first time i've tried to link something so i don't know if this will work.
here
will it work?

 

Did some digging found that THIS is the company that produces gauges for US Marine. Might call them and ask.

 

many thanks

 

Swank,

The Faria tachs work off of a magnetic pick-up that is supposed to count the teeth on the flywheel.

They have a switch on the back for different tooth counts.

Faria told me that I would have to go to Cummins to get the magnetic pick-up.

Looking at the bellhousing,I couldn't imagine where you would install it.

I got a different tach...one that runs off the alternator.

Hope that helps,

Vinny