[Troy D.]

What you have there is the powered motorcycle mount for the Zumo 595 - interesting! Did the bike come with the gps unit itself? And I assume the cradle is still up on the bars.. hopefully? That would be unfortunate if the previous owner left that behind and took the unit haha.

Here's a link to the part in question:
zūmo 595 - Powered Motorcycle Mount

 

[Troy D.]

Here's the diagram for the exact harness on your bike. There are features built in to the zumo that make use of these connections.

The link I posted previously has more info about the harness and zumo device if you need it.