2005 Ford F250 Owner Guide 3rd Printing - Page 172

Tires, Wheels and Loading 3. GAIN setting display: Shows the current GAIN setting. This will illuminate when a trailer is connected, flash if the trailer becomes disconnected, or remain off if no trailer is connected. 4. OUTPUT bar graph: When the vehicle's brake pedal is pushed, or when the manual control is activated, green bar indicators will illuminate to indicate the amount of power going to the trailer brakes relative to the brake pedal or manual control input. 5. Manual control lever: Slide the control lever to the left to activate power to the trailer's electric brakes independent of the tow vehicle's brakes (see the following Procedure for adjusting GAIN section for instructions on proper use of this feature). If the manual control is activated while the brake is also applied the greater of the two inputs determines the power sent to the trailer brakes. • Stop Lamps: Activating the TBC manual control lever will illuminate both the trailer brake lamps and the tow vehicle brake lamps (presuming proper trailer electrical connection). Pressing the vehicle brake pedal will also illuminate both trailer and vehicle brake lamps. GAIN The GAIN setting is used to set the TBC for the specific towing condition and should be changed as towing conditions change. Changes to towing conditions include trailer load, vehicle load, road conditions and weather. The GAIN should be set to provide the maximum trailer braking assistance while ensuring the trailer wheels do not lock when braking. Locked trailer wheels may lead to trailer instability. Procedure for adjusting GAIN: Note: This should only be performed in a traffic free environment at speeds of approximately 20 - 25 mph (30 - 40 km/h). 1. Make sure the trailer brakes are in good working condition, functioning normally, and properly adjusted. See your trailer dealer if necessary. 2. Hook-up the trailer and make the electrical connections according to the trailer manufacturer's instructions. 3. When a trailer with electric brakes is plugged in, the trailer connection indicator will illuminate green on the TBC and the GAIN setting display will illuminate. 4. Use the GAIN adjustment (+/-) buttons to increase or decrease the GAIN setting to the desired starting point. (A GAIN setting of 6.0 is a good starting point for heavier loads.) 172 2005 F250/350/450/550 (f23) Owners Guide (post-2002-fmt) USA_English (fus)