Product Details
- Brand: Tekonsha
- Model: 118394 74184 8506020 20212-451030
- Includes: T-One T-Connector Custom Harness, Wiring Adapter, Trailer Brake Controller Installation Kit, Mounting Bracket
Compatibility Chart
Description
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For 2005-2006 Jeep Grand Cherokee 7 Pin Trailer Wiring RV 7 Way Trailer Plug By Tekonsha Install Notes
Installation Instructions for T-Connector Adapter
Part Numbers:
- 118394
Tools Required:
- T-20 Torx® Bit and Driver
- Drill with a 3/32” Drill Bit
Step-by-Step Instructions:
-
Remove Rear Taillight Assemblies:
- Open the rear tailgate to access the screws holding the taillights in place.
- Use a T-20 Torx® bit to remove the screws.
- Carefully pry the taillight housings rearward away from the vehicle, ensuring the alignment tabs are not broken.
-
Access Wiring and Disconnect Connectors:
- Locate the black housings that match the T-Connector housings.
- Disconnect the wire harness from both taillight sockets.
- Ensure all connector surfaces are clean and free of dirt.
-
Ground the White Wire:
- Locate a suitable grounding point on the driver’s side near the connectors.
- Drill a 3/32” hole and secure the white wire using the provided eyelet and screw.
- Caution: Verify what is behind any surface before drilling to avoid damage to the vehicle or personal injury. Do not drill into exposed surfaces.
-
Install the T-Connector:
- Beginning on the driver’s side, plug the T-Connector harness containing the yellow wire between the vehicle’s mating connectors.
- Ensure the connectors are fully inserted with locking tabs secured.
-
Route the Wiring Harness:
- Route the harness containing the green wire and the 4-flat connector down through the opening behind the taillight on the driver’s side.
- Route the 4-flat harness to the center of the vehicle and the green wire under the vehicle to the passenger side.
- Bring the green wire up through the opening behind the passenger’s side taillight.
Warning:
- Avoid routing the wire near hot pipes, heat shields, the fuel tank, or any other areas that may pinch or break the wire.
-
Install the Passenger Side T-Connector:
- Repeat step 4 on the passenger’s side using the T-Connector harness containing the green wire.
-
Secure the Wiring and Black Box:
- Use the provided cable ties to secure the wiring harness.
- Mount the converter (black box) inside the driver’s side taillight pocket, below the taillight, and between the vehicle body and bumper.
-
Reinstall the Taillights:
- Reinstall both rear taillights, ensuring all connections are complete and wires are not pinched.
-
Test the Installation:
- Test the T-Connector installation with a test light or trailer to verify proper functionality.
Specifications:
- Max. stop/turn light: 1 per side (2.1 amps).
- Max. tail lights: (5.0 amps).
Safety Notes:
- Overloading circuits can cause fires. Do not exceed the towing manufacturer’s rating or the unit specifications.
- Test thoroughly after installation to ensure proper functionality.
Manufacturer Notes:
- Follow all warnings and installation instructions provided.
- Refer to the vehicle owner’s manual for additional guidance.
Installation Instructions for T-Connector Adapter
Part Numbers:
- 118394
Tools Required:
- T-20 Torx® Bit and Driver
- Drill with a 3/32” Drill Bit
Step-by-Step Instructions:
-
Remove Rear Taillight Assemblies:
- Open the rear tailgate to access the screws holding the taillights in place.
- Use a T-20 Torx® bit to remove the screws.
- Carefully pry the taillight housings rearward away from the vehicle, ensuring the alignment tabs are not broken.
-
Access Wiring and Disconnect Connectors:
- Locate the black housings that match the T-Connector housings.
- Disconnect the wire harness from both taillight sockets.
- Ensure all connector surfaces are clean and free of dirt.
-
Ground the White Wire:
- Locate a suitable grounding point on the driver’s side near the connectors.
- Drill a 3/32” hole and secure the white wire using the provided eyelet and screw.
- Caution: Verify what is behind any surface before drilling to avoid damage to the vehicle or personal injury. Do not drill into exposed surfaces.
-
Install the T-Connector:
- Beginning on the driver’s side, plug the T-Connector harness containing the yellow wire between the vehicle’s mating connectors.
