Ampere Meter Wiring Diagram. Crimp a round wire terminal onto the end of the black negative wire - coming from your amp gauge. A wiring diagram is a simplified traditional photographic representation of an electric circuit.
Ammeters Measure Electrical Current. You called this black and red cooler wires positive and negative for DC Direct Current or you can also called these coolers neutral and Phase for AC Alternative Current. Be aware that these are general diagrams using standard test switches which may not match some Utility standards in their configuration and are for reference only.
Ammeters Measure Electrical Current.
If ammeter shows a positive charge when starter is engaged reverse connections on back of ammeter. There is a connector with thick wires and connector with thin wires. Do not deviate from assembly or wiring instructions. In ammeter designs external resistors added to extend the usable range of the movement are connected in parallel with the movement rather than in series as is the case for voltmeters.