Can Ammeter Run Parallel?

[MonzaRacer]

Thats what hes trying to make but the type of system he has wont do it the meter is too heavy internally. If you want to find a volt meter ,gut it and fasten it behind the factroy guage face, ad a pin slighty under the center point and make sure it "looks" like it has a amps guage and is "charging" I talked to a company that does retoreation and they do this every day but its time consuming. Thier big problem is making the fac ammeter "look" like its charging and show a certain charge as its a volt meter.
Good Luck