The ammeter is my 1966 Vette was not functioning, no movement at all, so I attempted to repair it.
1st - I verified voltage at both terminals that connent to the ammeter.
2nd - Measured the ammeter resistance for a possibe short - measured good.
3rd - removed ammeter - using a 1.5 Volt D size battery & flashlight bulb, I connect the new ammeter in series. The meter read > 10 amps. Ammeter appear to be working!
4th - To test the ammeter prior to re-installation, I used jumper wires & turned the key on & ran the fan. The ammeter does not move! I started the Vette & still no movement.
5th - Using a Voltmeter I verified >13 volts @ the battery w/ the alternator running.

What am I doing wrong?
Thanks in advance for helping!
Andy

this is a


Mercedes Forum.. You want a Corvette based forum misguided searcher

I know this is a Mercedes Forum, but something you said seems wrong: " 3rd - removed ammeter - using a 1.5 Volt D size battery & flashlight bulb, I connect the new ammeter in series. The meter read > 10 amps. Ammeter appear to be working!"

How can you get 10amps out of a "D" cell?

I'm no pro but that just doesn't seem doable.

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1993 190E 2.6 135k
1989 Ford Thunderbird SC 5 Spd 79K