• Sep 10, 2025 wiring diagram chevy w3500 truck rs, and pressure sensors. ECU (Engine Control Unit): Manages engine functions based on sensor inputs. Wiring Harnesses: Connect sensors, ECU, and actuators. Ignition System Ignition Switch: Turns the vehicle on/off. Starter Motor: Cranks the engine. Ignition Coil: Provides spar By Bernard Wolf
