Hobbs Meters

[pschauss]

As I suspected, my engine hour meters are not working so I need to determine whether the problem is in the meters or the wiring. If I turn on the ignition should I see voltage across the wires which feed them or is there some sensor which detects that the engine is actually running?

Thanks,

[Tony Meola]

Peter

The meters are wired hot to the ignition switch. Turn on the switch they start ticking. Does not matter if the engines are running or not.

[Bruce]

In some cases they are wired thru an oil pressure switch. This way if the key is left on, it doesn't run up the meter without the engine running.

[pschauss]

I checked mine with a test lamp and they are wired directly to the ignition switch.

I have ordered new meters but, of course I now have no idea how many hours are on my engines. The port meter says 1400 hours and starboard says 1800.

[Tony Meola]

Peter

Unless they ran on one engine for 400 hours I would say they are closer to 1200 hours of course unless someone changed the meter.