Hyundai Tucson Tow Hitch Harness Installation Instructions

Instructional Symbols / Definitions

• ⚠️: Denotes warnings that may lead to serious physical injury or vehicle damage.
• ⚠️: Denotes cautions to be taken to avoid physical injury or electronic component damage.
• ✔️: Denotes quality processes to be checked prior to moving to the next step.
• ?: Denotes personal protective equipment (PPEs) that may be required for a step. Examples: ? (Glasses), ? (Mask), ? (Gloves), ? (Hearing Protection).
• ?️: Denotes specific tools that are necessary to complete a step.
• ⚠️: Denotes cautions to be taken to avoid vehicle and component damage.
• ℹ️: Denotes important information to be reviewed during the step.

Tools Required

Basic Required Tools

• Ratchet
• Torque Wrench
• Extension
• 3/8" Deep-Well Socket
• 10mm Socket
• 12mm Socket
• Wire Cutter
• #2 Phillips Screwdriver
• Clip Removal Tool
• Trim Removal Tool

Specialty Required Tools

• 12V Tester / Volt Meter OR 4-Way Tester
• Vehicle Lift

Part Information

Part Weight (Gross): 1.49 lbs (0.68 kg)

Load Label Part Number: NP070-09003

FMVSS 110 Compliance Information: All dealers must determine if the Net weight they have added in the form of all options or accessories, when added to the weight of all Port/Dealer Installed options or accessories, exceeds the lesser of 1.5% of GVWR or 100 lbs. If the additional weight does exceed the lesser of the indicated thresholds, a "Load Carrying Capacity Reduced" label must be installed. A black, fine-point, indelible marker must be used to write by hand onto the label, the reduced carrying capacity in kilograms or pounds, which is the total weight of all added options and accessories.

Notes to the Installer

1. Read the entire Installation Instructions prior to beginning the installation of this accessory.
2. If applicable, scan the barcode label located on the accessory part or packaging prior to installing, to register the part. If this accessory is installed as a replacement, register the removal of the old part before registering the new part. Old and new parts will have different barcode data, and the old registration cannot be reused.
3. Make sure the vehicle is completely clean and dry in the area(s) the part is to be installed.
4. Ensure the vehicle is properly protected in the area(s) that the accessory is to be installed.
5. NEVER place tools on painted surfaces, seating surfaces, dash pad, console or floor carpet/mats.
6. Always wear appropriate personal protective equipment, including gloves, safety glasses, etc., when required.
7. Roll down the driver's window and adjust the power seats (if applicable) prior to disconnecting battery power, if needed.
8. Record radio presets prior to disconnecting battery power, if needed.
9. Vehicle should be at room temperature.

Kit Overview

Hardware Overview

* Indicates extra components intentionally included in kit as spares. Follow instructions for proper placement of each component.

Special Instructions

Disconnecting Connectors: When disconnecting connectors, grasp the connectors, not the wire.

Locking Connectors: When locking connectors, listen for a click [click sound] indicating they are securely locked.

Installation Steps

Step 1: Prepare Vehicle

ℹ️ Location Reference: Left side Luggage Compartment.

Action: Position the vehicle on a vehicle lift. Do NOT raise vehicle at this time.

Notes:

• Record any pre-set radio stations (if applicable).
• Lower driver's front window.
• Open tailgate.
• Open the hood.
• For HEV models: disconnect and isolate the 12V Circuit Connector located on the passenger's side near the firewall and shock tower.
• For I.C.E. and PHEV models: remove negative (-) battery terminal cover, if applicable, and disconnect & isolate vehicle's negative (-) battery cable.

⚠️ Warning: Shock Hazard. Do not touch vehicle's negative battery cable to the vehicle's positive battery cable. Serious injury and damage to the vehicle may occur.

⚠️ Warning: Comply with vehicle lift manufacturer's instructions and safety when using the lift.

Step 2: Access Luggage Area

Action: Fold the left second row rear seatback forward. If equipped, remove cargo cover and store it in a safe location for reinstallation. Remove the luggage board, left side luggage panel, and the foam tray underneath the luggage board, then store them in a safe location for reinstallation.

⚠️ Caution: Do not scratch or damage any vehicle components.

