Stop in for a cup of coffee

halifaxhops said

I have seen those, no idea what these fit even the oil pressure sending units. 3 spades a shut off switch?

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prossibly. my wagoneer uses a gage pressure plus a seperate shut off pressure sending unit - IIRC its for the choke assist heater. So a vehicle with a oil pressure light instead of a gage maybe uses what you got there.

The fat PVC maybe a GM application.