Normal Operation
WARNING: This page is about a different car, the 2005 Mercury Mountaineer and 2005 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
The trailer tow electronic brake control module receives power through circuit 1051 (PK/WH) and provides output power to the trailer tow connector through circuit 43 (DB). The trailer tow electronic brake control module is grounded through circuit 1205 (BK). The trailer tow electronic brake control module also receives input when the parking lamps are illuminated through circuit 14 (BN) and the stoplamp switch through circuit 511 (LG) when the brake pedal is applied.