Installation Instructions for Mazda CX-9 (2016-Current)

Part Numbers:

• 76020
• 84020
• CQT76020

Tools Required:

• Ratchet
• Torque Wrench
• Safety Glasses
• Sockets: 7/8”, 10mm
• Flat Head Screwdriver
• Exhaust Removal Pliers
• 6” Socket Extension

Wiring Access Location:

• N/A

Step-by-Step Instructions:

1. Remove Lower Trim Panel:

   • Remove plastic expanding fasteners and detach the lower trim panel.
   • Return the panel to the vehicle owner.

2. Lower the Exhaust:

   • Use exhaust removal pliers to pry off four (4) rubber exhaust hangers.
   • Spray with soapy water to ease removal and ensure the exhaust system is properly supported during the process.

3. Fishwire Forward Bolts:

   • Using the fishwire method, insert carriage bolts and spacer blocks through the access hole into the forward attachment holes.
   • Leave the pull wires attached.

4. Fishwire Rearward Bolts:

   • Using the reverse fishwire method, insert the carriage bolts and blocks into the rearward attachment holes.
   • Leave the pull wires attached.

5. Install Hitch:

   • Raise the hitch into position and guide the fishwire ends through the attachment holes.
   • Remove the pull wires and secure the hitch using conical washers (teeth side toward hitch) and 1/2" hex nuts.
   • Ensure no wires or components are pinched between the hitch and the vehicle frame.

6. Tighten Fasteners:

   • Use a torque wrench to tighten all hitch fasteners to 110 lb-ft (149 N·m).

7. Reinstall Exhaust Hangers:

   • Raise the exhaust back into position and reinstall all exhaust hangers securely.

Hardware List:

• (4) 1/2”-13 x 1.75” Grade 8 Carriage Bolts
• (4) 1/2” Conical Washers
• (4) 1/4” x 1” x 3” Spacer Blocks
• (4) 1/2”-13 Grade 8 Hex Nuts
• (4) 1/2” Pull Wires

Safety Notes:

• Frequently check the hitch to ensure all fasteners and the ball are properly tightened.
• If the hitch is removed, plug all holes in the trunk pan or other body panels to prevent water and exhaust fumes from entering.
• Replace any damaged hitch or ball immediately.
• Always follow safety precautions when working beneath the vehicle, and wear eye protection.
• Do not cut access or attachment holes with a torch.

Specifications:

• Hitch Type and Weight Ratings:
  • Weight Carrying (Ball Mount): Max Trailer Weight 4,500 lbs (2,043 kg), Max Tongue Weight 675 lbs (306 kg).
  • Weight Distributing: Max Trailer Weight 4,500 lbs (2,043 kg), Max Tongue Weight 675 lbs (306 kg).
• Complies with safety specifications and requirements for connecting devices and towing systems of the State of New York, V.E.S.C. Regulation V-5, and SAE J684.

Additional Notes:

• Installation time is approximately 30 minutes for a professional installer.
• If you are not comfortable performing the installation, contact a professional installer.

Installation Instructions for T-One® T-Connector for Mazda CX-9

Part Numbers:

• 118278

Tools Required:

• Trim Panel Puller
• Test Probe
• 10mm Socket or Wrench

Step-by-Step Instructions:

1. Prepare the Vehicle:

   • Open the rear tailgate and remove cargo nets and the cargo floor hatch to access the spare tire area.
   • Temporarily remove all floor coverings to expose the spare tire compartment.

2. Remove the Threshold Plate:

   • Using a trim panel tool, carefully pry the threshold plate away from the vehicle, being cautious not to damage any clips.

3. Remove Interior Trim Panels:

   • Partially remove the lower interior trim panels on the passenger side of the vehicle only.
   • Remove several trim panel fasteners to allow panel removal.

4. Connect the T-One® Harness:

   • Locate the vehicle’s trailer tow plug behind the trim panel removed in Step 3.
   • Insert the 8-pin tow plug adapter and lock it into place. Ensure the connectors are fully inserted with locking tabs in place.

5. Ground the White Wire:

   • Locate the existing ground stud near the tow plug connector.
   • Loosen the nut, place the T-One® Connector’s white wire with the ring terminal on the stud, and retighten the nut.
   • Ensure all existing ground connections are still attached.

