A real oil pressure gauge , with direct copper line to the engine . Neighbors are white collar types with modern cars . Not mechanical minded from what I know of them .
Here are three gauges that I added to my truck . Voltage , water temperature and oil pressure .
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Stewart Warner, good gauge. Anyway, I was thinking there was a chance it may be some form of murphy switch.........even though I know you have spark, which overrides the theory!















