An Engine Wiring Harness is used to organize individual wires into a single unit to efficiently transmit electrical power and signals using connectors and terminals. The wiring harness protects the cable assembly from abrasion, extreme temperatures, moisture, dust, and other factors.Attributes:• Help minimize the risk of loose connections, short circuits, and electrical interference• Work well in tight spaces where a large number of wires on separate connectors won't fitApplications:An Engine Wiring Harness is used to securely route the wires and cables used to connect the jacket water heater, thermostat switch, and left-hand side lube oil heater.