HI,
Navigator VI can be used, you need a Navigator V cradle with side buttons for control and a holder. I combined two from Wunderlich that go under the screws on the handlebar cradle and a GPS holder. The power supply can be pulled out from the connector under the gas tank, or under the left side pannel.
It didn't suit me, so I ended up using the SP Connect holder with anti-vibration and charging pad for regular handy.