I have checked the wiring to the oil pressure switch on the lb2204 that I have been looking at buying and it is all intact. So now I would like to hook up a mechanical guage to see the actual pressure. my question is what are the threads at the sending unit? Are they metric or standard pipe thread? Will a generic oil pressure guage that you buy at the auto parts store have the right fittings? I know this is probably a dumb question, but I have never put a guage on a foreign made engine. Thanks for any help-Scott