mazDa KSC2V7780 Trailer Hitch Harness Kit Instruction Manual

mazDa KSC2V7780 Trailer Hitch Harness Kit

Product Information: Trailer Hitch Harness Kit for 2022> CX-5

The Trailer Hitch Harness Kit is a genuine accessory for the 2022> CX-5 model. The kit contains a main harness, tie mounts, foam tape, red T-taps, tie wraps, a grommet, a panel removal tool, a Phillips screwdriver, wire cutters, needle nose pliers, a tape measure, and a female connector. The installation instructions should be read carefully before proceeding with the installation. The kit is designed to be installed without damaging the vehicle paint or kit components. The bolts should not be over tightened and should be tightened to the specified torque. The customer’s preset radio stations should be recorded before installation. The negative (-) battery terminal should be removed using a 10mm socket.

Product Usage Instructions

Before Installation

1. Read the installation instructions carefully before proceeding.
2. Be careful not to damage vehicle paint or kit components.
3. Do not over tighten bolts, tighten to specified torque.
4. Record customers preset radio stations (if applicable).
5. Using a 10mm socket, remove negative (-) battery terminal.

Installation Steps

Step 1: Access Storage Compartments

Lift the rear hatch door and lower passenger seats behind the driver seat. Temporarily remove the floor deck panel.

Installation Alert:

Vehicles equipped with BOSE sound systems will have a wire harness located in the foam for the subwoofer. This harness needs to be detached from foam before removing inserts to prevent damage.
The harness does not need to be unplugged from the subwoofer or vehicle.

Step 2: Separating Weather Strip

Gently lift the rear weather strip away from the rear end trim, but do not completely remove from the vehicle. Gently lift the rear weather strip along the left trunk side trim, but do not completely remove from the vehicle. Gently lift the rear weather strip along the rear left passenger door starting at the top of the trunk trim and stopping at the scuff plate.

Step 3: Rear End Trim Removal

1. Locate the left and right push nut pins on the threshold plate and temporarily remove using a small flathead screwdriver.
2. The rear end trim is made up of 3 separate portions that are attached. Each portion will need to be detached before the rear end trim can be fully removed. Take note that all three pieces will come out at the same time once they are all detached.
3. Firmly pull up on section 2a to detach from vehicle attachment points and set aside.
4. Firmly pull up on section 2b to detach from vehicle attachment points and set aside.
5. Firmly pull up on section 2c to detach from vehicle attachment points and set aside.

Step 4: Removing Left Trunk Side Trim Fasteners

1. Locate driver’s side interior trim panel and follow sequence to remove (a-b-c-d).
2. Temporarily remove push nut pin of trim panel using a small flathead screwdriver for sequence (a).
3. Remove trim panel piece (b). Lift cover to access bolt and remove using a 10mm socket wrench (Torque Spec 9.0 – 12.0 N m).

Trailer Hitch Harness Kit

Package Contents

Tools Required

Before Installation

1. Read installation instructions before proceeding.
2. Be careful not to damage vehicle paint or kit components.
3. Do not over-tighten bolts, tighten to specified torque.
4. Record customers preset radio stations (if applicable).
5. Using a 10mm socket, remove negative (-) battery terminal.

ACCESS STORAGE COMPARTMENTS

1. Lift rear hatch door and lower passenger seats behind driver seat as shown.

2. Temporarily remove floor deck panel.
   INSTALLATION ALERT
   Vehicles equiped with a BOSE sound systems will have a wire harness located in the foam for the sub woofer. This harness will need to be detached from foam before removing inserts to prevent damage. Harness does not need to be unplugged from sub woofer or vehicle.

3. Temporarily remove jack and tow bar foam inserts.

4. Temporarily remove floor deck corner panel. (Left side shown, repeat for the right side of the vehicle.)

SEPERATING WEATHER STRIP

1. Gently lift rear weather strip away from the rear end trim, but do not completely remove from vehicle.
2. Gently lift rear weather strip along the left trunk side trim, but do not completely remove from vehicle.

3. Gently lift rear weather strip along rear left passeger door starting at the top of the trunk trim and stopping at the scuff plate.

