Nice, lunaticTR! My pet peeve with dash-mounted voltmeters is that they're either too hard too see or too distracting. On my F800ST I have the same warning light that JRWooden mentions, but I disabled the green so that I don't have to keep seeing a bright green light when everything is OK. I wouldn't mind having a more precise readout, though.
'05 R12ST, '08 F800ST [ex: '04 GS Adv, '99 KLR 650, '88 Vulcan 750]