Part Number:
KSC2V7780
KSS2V7780
Package Contents:
Installation Instructions
Trailer Hitch Harness Kit
Installation
Instructions
(QTY 1)
Tie Mounts
(QTY 3)
Foam Tape
(QTY 1)
Red T-Taps
(QTY 4)
Applicable Models:
2022> CX-5
Large Tie
Wraps
(QTY 7)
Tie Wraps
(QTY 10)
Grommet
(QTY 1)
A
G
J
Panel
Removal Tool
D
Phillips
Screwdriver
Main Harness
(QTY 1)
Tools Required
B C
Small Flathead
Screwdriver
E
Trim Panel
Remover
F
Female Connector
(QTY 1)
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.
10mm
Socket Wrench
H
Wire Cutters
Needle
Nose Pliers
Tape
Measure
Page 1 of 20
A
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.
1
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.)
2 3
Foam Inserts
4
BOSE wire harness
B
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.
1
Rear End Trim
2
Weather Strip
Weather Strip
Continues on next page
Page 2 of 20
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.
3. Behind driver’s seat
Start Here
Move Down
C REAR END TRIM REMOVAL
1. Locate left and right push nut pins on threshhold plate and
temporarily remove using a small flathead screwdriver.
1
Push Nut Pins
Tools Needed:
Small Flathead
Screwdriver
Left & Right
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.
Continues on next page
Page 3 of 20
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.
2
2a 2b
2c
D REMOVING LEFT TRUNK SIDE TRIM FASTENERS
1. Locate driver’s side interior trim panel and follow sequence
to remove. (a-b-c-d) a.) Temporarily remove push nut pin of trim panel using a
small flathead screwdriver for sequence (a).
b.) 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) .
1 c d
a
Tools Needed:
Small Flathead
Screwdriver
10mm Socket
Wrench a b
Left Trunk Side Trim b
Page 4 of 20
Lift Cover to Access Bolt
c.) 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. d.) Remove trim panel piece (d), using a phillips head screw driver.
c d
Tools Needed:
10mm Socket
Wrench
Small Flathead
Screwdriver
Phillips
Screwdriver
E
ACCESSING VEHICLE WIRE HARNESS BEHIND LEFT TRUNK SIDE TRIM
1. Carefully lift trim panel starting from inside driver side rear
door area behind driver’s seat using trim panel remover tool.
1.
Driver Side Rear Door Area
Tools Needed:
Panel
Removal Tool
Trim Panel
Remover
Locking
Pin Locations
Note: Wrap end of trim panel remover in soft tape/clothe tape to prevent damage.
Continues on next page
Page 5 of 20
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.
2. Driver’s side panel
Panel Removal Tool
Release
Latch Cover
Locking
Pin Locations
Start Here
Note: Wrap end of trim panel remover in soft tape/clothe tape to prevent damage.
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.
3
OE Harness
Vehicle Body
Page 6 of 20
ROUTE NEW 4-FLAT MOLD FROM HITCH TO INTERIOR OF VEHICLE Tools Needed:
Wire Cutters Tie Wraps Tape Measure
4-Flat Harness Routing Overview
Underside of vehicle shown
(Exhaust removed for clarity)
Exhaust removed for clarity
Tow Bar
Tie Wrap
(e)
Tie Wrap
(f)
Tie Wrap
(a)
Tie Wrap
(b)
Tie Wrap
(c)
Tie Wrap
(d)
Rear of
Vehicle
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.
Page 7 of 20
Continues on next page
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
Critical Step:
See Caution prior to performing step.
1a
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.
Up
Corrugated tube
Rotate Tie Wrap
(a) Head Up
2 1b
CRITICAL
STEP STEP
Measurement Photo
Tube
Exhaust
Exhaust
50mm
50mm
Edge of
Bracket
Edge of bracket
Harness
Tie Wrap
(a)
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.
Page 8 of 20
Continues on next page
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.
2
Support
Bracket
(a)
(b)
Tie Wrap
(b)
CRITICAL
STEP
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.
3-4
Side View
Cross member bottom
Tie Wrap
(c) Cross member end
Tie Wrap
(d)
50mm
100mm
Attachment bolt
CRITICAL
STEP
CRITICAL
STEP
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.
3-4
Bottom View
100mm
Attachment bolt
Tie Wrap
(d)
CRITICAL
STEP
Continues on next page
Page 9 of 20
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.
5a
No Parking Sensors
Empty Mounting
Points
CRITICAL
STEP CRITICAL
STEP
5a. 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.
