mazda CX-9 Trailer Hitch User Guide
- June 16, 2024
- MAZDA
Table of Contents
mazda CX-9 Trailer Hitch
Congratulations on Your Purchase of a Genuine Mazda Trailer Hitch
Your new trailer hitch has been specifically designed for your CX-9 to safely tow up to weights shown in the vehicle owners manual when properly attached and secured.
This trailer towing system is also equipped with a trailer lighting power
converter.
The supplied converter is designed to an industry standard, being able to
accommodate up to 9 amps of current draw.
The A-B-C’s of Draw Bars and Ball Mounts
One way to even out a load is to select the best fitting ball mount. Ball
mounts vary by weight rating, shaft length and rise / drop measurements. Your
CX-9 receiver hitch will accept a class II mount with a precise rise or drop
to suit your particular application.
WARNING
Selecting the proper ball mount for your towing application is important. For best towing, your trailer should always be set up to tow on a level plane.
Ball Mount Length
The ball mount length is the distance from the center of the ball hole to the center of the retaining pin-hole. Ensure that there is no risk of trailer- coupler contact with the CX-9 bumper.
Ball Mount Rise
A = Distance from the ground to bottom of trailer coupler
B = Distance from ground to top I.D. of the receiver tube opening
C = Amount of rise necessary to keep the trailer level
Ball Mount Drop
A = Distance from the ground to bottom of trailer coupler
B = Distance from ground to top I.D. of the receiver tube opening
C = Amount of drop necessary to keep the trailer level
TROUBLESHOOTING GUIDE
TRAILER HITCH WIRING KIT
TOOLS REQUIRED
TEST LIGHT
Right Turn / Stop Green
Left Turn / Stop Yellow
Tail Brown
Ground White
METHOD
- Attach the test light ground connection to the male pin of the Harkness’s 4-flat connector
- Probe each of the female pins individually to confirm correct circuit operation
- Note:
Standard Tail/Marker Lamps are rated at .6 amp ea.
Turn Signal and Stop lamps are rated at 2.1 amp ea.
Trailer Lighting Power Converter
Included with your trailer hitch is a power converter with a 4-way flat electrical connector to accommodate standard trailer lighting. This converter is designed to an industry standard and is fused with a 15 amp fuse.
Overload Protection
The power converter has separate protection of 9 amps per output channel to
trailer lights on the marker lights and left / right brake lights and turn
signals.
For example, if the marker lights draw excessive current, the brake lights and
turn signals will continue to function normally. After power is removed
(lights turned off) for several minutes, the power converter will reset
itself.
WARNING
The trailer tow battery feed and rear outlets share the same fuse. As a result only one function can be used at a time. Failure to do so will result in a blown fuse, disabling trailer tow functions and rear outlet functions. This will cause the trailer to have no trailer lights.
Additional Assistance
Electrical problems other than those listed above may be resolved by referring to the troubleshooting guide on the back of this card. Please reference the vehicle owner’s manual or visit your local Mazda dealer for additional information concerning the trailer hitch.
