Where is the location of the Oil Pressure Gauge Switch on a 1994 buick regal on 1994 Buick Regal

The part is BWD S4078 Transmisor/Transmetteur sender

Asked by for the 1994 Buick Regal
1 answer
Just above the oil filter pointing toward rear of car. Special socket needed to replace it! Do not know your skill level so suggest getting a mechanic or car savvy person to do work, easily damaged componet(s)!