P311-12B7A2C W0133-1614266 New
- This oil pressure switch is "Factory Update" version. It acts like an "On/Off' switch with an in-line resistor that transmits a reduced signal to the gauge. The "On/Off" action of the updated switch is like that of an "Idiot Light". Use LMD 5640AB to have the pressure gauge work as normal / original. JLM 20791 is smaller than the original.