Retrofit AMP meter

Here's an old thread, but the meter used "may not" be available. However this thread should give you lots of ideas. Please look through the entire thread, as it covers a lot of ground

Ammeter to Voltmeter...who does it?

The problems with the "full current" ammeter these girls use is several:

1...The bulkhead connector terminals were never intended for that much current. I used to perform HVAC/R service, and part of that was heat pumps/ electric furnaces. They use similar terminals in the heating element wiring. Those DO fail, and they only draw about 20-25A per heater element

2...The ammeter itself can become loose, build heat, and further destroy itself

3...The wiring is no where near large enough for 55+ amp alternators

Along about 70-72, "Ma" started equipping stuff like the C barges with "external shunt" ammeters, which are fed with small wire. The problem with these in Ford / GM/ Chrysler is that they can often be "numb" meaning they do not respond to "small" loads like headlights