Trailer Stop, Turn Signal And Hazard Lamp Operation
WARNING: This page is about a different car, the 2005 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
The trailer stop, turn signal and hazard lamps are all controlled by the trailer tow control unit. The trailer tow control unit regulates the amount of voltage supplied to the trailer lamps. If either turn signal or the hazard lamps are turned on and the trailer tow control unit gets a brake lamp input, the trailer tow control unit supplies more voltage to the trailer lamps to make them illuminate brighter.
Stop lamp input is supplied
- To trailer tow control unit terminal 8
- Through rear combination lamp LH.
Left turn signal and hazard lamp input is supplied
- To trailer tow control unit terminal 4
- Through rear combination lamp LH.
Right turn signal and hazard lamp input is supplied
- To trailer tow control unit terminal 9
- Through rear combination lamp RH.
Based on the stop lamp, turn signal lamp and hazard lamp inputs to the trailer tow control unit, power is supplied to trailer stop/turn lamp LH
- Through trailer tow control unit terminal 2
- To trailer harness connector terminal 2.
Power is also supplied to trailer stop/turn lamp RH
- Through trailer tow control unit terminal 6
- To trailer harness connector terminal 6.