Step 3: Remove Transverse Panel

Tools: Trim Removal Tool

Action: Remove the two (2) plastic push clips from the transverse panel and set the clips aside for reinstallation. Slightly pull back on the weatherstrip from the transverse panel area (do NOT fully dislodge). Carefully pull up on the transverse panel to dislodge and store it in a safe location for reinstallation. Temporarily reinstall weatherstrip.

⚠️ Caution: Do not scratch or damage any vehicle components.

Step 4: Remove Left Luggage Trim Panel

Tools: Trim Removal Tool and #2 Phillips Screwdriver

Action: Remove the three (3) screws securing the left luggage trim panel. Place screws in a safe location for reinstallation. Pull the weatherstrip slightly away from the left luggage trim panel (do NOT fully dislodge). Carefully dislodge the left luggage trim panel at the tailgate area. Do NOT completely remove the panel from the vehicle. Ensure the panel is not overly forced inboard as damage may occur. Temporarily reinstall weatherstrip.

⚠️ Caution: Do not scratch or damage any vehicle components.

Step 5: Disconnect Connectors

Action: Reach behind the left luggage trim panel and disconnect the two (2) connectors.

⚠️ Caution: Do not scratch or damage any vehicle components.

Step 6: Remove Factory Grommet

Tools: Trim Removal Tool

Action: Remove and discard the factory rubber grommet.

Step 7: Raise Vehicle

Tools: Vehicle Lift

Action: Raise vehicle to desired working height to access the under body at the rear bumper.

⚠️ Warning: Comply with vehicle lift manufacturer's instructions and safety when using the lift.

Step 8: Install 4-Flat Connector Bracket

Tools: Torque Wrench, Ratchet, Extension and 3/8" Socket

Action: Insert the Tow Hitch Harness 4-Flat Connector through the back side of the 4-Flat Connector Bracket. Place two (2) #10 carriage bolts through the top of the bracket and install two (2) #10 spacers. Ensure the Ground Pin is positioned towards the driver's side. Place the 4-Flat connector and bracket assembly through the hitch bracket so the larger forward detent is located in the rectangular slot in the hitch plate. Thread two (2) #10 nylock hex nuts to secure the connector bracket to the hitch and torque to: 1.36 N·m (0.14 kgf·m, 12.00 lbf·in). Secure the Dust Cover over the 4-Flat connector.

ℹ️ Note: Make sure the bracket is in the orientation shown and aligned squarely on the hitch connector bracket.

⚠️ Caution: Do NOT over-torque the hardware.

Step 9: Route Harness

Tools: Wire Cutters, Wire Ties

Action: Route the harness up and over the bumper reinforcement behind the rear bumper cover and secure with three (3) wire ties to the factory wire harnesses. Trim excess wire tie material.

⚠️ Caution: Ensure the harness is routed away from any sharp edges.

Step 10: Feed Harness Through Grommet Hole

Tools: Vehicle Lift

Action: Feed the harness through the vehicle hole that was plugged by the rubber grommet. Feed it inside the luggage compartment just past the rubber grommet on the harness, then seat the grommet in the hole. Lower the vehicle.

⚠️ Warning: Comply with vehicle lift manufacturer's instructions and safety when using the lift.

Step 11: Mount Control Module Bracket

Action: Insert the provided bracket onto the control module until the retaining tab is engaged. Ensure the bracket is locked in place.

Step 12: Connect Control Module

Action: Connect the three (3) tow hitch harness connectors into the control module and ensure they are locked in place. Apply foam tape to the bottom side of the module.

ℹ️ Note: Ensure the connectors are locked in place.

Step 13: Install Control Module Bracket

Tools: Ratchet, Torque Wrench, Extension and 10mm Socket

Action: Remove the factory 10mm nut and insert the control module bracket over the factory stud. Reinstall the factory 10mm nut and torque to: 9.8 ~ 12.7 N·m (1 ~ 1.25 kgf·m, 7.2 ~ 9.3 lb-ft).

⚠️ Caution: Do NOT over-torque the nut.

Step 14: Remove Factory Bolt

Tools: Ratchet, Extension and 12mm Socket

Action: Remove the factory 12mm Bolt.

Step 15: Ground Harness

Tools: Ratchet, Torque Wrench, Extension and 12mm Socket

Action: Insert the 12mm Bolt through the ground ring terminal of the tow hitch harness and reinstall the bolt. Torque the 12mm Bolt to: 11.8 ~ 16.7 N·m (1.2 ~ 1.7 kgf·m, 8.5 ~ 12.2 lb-ft).

