down the handlebar and then under the plastic to get power under the left cubby. Mine has lots of room under the cubby. Works well. Switched power. Audio feed via BT.
That's how I had the 660 installed. I followed the same route under the left handlebar trim and back around under the left cubby with the 595 to the same switched power accessory connection. The Garmin audio out mates to the OEM 3.5 audio jack for mp3 tunes and turn by turn instructions through the headset or speakers.

Since I had eventually planned to install a power port in the left cubby for a USB charger I thought this provided plug might do the trick instead. Otherwise it does feel like a 6th finger just hanging there.