- Ensure the connectors are fully inserted with locking tabs secured.
-
Route the Wiring Harness:
- Route the harness containing the green wire and the 4-flat connector down through the opening behind the taillight on the driver’s side.
- Route the 4-flat harness to the center of the vehicle and the green wire under the vehicle to the passenger side.
- Bring the green wire up through the opening behind the passenger’s side taillight.
Warning:
- Avoid routing the wire near hot pipes, heat shields, the fuel tank, or any other areas that may pinch or break the wire.
-
Install the Passenger Side T-Connector:
- Repeat step 4 on the passenger’s side using the T-Connector harness containing the green wire.
-
Secure the Wiring and Black Box:
- Use the provided cable ties to secure the wiring harness.
- Mount the converter (black box) inside the driver’s side taillight pocket, below the taillight, and between the vehicle body and bumper.
-
Reinstall the Taillights:
- Reinstall both rear taillights, ensuring all connections are complete and wires are not pinched.
-
Test the Installation:
- Test the T-Connector installation with a test light or trailer to verify proper functionality.
Specifications:
- Max. Stop/Turn Light: 2.1 amps per side
- Max. Tail Lights: 5.0 amps
Safety Notes:
- Overloading circuits can cause fires. Do not exceed the towing manufacturer’s rating or the unit specifications.
- Test thoroughly after installation to ensure proper functionality.
Attention: This is a summary of the installation procedure. For complete installation instructions, including diagrams and detailed information from the manufacturer, please download the full installation PDF.
Technical Support:
For technical support and assistance, our team of experts is available to help. You can reach our tech support by visiting www.trailerjacks.com or calling 877-869-6690.
Installation Instructions for 4-Way to 7-Way Adapter and Brake Control Wiring (Economy Version)
Tools Required:
- Phillips Head Screwdriver
- Drill with 3/32" Drill Bit
- Wire Crimpers
- Wire Cutters
- Test Light or Multimeter
- Cable Ties
Part 1: Install the 4-Way to 7-Way Adapter
Step-by-Step Instructions:
-
Mount the Adapter:
- Choose a suitable mounting point on the vehicle near the hitch.
- Use a bracket (sold separately) to secure the adapter.
-
Connect the 4-Flat Plug:
- Plug the 4-flat connector from the adapter into the existing 4-flat plug on the vehicle.
- This connection provides tail lights, left turn, and right turn functions.
-
Ground the Adapter:
- Locate a solid grounding point near the adapter (e.g., frame or cross member).
- Clean the area to ensure good contact and secure the large white wire with the provided eyelet and screw.
-
Leave Additional Wires Disconnected:
- The blue wire (brake control) will remain disconnected at this stage.
- No additional power or reverse light connections are included with this economy kit.
-
Test Initial Connection:
- Verify functionality of the 4-way circuits (tail lights and turn signals) using a test light or trailer.
Part 2: Install the Brake Control Wiring Kit
Wire Functions:
- Red Wire: Connects to the cold side of the stoplight switch (active only when the brake pedal is pressed).
- Black Wire: Connects to the battery (+) via the 20A in-line fuse.
- White Wire: Ground (-) to the vehicle frame or negative battery terminal.
- Blue Wire: Connects to the blue wire from the 7-way adapter for trailer brakes.
Step-by-Step Instructions:
-
Disconnect the Battery:
- Disconnect the negative (-) battery cable before beginning installation.
-
Mount the Brake Controller:
- Secure the brake controller under the dash on a firm surface within reach of the driver.
-
Route and Connect Wires:
- Red Wire:
- Locate the stoplight switch under the dashboard.
- Use the provided wire tap to connect the red wire to the cold side of the stoplight switch.
- Black Wire:
- Connect one end of the black wire to the positive battery terminal using a ring terminal.
- Insert the provided 20A in-line fuse between the battery and the brake controller.
- White Wire:
- Connect the white wire to a solid ground point on the vehicle’s chassis or directly to the negative battery terminal.
- Blue Wire:
- Route the blue wire to the 7-way adapter and connect it to the blue wire from the adapter.
- Red Wire:
-
Secure the Wiring:
- Use cable ties to secure all wires, avoiding hot or moving parts.
