J;
Okay; "hall effect type" that measure the current flow (charging system) W/O a direct connection. Measuring the starter's 'current draw' has/is done (decades) that way also, but wasn't part of the discussion.
H;
Mr. Modiol wanted to use his (orginal) ammeter built in 1948 and It's dangerous to do that with a 'high amp' alternator. To do this he needs a 30A source, Two of which I provided.
You asked for an opinion on the 'Hall effect' device, which I also provided.
Good luck with your Roadster.
