Does anyone know what the difference is between the 1 pin oil pressure sender used on the W126 and the 2 pin sender used on the W140? The W126 sender grounds through the oil filter housing. Does the W140 sensor use the 2nd pin for a ground, or is it a connection for the low oil pressure light in the cluster?

Thanks,

-J

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.