⚠️ Caution: Do NOT over-torque the bolt.

Step 16: Connect 8-Pin Connector

Action: Locate the factory 8-Pin male connector behind the left luggage trim panel. Connect the tow hitch harness's 8-Pin input harness connector into the factory 8-Pin connector and make sure they are locked in place. Confirm the rubber grommet is properly seated.

ℹ️ Note: Ensure the connectors are locked in place and rubber grommet is properly seated.

Step 17: Route and Secure Additional Harnesses

Tools: Wire Cutters, Wire Ties

Action: Route the harnesses as shown and secure with three (3) wire ties to factory harnesses. Trim excess wire tie material.

Step 18: Reconnect Battery and Perform Checks

Tools: Ratchet, 10mm Socket and Torque Wrench, 12V Tester / Volt Meter OR 4-Way Tester

Action (HEV models): Reconnect the 12V Circuit Connector and ensure it is locked in place.

Action (I.C.E. & PHEV models): Reconnect the Vehicle's Negative (-) Battery Cable, torque to: 5.0 ~ 6.0 N·m (0.5 ~ 0.6 kgf·m, 45 ~ 52 lb-in). Reinstall the Cap from Negative (-) Battery Cable, if applicable. Close the hood.

⚠️ Warning: Shock Hazard. Do not touch vehicle's negative battery cable to the vehicle's positive battery cable. Serious injury and damage to the vehicle may occur.

Action: Perform Function Check with a 12V Tester / Volt Meter OR 4-Way Tester.

▶️ GO TO: Visual Check & Function Check

Step 19: Reinstall Trim Panels

Action: Reinstall, in reverse order, all items and trim panels removed during installation.

• Reconnect the two (2) connectors that were disconnected in step 5 from the left luggage trim panel.
• Slightly pull back on the weatherstrip from the left luggage trim area, reinstall the left luggage trim panel and resecure the panel with the three (3) screws.
• Slightly pull back on the weatherstrip from the transverse area, reinstall the transverse panel and resecure using the two (2) plastic push clips, then reinstall the weatherstrip.
• Place the foam tray, left side luggage panel, and luggage board back into original location.
• If applicable, reinstall the cargo cover.
• Fold the left second row rear seatback back in the upright position.

⚠️ Caution: Do not scratch or damage any vehicle components.

Step 20: Final Steps

Action: Close tailgate. Place the provided Caution Card and Notice Card into the Vehicle's Glove Box.

Visual Check

Function Check

Troubleshooting

Wiring Diagrams

Wiring Diagram Total:

The system connects the Vehicle Prepared Connector to the Control Module, which includes a 15A Fuse and Ground connection. The Trailer Hitch Harness connects to this system via a Vehicle Grommet.

Input Harness: The input harness connects to the Vehicle Prepared Connector and the Control Module. Key connections include CAN-H, CAN-L, and STOP SIG.

Output Harness: The output harness connects to the Control Module and provides connections for Trailer Lights (Tail/Marker, Left Turn/Stop, Right Turn/Stop) and Ground.

Connector Details:

• FEMALE 4P POWER CONNECTOR: PWR-3 (+12V BATT), PWR-4 (GND).
• FEMALE 6 PIN INPUT CONNECTOR: INPUT-1 (CAN-H), INPUT-2 (CAN-L), INPUT-4 (STOP SIG).
• FEMALE 8 PIN PREPARED CONNECTOR: PRE-1 (+12V), PRE-2 (B-CAN H), PRE-3 (B-CAN L), PRE-4 (GND), PRE-6 (STOP SIG).
• 2P FUSE (15A): 15F-1 (To Main), 15F-2 (To Vehicle).
• FEMALE 12 PIN OUTPUT CONNECTOR: OUTPUT-1 (TURN LH/STOP LIGHT), OUTPUT-3 (TURN RH/STOP LIGHT), OUTPUT-5 (TAIL LIGHT).
• 4 PIN OUTPUT CONNECTOR: OUTPUT-1 (GND), OUTPUT-2 (TAIL LIGHT), OUTPUT-3 (LEFT TURN / STOP LIGHT), OUTPUT-4 (RIGHT TURN STOP LIGHT).
• Ground Terminal: Studsize 8.4mm, Thick 0.6mm.