2500 4x4 Pickup L6-359 5.9L DSL Turbo (1995)
Oil Pressure Warning Lamp: Description and Operation
The case grounded oil pressure sensor is a variable resistor that connects to circuits G60 and G6. Circuit G60 connects to the oil pressure gauge. Circuit
G6 connects to the oil pressure warning lamp.
Circuit F14 connects to the instrument cluster at the left connector and supplies battery voltage to oil pressure lamp.
When the oil pressure is below a predetermined level the engine oil pressure switch CLOSES completing a path to ground causing the lamp to
illuminate.