Lincoln Electric 2006 Navigator Owner's Manual page 265

Tires, Wheels and Loading
to tail lamps, stop lamps, and turn lamps. See the trailer towing chart for
the trailer towing weight recommendation.
Trailer towing (optionally equipped trailer tow package):
The optional trailer tow package includes heavy duty trailer tow wiring.
Both a Class I (4-pin) and IV (7-pin) trailer electrical connector are
provided. Under the instrument panel a electrical connector is provided
for a customer supplied aftermarket electronic brake controller. For
installing a customer supplied electronic brake controller, a electrical
jumper harness and trailer tow electrical instructions are included with
the optional trailer tow package.
The kit containing a electrical jumper and trailer tow electrical
instructions may be purchased from any authorized dealer (Part number
4L1Z-14A348-AA)
Note: Before towing a trailer, make sure the trailer brakes (if equipped)
and lamps are properly connected and functional. Electronic trailer
brakes (if equipped) refer to the instructions provided by the
aftermarket electronic brake controller manufacture for determining
trailer brake functionality.
Rear axle
Engine
ratio
5.4L with
standard
All
trailer tow
package
5.4L with
optional
All
trailer tow
package
5.4L with
standard
All
trailer tow
package
264
2006 Navigator (nav)
Owners Guide (post-2002-fmt)
USA (fus)
Trailer weight range
Maximum GCWR -
lb. (kg)
4x2
11900 (5397)
14500 (6576)
4x4
12200 (5533)
(0 - maximum) -
lb. (kg)
0–6000 (0–2721)
0–8600 (0–3900)
0–6000 (0–2721)