1974 Plymouth Duster no power through bulkhead.
Most aftermarket ammeters work the same as the factory. Power from the battey flows through them.
At one time these were super common 'cause most Chevies were getting warning warning lights and hot rodders wanted their gages.
So disconnecting should have stopped the power flow.
Possibilities are:
a. You connected the feed wires together
b. The ammeter is a shunted ammeter which internally has high resistance. The power flows around it through an external shunt.
c. Its a voltmeter which has very high resistance. No power flows through voltmeters.
d. Someone connected the ammeter to ground creating a short. A dangerous short to boot.
Most aftermarket ammeters work the same as the factory. Power from the battey flows through them.
At one time these were super common 'cause most Chevies were getting warning warning lights and hot rodders wanted their gages.
So disconnecting should have stopped the power flow.
Possibilities are:
a. You connected the feed wires together
b. The ammeter is a shunted ammeter which internally has high resistance. The power flows around it through an external shunt.
c. Its a voltmeter which has very high resistance. No power flows through voltmeters.
d. Someone connected the ammeter to ground creating a short. A dangerous short to boot.