RCCI voltmeter conversion gauge
RCCI takes the stock gauge, installs a new movement in it, and repaints the needle. This is what it looks like when you get the gauge back. I've written this up over at the blog at wyowanderer.com/adding-a-voltmeter-to-the-ford/
I've uploaded a video over at Youtube at youtu.be/U7LD3AXA98s that describes what the install actually accomplishes.