A jumper harness for a work vehicle or agricultural implement is provided. The jumper harness includes multiple electrical conductors, a first connector, and a second connector. The first and second connectors are configured to couple the jumper harness to a wiring harness of an electrical circuit of the work vehicle or the agricultural implement. The jumper harness also includes a light emitting diode (LED) coupled to the electrical conductors, wherein the LED is configured to emit light when receiving electric power.