2000 Cadillac DeVille Owner's Manual - Page 264

Safety Chains You should always attach chains between your vehicle and your trailer. Cross the safety chains under the tongue of the trailer so that the tongue will not drop to the road if it becomes separated from the hitch. Instructions about safety chains may be provided by the hitch manufacturer or by the trailer manufacturer. Follow the manufacturer's recommendation for attaching safety chains and do not attach them to the bumper. Always leave just enough slack so you can turn with your rig. And, never allow safety chains to drag on the ground. Trailer Brakes Because you have anti-lock brakes, don't try to tap into your vehicle's hydraulic brake system. If you do, both brake systems won't work well, or at all. If you tow more than 1,000 lbs. (450 kg), use trailer brakes. Be sure to follow the instructions that come with the trailer or from the brake manufacturer. Be sure to read and follow the instructions for the trailer brakes so you'll be able to maintain them properly. Trailer Wiring Harness (Option) If your vehicle is equipped with the trailer towing package, your vehicle has additional wiring to attach to a trailer's wiring harness. Contact your dealer for proper installation. 4-39