Oil pressure light has started flickering, where is the pressure switch located?

Recently my vehicle listed above the oil light has started flickering. It is completely full on oil. Everything I can find says it's likely the oil pressure switch and I seem to be having trouble locating it. When driving it will cut on for a couple seconds then go back off. It is coming up for time for an oil change and I plan on doing that in the morning and want to just go ahead and replace the pressure switch while at it but cannot locate it or anything online telling me where it's located. Thanks!