REAR END TRIM REMOVAL

Tools Needed:

1. Locate left and right push nut pins on threshhold plate and temporarily remove using a small flathead screwdriver.

2. The rear end trim is made up of 3 seperate portions that are attached. Each portion will need to be detached before the rear-end trim can be fully removed. Take note that all three pieces will come out at the same time once they are all detached.

   • 2a. Firmly pull up on section 2a to detach from vehicle attachment points and set aside.
   • 2b. Firmly pull up on section 2b to detach from vehicle attachment points and set aside.
   • 2c. Firmly pull up on section 2c to detach from vehicle attachment points and set aside.

REMOVING LEFT TRUNK SIDE TRIM FASTENERS

Tools Needed:

1. Locate driver’s side interior trim panel and follow sequenceto remove. (a-b-c-d)
   • Temporarily remove push nut pin of trim panel using a small flathead screwdriver for sequence (a).
   • Remove trim panel piece (b). Lift cover to access bolt and remove using a 10mm socket wrench.
     (Torque Spec 9.0 – 12.0 N m).

Tools Needed:

  * Remove trim panel piece (c). Carefully release latch cover using a small flat head screwdriver. Remove phillips head screw securing the lift handle to the vehicle.
  * Remove trim panel piece (d), using a phillips head screw driver.

ACCESSING VEHICLE WIRE HARNESS BEHIND LEFT TRUNK SIDE TRIM

Tools Needed:

1. Carefully lift trim panel starting from inside driver side rear door area behind driver’s seat using trim panel remover tool.

2. Use trim panel remover tool to disengage two locking pin locations along trim panel side. Revert to the panel removal tool to disengage locking pin locations along top portion of trim panel.

3. Gently move the trunk side trim end away from vehicle body just far enough to access the OE harness & vehicle body located behind the trunk side trim. It is not necessay to remove the trunk side trim from the vehicle.

ROUTE NEW 4-FLAT MOLD FROM HITCH TO INTERIOR OF VEHICLE

Tools Needed:

INSTALLATION ALERT
Note: Vehicle shown in 4-FLAT Harness Routing Overview image is not equiped with parking sensors. Vehicles equiped with parking sensors will look slightly different in the area where tie wraps (e) and (f) are attached. Please refer to step 5 for details.

CRITICAL STEP
Due to the extremely high temperatures produced by the exhaust, a minimum clearance of 50mm MUST be maintained between the exhaust and all harness components at ALL TIMES. Failure to do so can result in severe harness damage and loss of trailer functions such as brake lights and/or turn signal lights.

a) Before fully tightening any tie wraps, confirm you have a minimum clearance of 50mm between harness and exhaust.

Critical Step: See Caution prior to performing step.

1. Secure the 4-flat trailer connector into the hitch bracket as shown. Route the the wire harness towards the cutout located on the bumper fascia mount (a). It’s important that the corrugated tube is routed over the edge of the bracket for protection. Use a large tie wrap to loosely secure the wire harness while keeping a 50MM CLEARANCE BETWEEN THE WIRE HARNESS AND ALL EXHAUST SURFACES as shown in the measurement photo 1b. Once clearance distance has been confirmed, rotate tie wrap head up into the bumper, remove all slack, fully tighten tie wrap, and trim with wire cutters.

CRITICAL STEP
It’s important that the corrugated tube is routed over the edge of the bracket for protection. Damage to harness may occur otherwise.

2. Route the harness behind fascia support bracket making sure the harness is routed between the bumper fascia and bracket (b). Use a large tie wrap to secure the harness to the fascia. Tighten the tie wrap and trim the tie wrap tail with wire cutters.
3. Use a large tie wrap to loosely secure the wire harness to the bottom of the cross member of the hitch (c) while keeping a 50MM CLEARANCE BETWEEN THE WIRE HARNESS AND ALL EXHAUST SURFACES. Tie wrap should be located 100mm from the cross member end. Once distances have been confirmed, remove all slack from the harness before fully securing and trimming the tie wrap tail with wire cutters.
4. Route the harness behind the rear most hitch attachment bolt and use a large
   tie wrap to loosely secure the harness to the hitch at the hitch split (d) while keeping a 50MM CLEARANCE BETWEEN THE WIRE HARNESS AND ALL EXHAUST SURFACES. Once the clearance has been confirmed, remove all slack from the harness before fully securing and trimming the tie wrap tail with wire cutters.

