While perusing the internet for bike goodies I found a cool LED battery gauge made by Kuryakyn. I had an actual voltage gauge on my Honda, but I didn't want that on the Nomad. This would fit the bill.
I initially couldn't find a good place to mount it. You don't want to look directly at it or it'll be too bright. When I installed the Phat II risers it opened up a nice location on the triple tree. It's easily visible but not obtrusive or too bright.
I connected it to the lightbar wire for a good source of voltage.