Wiring Hr.Meter to only run with engine,not switch ;need help

[JL57]

Looking to wire hr. meter to run only while engine is running. Not just when switch is "on"<br />I remember something on a forum about running it to oil sender/gauge. Can anyone help with specifics?<br />Thanks

 

[Don S]

Re: Wiring Hr.Meter to only run with engine,not switch ;need help

You would need a Normally Open oil pressure SWITCH, not sender. With a PSI of around 5 psi that closes the switch.<br />Hook a purple wire to one side of the switch and the other to the + terminal on the hour meter.<br /><br />But why would you want to go to all the trouble? There is no reason for that kind of accuracy. It's more for the maintenance schedule than anything else, and 5 or 10 hours one way or the other isn't going to make any difference.

 

[Bondo]

Re: Wiring Hr.Meter to only run with engine,not switch ;need help

And,........<br /><br />Why would you want the key "On",........ Without the Motor Running....??......??......??....<br />That turns "On" more than Just the motor,+ the Radio...............<br />That's what "Acc" is for.........<br /><br />Powering the Hourmeter with the Electric Fuelpump Circuit,.. If so Equiped,... Will do Exactly what Don explained........