Amp Gauge Question

[SandburRanch]

This old tractor amp gauge looks old enough to be 6 volt and it isn't marked. Are amp gauges volt specific? If it came from a 6 V system would it destroy it to test it with a 12 V system?

 

[Travelover]

It will work the same on 6 or 12 volts. Amps is amps

 

[BobRip]

It will work the same on 6 or 12 volts. Amps is amps

That's right.

 

[CurlyDave]

It will certainly work on either, but voltmeters, which have several advantages over ammeters have been more highly recommended for decades.

No high amperage wires run through the dashboard with a voltmeter, and best of all, a voltmeter actually shows you the current status of your battery rather than just showing whether it is charging or discharging at the current moment.

A voltmeter can be used for troubleshooting far more effectively than an ammeter.

 

[bjr]

Okay, I agree about the volt meter but, I'm thinking a person can kinda tell if all the glo plugs are working with the amp meter. bjr

 

[Travelover]

I think both would be ideal. It is nice to see how much charge your battery is drawing to get an idea if it is low in charge.

 

[Reg]

Just going off topic....
"Modern" cars and trucks have a standard connector (OBD II port, since about 1996) for diagnostic trouble codes.
Is there something similar on (relatively recent) cat 1 and 2 tractors ?

This thread stimulated the thought that I could use a scan-gauge or similar multiple gauge to read out much more than just volts - as I do in my truck.