Mazda 2006 B-Series Owner's Manual page 135

Using a step bumper
The optional step bumper is equipped with an integral hitch and requires
only a ball with a 3/4 inch (19 mm) shank diameter. The bumper has a
2,000 lb. (907 kg) trailer weight and 200 lb. (91 kg) tongue weight
capability.
The rated capacities (as shown in this guide) for trailer towing with the
factory bumper are only valid when the trailer hitch ball is installed
directly into the ball hole in the bumper. Addition of bracketry to either
lower the ball hitch position or extend the ball hitch rearward will
significantly increase the loads on the bumper and its attachments. This
can result in the failure of the bumper or the bumper attachments. Use
of any type of hitch extensions should be considered abuse.
Trailer tow connector
The trailer tow connector is located
under the rear bumper, on the
driver's side of the vehicle.
Refer to the following chart for information regarding the
factory-equipped trailer tow connector:
Trailer tow connector
Color
1. Dark Green
2. Yellow
Function
Trailer right-hand
turn signal
Trailer left-hand turn
signal
Tires, Wheels and Loading
Comment
Circuit activated when brake
pedal is depressed or when
ignition is on and right-hand
turn signal is applied.
Circuit activated when brake
pedal is depressed or when
ignition is on and left-hand
turn signal is applied.
1
2
3
4
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