The amp meter is an older in-line meter, without the inductive pickup. It gets connected in series on whatever is being tested. If it's for testing starter current, you disconnect the cable going from the battery to the starter, and connect the meter in the circuit. How high does the ampmeter read? If it's under 200 amps, it's not for the starter, but the generator. I'm thinking that the Chevy shop manuals show how to hook up these meters.
