I found links to these very informative posts on VMF, but they actually reside on allfordmustangs.com. He talks about what the ammeter actually is and how to improve the sensitivity. I have edited the attachment to include an earlier post by the same author, and the attachment is now 9 pages long. Since I plan to switch to Dakota Digital retro tech, I have no need to make the modification, but for those of you that want to actually have a useful (or working) ammeter you will definitely find the attached Word file useful. Kudos to Ivy66GT who went to all the trouble to figure this out.