For 15 psi I got 30.9 ohms, 25 psi 31 ohms, 35 psi 31.3 ohms, 50 psi 31.4 ohms, 60 psi 31.1, 75 psi 30.7 ohms. 

This is the resistance one person measured from an old post on this site. He did say a condensor must be connected for the gauge to operate.

Mercury 1955 with 292 engine.
The question comes to this: Oil sensor B6A 9278-A. 
Does anyone know what microfarads μF (Capacitance) this is?


Drives: Mercury Montclair 1957th

www.mercury1957.com