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2011 NISSAN Towing Guide
23
HITCH BALL
A ball that connects the trailer to the tow vehicle hitch and provides the
means by which the trailer pivots during cornering. Available in a number
of sizes and weight capacities, it must correspond to the trailer coupler
size, and have a sufficient capacity rating for the trailer being pulled.
RECEIVER HITCH
A frame- or structure-mounted hitch with a receiver that allows removal of
the ball mount.
SAFETY CHAINS/CABLES
Provides an emergency connection between the tow vehicle and the trailer,
should the trailer become disengaged for any reason.
SURGE BRAKES
Hydraulic-type braking system activated by inertia. As the tow vehicle
begins to brake, the trailer pushes against the hitch ball, consequently
activating the trailer brakes.
TRAILER TONGUE/COUPLER
The part of the trailer that extends forward to meet the tow vehicle, and also
carries the coupler assembly.
TRAILER TONGUE
LOAD
The amount of trailer (conventional) weight pressing down on the tow
vehicle hitch.
WEIGHT-DISTRIBUTING
HITCH SYSTEM
Type of hitch system that helps shift the trailer tongue weight to all trailer
tires and the tow vehicle front tires. Strongly recommended when towing
trailers with a Maximum Trailer Weight greater than 5,000 lbs.
WIRING HARNESS
Provides an electrical connection linking the tow vehicle’s electrical system
to the trailer’s system.