5b
Parking Sensors
OE Parking Sensor
Harness
Trailer
Harness
CRITICAL
STEP
Tie Wrap
(f)
CRITICAL
STEP
5b. 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.
OE Mounting
Clips
OE Parking Sensor
Harness
CRITICAL
STEP
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.
Continues on next page
Page 10 of 20
6
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.
Cavity Plug
6
4-FLAT wires
Existing
Hole
Tools Needed:
Grommet
Grommet
7
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.
Grommet
Trailer
Harness
Bumper
Trim
(f)
Page 11 of 20
G MOUNT MAIN HARNESS & CONNECT 4-FLAT HARNESS TO MODULE
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.
Tools Needed:
3X
Tie Mounts
1
Tie Mount
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).
2
BROWN WIRE
Tie Wrap Female
Connector
Wire Cutters
Foam Tape
WHITE WIRE
GREEN WIRE YELLOW WIRE
TERMINAL LOCK
ENGAGES HERE
TERMINAL SIDE VIEW
TERMINAL LOCK
Continues on next page
Page 12 of 20
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.
3 4 5
Tie Wrap
Page 13 of 20
H
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) Wire Cutters 10mm Socket
Wrench
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.
1 2
Ground Mount
3
Ground Wire
Ground Mount
I
1
ACCESS VEHICLE HARNESS & CONNECT WIRE TAPS TO VEHICLE HARNESS
1. Locate vehicle harness.
2. Expose vehicle harness wires by pulling back rubber casing sleeve.
2
Vehicle Harness
Page 14 of 20
Continues on next page
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.
Tools Needed:
(a) place wire into the center jaw of the wire T-Tap splice.
(b) fold wire tap around wire.
Needle nose pliers
(c) Squeeze tightly together with pliers, making a secure connection.
4. Connect main harness spade terminals to wire taps (Use chart for reference).
3X
Red T-Taps
3 4
NOTE: ENSURE THE SPADE TERMINALS ARE
SECURELY SEATED INTO THE WIRE TAPS.
VEHICLE HARNESS WIRE COLOR CIRCUIT
PINK
RED
SKY BLUE
(4-WAY CONNECTOR)
(4-WAY CONNECTOR)
(3-WAY CONNECTOR)
TAIL LIGHT
STOP
LEFT TURN
Spade Terminals
VEHICLE HARNESS WIRE COLOR
PINK
RED
(4-WAY CONNECTOR)
(4-WAY CONNECTOR)
(3-WAY CONNECTOR)
ACCESSORY WIRE
HARNESS COLORS
BROWN
BLUE/BLACK
YELLOW
5. Plug the wire harness connection back in.
5
Page 15 of 20
J
REMOVE PRIMARY LOCK ON REAR JUNCTION CONNECTOR
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 returned 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.
Tools Needed:
Small Flathead
Screwdriver
1 2
Primary Lock
K DISENGAGE SECONDARY LOCK & INSERT RED POWER WIRE
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.
Tools Needed:
Small Flathead
Screwdriver
1 2
Secondary Lock
Red Power
Wire
Page 16 of 20
FROM OPPOSITE END
L
REASSEMBLE REAR JUNCTION CONNECTOR & REMAINING T-TAP WIRE
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.
1
Tie Wrap
2
Tools Needed:
Red T-Tap Wire Cutters
3
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.
4 5
M 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.
Page 17 of 20
1
PART NUMBER:
KSC2V7780
0000-89-R32A
TROUBLESHOOTING GUIDE
TRAILER HITCH WIRING KIT
APPLICABLE MODELS:
2017 > CX-5
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.
Right Turn/Stop Green
Left Turn/Stop Yellow
Tail
Ground
Yellow
Tail Brown
White
See Fig.1 page 14
Fig. 1 - Fuse Replacement
Fuse Cover Panel Fuse Relay Box
Fuse Location
Fuse Cover
Panel Location
Remove fuse relay box cover panel from underneath the dashboard on the driver side of the vehicle.
Page 18 of 20
15 amp fuse will be located in cavity labeled ESCL of the fuse relay box.
PART NUMBER:
KSC2V7780
0000-89-R32A
INSTALLATION INSPECTION
TRAILER HITCH WIRING KIT
Inspect the installed / reinstalled parts for the following items:
APPLICABLE MODELS:
2022> CX-5
Inspection Parts
50mm Between Exhaust & Harness
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
Clearance/Fit
Scratches/Dirt/
Harness
Interference
Installation/
Tightening/
Engagement
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.
Operation
Check n
Page 19 of 20
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.
CAUTION
!
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.
CAUTION
!
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.
Date
Vehicle
VIN
Checked Person in
Charge
Page 20 of 20