INSTALLATION ALERT
NOTE: It is not needed to perform both steps 5a and 5b. Perform only one based on the following:

  * Follow step 5a for vehicles not equipped with rear parking sensors.
  * Follow step 5b for vehicles equipped with rear parking sensors.

5. Use two large tie wraps to loosely secure the wire harness to the inside of the bumper at empty mounting points (e) and (f) while keeping a 50MM CLEARANCE BETWEEN THE WIRE HARNESS AND ALL EXHAUST SURFACES. Once distances have been confirmed, remove all slack from the harness before fully securing and trimming the tie wrap tails with wire cutters.

Use two large tie wraps to loosely secure the trailer wire harness to the rear parking sensor harness at points (e) and (f) while keeping a 50MM CLEARANCE BETWEEN THE WIRE HARNESS AND ALL EXHAUST SURFACES. Tie wraps should be located above the OE mounting clips for the rear parking sensor harness as shown in image. Once distances have been confirmed, remove all slack from the harness before fully securing and trimming the tie wrap tail with wire cutters.

After tie wraps have been fully tightened, reconfirm that all harness components have a minimum clearance of 50mm to the exhaust by using a scale to measure and confirm.

Tools Needed:

6. Locate and remove the existing cavity plug from the vehicle floor.
   Insert newly supplied grommet into existing cavity. Carefully route the 4 terminated harness wires from underneath the vehicle into the interior through the newly installed grommet.

7. Once the trailer harness has been routed through the grommet into the vehicle, confirm that the corrugated tube makes contact with the grommet underneath the vehicle and that the harness is located safely behind the bumper trim as shown in image.

MOUNT MAIN HARNESS & CONNECT 4-FLAT HARNESS TO MODULE

Tools Needed:

1. Clean the indicated wire tie mount and module mounting areas behind the driver’s side trim panel with an alcohol wipe. Remove adhesive backing on module and tie mounts. Mount wire harness module and three tie mounts to specified locations.

2. Insert the provided female connector to the four terminated wires. Firmly push terminal lock into the locked position.
   Attach the 4-Flat harness connector to the module connector. The wires should match color to color at the connectors. (reference illustration).

3. Use one piece of foam tape to protect connectors and to prevent rattle.
4. Use a tie wrap to secure connectors wrapped in foam tape to the main harness’s mounting component as shown.
5. Cut excess tie wrap used in prior step with wire cutters.

MOUNT GROUND WIRE

Tools Needed:

1. Locate ground mount and ground wire connection.
2. Remove the existing ground mount bolt using a 10mm socket wrench. Route the black ground wire from the main harness module to the bolt location and tighten. (Torque bolt to 7 N m)
3. 3. Gently pull up on 4-Flat harness until corrugated portion on harness makes contact with grommet on external portion of vehicle. While making sure corrugated tube is in contact with grommet, use three tie wraps to secure 4-Flat harness and ground wire to the three tie mount locations. Once secure, cut excess tie wraps.

ACCESS VEHICLE HARNESS & CONNECT WIRE TAPS TO VEHICLE HARNESS

1. Locate vehicle harness.
2. Expose vehicle harness wires by pulling back rubber casing sleeve.

3. Connect wire taps to vehicle harness on driver side. Locate and identify the tail light (PINK), left turn signal (SKY BLUE), and stop wire (RED), behind the driver’s side light. Attach a red T-tap to each
   of the indicated wires.

   • place wire into the center jaw of the wire T-Tap splice.
   • fold wire tap around wire.
   • Squeeze tightly together with pliers, making a secure connection.

Tools Needed:

4. Connect main harness spade terminals to wire taps (Use chart for reference).

5. Plug the wire harness connection back in.

REMOVE PRIMARY LOCK ON REAR JUNCTION CONNECTOR

Tools Needed:

1. Disconnect the rear junction connector by pushing down on the black primary lock and tilting back to release. Once connector is free, lock must be re-turned to its closed position before removing.
2. Remove black primary lock by using a small flathead screwdriver to pry and carefully lift the lock on both mating sides.

