2009 Hummer H3T Owner's Manual - Page 235

Driving Your Vehicle Trailer Brake Control Wiring Harness The trailer brake control wiring harness is located under the instrument panel to the right of the steering column. The wires are taped to the harness that goes to the courtesy light under the instrument panel. The harness has the following wires: 4-53 Trailer Recommendations Subtract the hitch loads from the Cargo Weight Rating (CWR). CWR is the maximum weight of the load the vehicle can carry. It does not include the weight of the people inside, but you can figure about 150 lbs. (68 kg) for each passenger. The total cargo load must not be more than the vehicles CWR. Weigh the vehicle with the trailer attached, so the GVWR or GAWR are not exceeded. If using a weight-distributing hitch, weigh the vehicle without the spring bars in place. The best performance is obtained by correctly spreading out the weight of the load and choosing the correct hitch and trailer brakes. For more information see Towing a Trailer on page 4-42. Red Wire: AUX B+ Black Wire: Ground Light Blue Wire: Brake Signal Dark Blue Wire: Trailer Brakes