The ammeter can handle the 61 amp alternator, but I would be concerned about the 94 amp alternator.
With a 94 amp alternator or larger, you will want to increase the wire size going back to the battery. I would be looking at a #6 or larger if you go more than 94 amps. If you do what Christopher did, (one wire), you can route a separate large wire directly to the battery.
Instead of an ammeter, you can install a volt meter.
Jim
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