1998 Ford Expedition Owner Guide 1st Printing - Page 119

Driving If your vehicle is equipped with the optional heavy duty trailer tow wiring, it is pre-wired for trailer towing. An electrical connector is provided under the instrument panel for installing a customer-supplied electric brake controller. Another electrical connector is provided at the hitch. This connector provides power to the trailer for taillamps, stop and turn lamps, back up lamps, battery charge, electric brakes (when a customer provided controller is installed) and ground. The kit included with your vehicle provides you with adaptors to attach the brake controller and convert the hitch connector for Class I trailer usage. Trailer towing table (with heavy duty trailer tow option) GCWR (Gross Combined Weight Rating)/trailer weights Rear axle ratio 3.31 3.31 3.73 Maximum GCWR 4 (11 5 (12 6 (13 990 000 443 000 123 500 kg lbs.) kg lbs.) kg lbs.) Trailer weight range (0 - maximum) 0-2676 kg (0-5 900 lbs.) 0-3 039 kg (0-6 700 lbs.) 0-3 628 kg (0-8 000 lbs.) Engine Tire size 4x2 4.6L 5.4L 5.4L 40.6 cm (16 in) 40.6 cm (16 in) 40.6 cm (16 in) 119