Jeep 2005 Wrangler Owner's Manual page 230

230 STARTING AND OPERATING
A load equalizing hitch is recommended for loaded
trailer weights above 1,000 lbs (454 kg).
CAUTION!
If the trailer weighs more than 1,000 lbs (454 kg)
loaded, it should have its own brakes and they
should be of adequate capacity. Failure to do this
could lead to accelerated brake lining wear, higher
brake pedal effort, and longer stopping distances.
WARNING!
Connecting trailer brakes to your vehicle's hydraulic
brake lines can overload your brake system and
cause it to fail. You might not have brakes when you
need them and could have an accident.
Whenever you pull a trailer, regardless of the trailer size,
stop lights and turn signals on the trailer are mandatory
for motoring safety.
Follow the maintenance intervals in schedule "B" for
changing the automatic transmission fluid and filter, if
you REGULARLY tow a trailer for more than 45 minutes
of continuous operation.