Trailer Stop Lamp Operation

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

The trailer stop lamps are controlled by the electric brake. The electric brake receives stop lamp switch signal when the brake pedal is pressed.

When the brake pedal is pressed, power is supplied

Through electric brake (pre-wiring) terminal 3
To trailer connector terminal 3.