If you are looking to run your Garmin Zumo XT2 on multiple machines, you will need this wiring harness. This is the same wiring harness that comes in the box with your Zumo XT or Tread 5.5. In addition to this you will need an additional wiring harness and a mount which you can find links to below.
For the Zumo XT / Tread 5.5 Wiring Harness: CLICK HERE
For the Zumo XT / Tread 5.5 mounting bracket: CLICK HERE