DISENGAGE SECONDARY LOCK & INSERT RED POWER WIRE

Tools Needed:

1. Disengage secondary lock on rear junction connector by carefully using a small flathead screwdriver or terminal removal pick tool.
2. Route the red power wire to the rear junction connector. Locate proper cavity to be populated (see illustration). Once terminal is properly engaged in connector, squeeze secondary lock into place.

REASSEMBLE REAR JUNCTION CONNECTOR & REMAINING T-TAP WIRE

Tools Needed:

1. Locate BLUE wire on rear junction connector for T-Tap connection.
2. Use a T-Tap on BLUE wire of the rear junction connector.

3. Confirm the secondary lock has re-engaged and place the black primary lock back on the connector. Make sure primary lock is disengaged and in the down position before inserting back into junction connector. Reassemble and insert the rear junction connector back in place. Primary lock should auto-lock in place.
4. Snap in remaining green main harness wire to T-Tap connection.
5. Tie wrap green main harness wire onto cable above main harness and cut excess tie wrap.

FINISHING STEPS

1. Seal the replacement grommet with silicon to prevent any possible water instrusion.
2. Reinstall all trim, tie downs and interior panels in reverse order of removal, ensuring all fasteners are properly installed.
3. Clean vehicle.
4. Vacuum and clean any debris caused by installation.
5. Place installation instructions int he glove box of vehicle.
6. Connect negative (-) battery terminal.

TROUBLESHOOTING GUIDE

TRAILER HITCH WIRING KIT

TOOLS REQUIRED

TEST LIGHT

METHOD

1. Attach the test light ground connection to the male pin of the harness’s 4-flat connector.
2. Probe each of the female pins individually to confirm correct circuit operation.

Fig. 1 – Fuse Replacement

INSTALLATION INSPECTION

TRAILER HITCH WIRING KIT

Inspect the installed / reinstalled parts for the following items:

 |  | __

|
---|---|---|---
__

__

__

| __

__

Inspection Parts

| __

__

Clearance/Fit

| Scratches/Dirt/ Harness Interference| Installation/ Tightening/ Engagement| __

Operation Check

50MM CLEARANCE BETWEEN THE WIRE HARNESS AND ALL EXHAUST SURFACES| __| __| __| __
Tow Harness Functions|  |  |  | __
Tow Harness| __| __| __|
Tow Harness Module Ground Screw|  |  | __|
Driver’s Side Left Rear Interior Trim Panel| __| __| __|
Passenger Side Right Rear Interior

Trim Panel

| __| __| __|
Rear Threshold Plate| __| __| __|
Rear Foam Inserts| __| __| __|
Rear Floor Covering| __| __| __|
Vehicle Negative Power Cable|  |  | __|
4-FLAT Harness| __| | __|

Notes:

1. Verify signal functionality at the trailer harness plug using test procedure on page 16.
2. Ensure tow harness module ground bolt is torqued to 7.0 N m.

CAUTION

When the battery is disconnected, the DSC may stop operating.
(The DSC OFF indicator will flash at this time, and the TCS/DSC operation indicator will illuminate.)

1. Turn the ignition switch to “OFF” and then turn it back to “ON”.
2. Turn the steering wheel clockwise as far as it will go, and then turn it back counterclockwise as far as it will go.
3. Check that the TCS/DSC operation indicator is turned off.
4. Turn the ignition switch to “OFF” and then turn it back to “ON”.
5. Check that the TCS/DSC operation indicator is turned off. If the TCS/DSC operation indicator is still illuminated or the DSC indicator is not turned off when the ignition switch is turned back to “ON”, contact your Mazda dealer.

If the battery is disconnected, the power windows may no longer fully open or fully close automatically.

1. Turn the ignition key to the “ON” position.
2. Press the power window switch to fully open the power windows.
3. Lift up the power window switch to fully close the power windows, and keep it pulled up for approximately 2 seconds.
4. Position the engine switch at “OFF”, and then at “ON” again. When the function doesn’t work after these procedures, please contact your Mazda dealer.

Due to the extreme high temperatures produced by the exhaust, a minimum clearance of 50mm must be maintained between exhaust and harness. Failure to do so will result in severe damage to harness and loss of trailer functions, such as brake lights and turn signal lights.

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