I have purchased a water temperature gauge and sender and a oil pressure gauge and sender (Veethree Instruments - Teleflex Heavy Duty). I have finally removed the plugs on the Yanmar 3GM30F. I assume the Yanmar threads are metric and the sender units are SAE. The temperature sender will actually screw in a ways. I could not get the pressure sender to screw on at all. I need some help in locating adapters to mate the senders to the Yanmar. Any help on what to get and where to get it would be much appreciated.
Jacques
Jacques