[PDF] HILUX Electrical Wiring Diagram - Tuning Concepts information on the electrical system of the HILUX. Applicable models: KUN15, 16, 25, 26 Series HILUX ELECTRICAL WIRING DIAGRAM 4 Rear Combination Light RH R 7 R 6 Rear Combination Light LH High Mounted Stop Light H17 Light Failure Sensor Stop Light SW ABS ECU S 6 Toyota Troubleshooting: No Tail Lights | It Still Runs Honk the horn to make sure there is electricity in the battery. If the horn doesn't work, replace or recharge the battery then check the tail lights. If they still don't work then unscrew the Phillips head screws that secure the tail light lens to the car and remove the tail light lens. Repeat the process on the other tail light.