Ammeter for 12 volt model a

[doug.nichols]

Is it necessary to install a 12 volt ammeter in a model a that has been converted from a 6 volt system? Or, will the original ammeter work ok?

[Jemelton#]

When measuring Amperes, Voltage isn't an issue (except for limiting high voltages).
Amperage is a measure of flow, while voltage is a measure of pressure.
an original ammeter will work on a 12v system as long as you keep the amps below the limits of the meter.

[doug.nichols]

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Thank you.