P.O. didn't leave a whole lot of space to do a round gauge install so i found this: http://www.amazon.com/DROK-Waterproof-Digital-Voltmeter-Monitoring/dp/B00CK3XN3G?ie=UTF8&psc=1&redirect=true&ref_=oh_aui_detailpage_o04_s00 which I put in the stock heated grip switch location. Sure it is turned but fit perfect. At an idle with my heated grips on high and my fogs on I'm getting a listed 14volts. On my decent quality multimeter I get 14.1 so it is close enough for keeping an eye on your charging system.
Nice to see that dash fully utilized.