6. Mount the Black Box Module:

   • Locate a flat surface in an out-of-the-way place and mount the T-One® Connector’s black box module to prevent damage or rattling.

7. Secure the Wiring Harness:

   • Use the provided cable ties to secure the T-One® Connector harness, avoiding areas that may pinch, cut, or melt the wire.

8. Reassemble the Vehicle:

   • Reinstall the plastic trim panels, threshold, storage covers, floor covering, and any other items removed during installation, ensuring no wires are pinched or damaged.

9. Test the Installation:

   • Verify all connections are complete and test the installation with a test light or trailer.
   • For the initial test, reset the vehicle’s electrical system by temporarily removing the key from the ignition.

Safety Notes:

• Overloading circuits can cause fires. Do not exceed stated product ratings or vehicle manufacturer specifications.
• Always wear safety glasses and follow safety precautions during installation.

Manufacturer Notes:

• Refer to the vehicle owner’s manual and the instruction sheet for additional details.
• Store these instructions for future reference.

Installation Instructions for 4-Way to 7-Way Adapter and Brake Control Wiring

Tools Required:

• Phillips Head Screwdriver
• Drill with 3/32" Drill Bit
• 10mm Socket & Ratchet or Wrench
• Wire Crimpers
• Wire Cutters
• Test Light or Multimeter
• Cable Ties

Part 1: Install the 4-Way to 7-Way Adapter

Step-by-Step Instructions:

1. Mount the Adapter:

   • Choose a suitable mounting point on the vehicle, typically near the hitch.
   • Use the provided bracket and screws to secure the adapter.

2. Connect the 4-Flat Plug:

   • Plug the 4-flat connector on the adapter into the existing 4-flat plug on the vehicle.
   • This connection enables tail lights, left turn, and right turn signals.

3. Ground the Adapter:

   • Locate a clean, solid grounding point near the adapter.
   • Drill a 3/32" hole if necessary and secure the white ground wire from the adapter using the provided screw and eyelet.

4. Leave Additional Wires Disconnected:

   • The following wires will remain disconnected until Part 2:
     • Black Wire: Power from the battery.
     • Blue Wire: Brake control output.
     • Yellow Wire: Reverse light (optional; leave disconnected unless needed).

5. Test Initial Connection:

   • Use a test light or trailer to verify functionality of the 4-way connections (tail lights, turn signals).

Part 2: Install Brake Control Wiring

Step-by-Step Instructions:

1. Mount Circuit Breakers:

   • Install two 30A circuit breakers on the firewall or another suitable location near the battery.
   • Use self-tapping screws to mount them securely.

2. Route Power Wires:

   • Connect the black 12-gauge wire from the 7-way adapter to the auxiliary side of one circuit breaker (this powers the 7-way socket).
   • Run a heavy-gauge wire from the battery's positive terminal to the battery side of this circuit breaker, using a ring terminal.
   • Run another heavy-gauge wire from the battery's positive terminal to the auxiliary side of the second circuit breaker (for the brake controller).

3. Install the Brake Controller:

   • Mount the brake controller under the dash on a firm surface.
   • Use the following connections:
     • Red Wire: Connect to the cold side of the brake switch (active only when the brake pedal is pressed).
     • Blue Wire: Connect to the blue wire on the 7-way adapter for trailer brakes.
     • White Wire: Connect to a solid ground point on the vehicle body.
     • Black Wire: Connect to the auxiliary side of the second 30A circuit breaker (provides power to the brake controller).

4. Optional: Connect Reverse Light Circuit:

   • If the trailer has a reverse light circuit, connect the yellow wire from the 7-way adapter to the vehicle’s reverse light circuit.

5. Reconnect the Battery:

   • Reattach the negative battery cable and ensure all connections are secure.
   • Insert the fuses into both circuit breakers.

6. Secure All Wires:

   • Use cable ties to secure all loose wires and prevent damage or rattling.

7. Test the System:

   • Verify functionality of all circuits (running lights, turn signals, brake lights, and brake controller output).
   • If applicable, test the reverse light circuit.

Notes:

• Most installations will only require connecting the black and blue wires from the 7-way adapter.
• Leave the yellow wire disconnected unless the trailer has a reverse light or surge brake lockout circuit.
• Always adhere to safety guidelines and verify all connections before use.

Warning: Incorrect wiring can cause damage to the vehicle or trailer. Test all connections carefully before use.