- Pass wires through existing grommets or add a grommet/silicone to insulate wires passing through metal surfaces.
-
Reconnect the Battery:
- Reattach the negative (-) battery cable.
-
Test the System:
- Verify functionality of the brake controller using a trailer or test light.
- Ensure proper brake signal is sent to the trailer.
Notes:
- This economy kit does not include a dedicated power circuit for accessories or battery charging via the 7-way connector.
- The blue wire from the 7-way adapter is used exclusively for trailer brake control.
- Always verify all connections before use and follow safety guidelines during installation.
Warning: Improper installation or overloaded circuits can result in damage or fire. Test all connections carefully.
Installation Instructions for 4-Way to 7-Way Adapter and Brake Control Wiring (Economy Version)
Tools Required:
- Phillips Head Screwdriver
- Drill with 3/32" Drill Bit
- Wire Crimpers
- Wire Cutters
- Test Light or Multimeter
- Cable Ties
Part 1: Install the 4-Way to 7-Way Adapter
Step-by-Step Instructions:
-
Mount the Adapter:
- Choose a suitable mounting point on the vehicle near the hitch.
- Use a bracket (sold separately) to secure the adapter.
-
Connect the 4-Flat Plug:
- Plug the 4-flat connector from the adapter into the existing 4-flat plug on the vehicle.
- This connection provides tail lights, left turn, and right turn functions.
-
Ground the Adapter:
- Locate a solid grounding point near the adapter (e.g., frame or cross member).
- Clean the area to ensure good contact and secure the large white wire with the provided eyelet and screw.
-
Leave Additional Wires Disconnected:
- The blue wire (brake control) will remain disconnected at this stage.
- No additional power or reverse light connections are included with this economy kit.
-
Test Initial Connection:
- Verify functionality of the 4-way circuits (tail lights and turn signals) using a test light or trailer.
Part 2: Install the Brake Control Wiring Kit
Wire Functions:
- Red Wire: Connects to the cold side of the stoplight switch (active only when the brake pedal is pressed).
- Black Wire: Connects to the battery (+) via the 20A in-line fuse.
- White Wire: Ground (-) to the vehicle frame or negative battery terminal.
- Blue Wire: Connects to the blue wire from the 7-way adapter for trailer brakes.
Step-by-Step Instructions:
-
Disconnect the Battery:
- Disconnect the negative (-) battery cable before beginning installation.
-
Mount the Brake Controller:
- Secure the brake controller under the dash on a firm surface within reach of the driver.
-
Route and Connect Wires:
- Red Wire:
- Locate the stoplight switch under the dashboard.
- Use the provided wire tap to connect the red wire to the cold side of the stoplight switch.
- Black Wire:
- Connect one end of the black wire to the positive battery terminal using a ring terminal.
- Insert the provided 20A in-line fuse between the battery and the brake controller.
- White Wire:
- Connect the white wire to a solid ground point on the vehicle’s chassis or directly to the negative battery terminal.
- Blue Wire:
- Route the blue wire to the 7-way adapter and connect it to the blue wire from the adapter.
- Red Wire:
-
Secure the Wiring:
- Use cable ties to secure all wires, avoiding hot or moving parts.
- Pass wires through existing grommets or add a grommet/silicone to insulate wires passing through metal surfaces.
-
Reconnect the Battery:
- Reattach the negative (-) battery cable.
-
Test the System:
- Verify functionality of the brake controller using a trailer or test light.
- Ensure proper brake signal is sent to the trailer.
Notes:
- This economy kit does not include a dedicated power circuit for accessories or battery charging via the 7-way connector.
- The blue wire from the 7-way adapter is used exclusively for trailer brake control.
- Always verify all connections before use and follow safety guidelines during installation.
Warning: Improper installation or overloaded circuits can result in damage or fire. Test all connections carefully.
Attention:
This is a summary of the installation procedure. For complete installation instructions, including diagrams and detailed information from the manufacturer, please download the full installation PDF.
Warranty Information:
For complete warranty instructions, please download the full installation PDF.
Technical Support:
For technical support and assistance, our team of experts is available to help. You can reach our tech support by visiting www.trailerjacks.com or calling 877-869-6690.