Getting ready to put the boat in the water for this year of fishing and of course the surprise problems that happen every time I let the boat sit too long. No oil pressure at dash for both engines. I will assume that at this point the oil sludged up and is blocking oil pressure because the oil alarm on both engines seem too be ok, turn key on and all 3 alram lights come on, test alarm switch sounds the alarm and when engines start light goes out. I would like to convert to mechanical murphy gauges with alarm switchs. Not sure what to do with the wires going to the sending units. Our local speedo tach shut its doors so I dont know who carries Murphy gauges locally. Anybody convert there oil pressure sending units over to mechanical gauges? Any ideas are always helpfull.