Quartz Hour Meter Wiring Diagram. Engine hour meter wiring diagram. Connect a wire from pin #5 to a constant +12 or +24 single phase, 3 wire, /v system. Form 12s Meter Wiring Diagram Learn Metering from www.learnmetering.com A wifi iotmeter can be wired to a vehicle the same way. Diagram d proper wiring of the […]