Installation Instructions for T-Connector Adapter

Part Numbers:

• 118392

Wiring Access Location:

• Rear taillight wiring harness behind the interior trim panels near the doors.

Tools Required:

• Drill with a 3/32" drill bit.
• Philips head screwdriver.

Step-by-Step Instructions:

1. Access the Taillight Wiring Harness:

   • Remove the rear interior trim panels located near the doors to expose the vehicle’s taillight wiring harness.
   • The harness will have a connection point on both sides matching the T-Connector adapter.

2. Driver’s Side Connection:

   • Disconnect the vehicle’s wiring harness connectors on the driver’s side, being careful not to damage the locking tabs.
   • Plug the T-Connector end with the yellow wire between the mating plugs on the driver’s side taillight socket and the vehicle’s wiring harness. Ensure the connectors are fully inserted and locked using the existing and provided locking tabs.

3. Ground Connection:

   • Locate a suitable grounding point near the connector, such as the vehicle’s frame or cross member.
   • Caution: Do not drill into the vehicle floor or any exposed surfaces. Verify what is behind any surface prior to drilling to avoid damage or injury.
   • Clean the area of dirt and rustproofing, drill a 3/32" hole, and secure the white wire using the provided eyelet and screw.

4. Passenger’s Side Connection:

   • Repeat steps 2 and 3 on the passenger’s side using the T-Connector end with the green wire.

5. Securing the Harness:

   • Tuck the green wire under the floor trim (threshold) panel and secure the wiring with cable ties as needed.

6. Reassembly:

   • Replace all removed trim panels and secure the rear interior of the vehicle.

7. Testing the Installation:

   • Test the installation with a test light or trailer to verify proper functionality. All connections must be complete for the T-Connector to function correctly.

   Specifications:

   • Max. stop/turn light: 1 per side (7.5 amps).
   • Max. tail lights: (7.5 amps).

Hardware List:

• T-Connector adapter.
• Eyelet and screw.
• Cable ties.

Safety Notes:

• Overloading the circuit can cause fires. Do not exceed the towing manufacturer’s rating or the unit specifications.
• Test the installation thoroughly after completing all connections.

Manufacturer Notes:

• Follow all warnings and installation instructions provided.
• Use a test light or trailer to confirm proper installation.
• Refer to the vehicle owner’s manual for additional information.

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:

1. Mount the Adapter:

   • Choose a suitable mounting point on the vehicle near the hitch.
   • Use a bracket (sold separately) to secure the adapter.

2. 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.

3. 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.

4. 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.

5. 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:

1. Disconnect the Battery:

   • Disconnect the negative (-) battery cable before beginning installation.

2. Mount the Brake Controller:

   • Secure the brake controller under the dash on a firm surface within reach of the driver.

3. 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.

4. 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.

5. Reconnect the Battery:

   • Reattach the negative (-) battery cable.

6. 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 Brake Control Plugin Wiring Harness (Part 20127/8506920)

Tools Required:

• Wire Stripper & Cutter
• Pliers

Overview:

This brake control plugin wiring harness is designed for quick and secure connections to your brake controller. It simplifies installation by matching functions and connecting to the corresponding wires in your vehicle.

Step-by-Step Instructions:

1. Disconnect the Battery:

   • Before beginning, disconnect the battery terminals to prevent electrical shorts or damage.

2. Connect the Wires:

   • Refer to the following chart to match the harness wires to their functions:
     • Black Wire: Battery Positive (+)
     • Red Wire: Stoplight Signal (active when the brake pedal is pressed)
     • White Wire: Ground (-)
     • Blue Wire: Output to Trailer Brakes
   • Use the appropriate connectors to secure each wire, ensuring a solid connection.

3. Secure the Wiring Harness:

   • Mount the wiring harness under the dashboard or another safe location, keeping it away from moving parts or sharp edges.

4. Plug in the Brake Controller:

   • Insert the wiring harness connector into the brake controller, ensuring it clicks securely into place.

5. Reconnect the Battery:

   • Reattach the battery terminals, ensuring they are clean and tightly connected.

6. Test the System:

   • Use a test light, circuit tester, or trailer to verify all functions:
     • The brake controller powers on.
     • The manual override activates the trailer brakes.
     • Stoplight signals and trailer brakes function properly when the brake pedal is pressed.

Notes:

• Always connect wires based on function, not color, to ensure proper operation.
• Consult your vehicle manual for fuse locations related to the brake control system.
• Verify all connections are secure and tested before use.

Warning:

• All connections must be complete for the system to function properly.
• Overloading circuits can cause damage or fire. Do not exceed the lower of the towing manufacturer’s ratings or:
  • Max. Right Turn, Left Turn, Stop, & Tail Light Circuits: 7.5 amps
  • Max. (+) Battery, Reverse, and Electric Brake Circuits: 30 amps
• Refer to your vehicle’s owner’s manual for additional instructions. Additional fusing may be required.

For safe towing and optimal performance, ensure all connections are properly secured and tested.

Installation and Operation Instructions for Electronic Brake Control

Product Information:

• Model: Electronic Brake Control for 2, 4, 6 & 8 Brake Applications
• Part Number: N8507111

Package Contents:

• Brake Control Unit
• Mounting Bracket
• Mounting Screws (#6 x 3/8") (Qty: 4)
• Warranty Card

Tools Required:

• Drill with 1/8" drill bit
• Screwdriver or 1/4" Nut Driver
• Wire Cutter/Stripper
• Wire Crimping Tool
• Circuit Tester (Probe Type)

Mounting Instructions:

Step 1: Select a Mounting Location

• Mount the unit securely to a solid surface.
• Ensure the location is within easy reach of the driver.
• Confirm the area behind the mounting location is clear before drilling.

Step 2: Install the Mounting Bracket

1. Hold the bracket in the selected position and mark the mounting holes.
2. Drill two 1/8" holes at the marked locations.
3. Secure the bracket using two self-tapping screws provided.

Step 3: Attach the Brake Control

• Slide the Brake Control Unit into the bracket.
• Secure it using the remaining screws.

Wiring Instructions:

Connect the Wires:

• Black Wire: Connect to the positive terminal of the vehicle battery through a 30A auto-reset circuit breaker.
• White Wire: Connect to a clean, bare metal ground.
• Red Wire: Connect to the cold side of the stoplight switch (voltage only when the brake pedal is pressed).
• Blue Wire: Connect to the trailer brake wire at the 7-way connector.

Control Functions:

Output (Gain) Control:

• Adjusts the maximum braking power applied to the trailer brakes.
• Gain settings range from 0 (minimum) to 10 (maximum).

Sync Control:

• Adjusts the aggressiveness of trailer braking.
  • +: More aggressive braking.
  • –: Less aggressive braking.

Manual Slide Control:

• Activates the trailer brakes independently of the tow vehicle brakes.
• Slide the control to the left to apply the brakes gradually.

Digital Display:

• Displays the Gain setting and Sync setting during operation.
• Indicators include:
  • Decimal Point: Activated manually or by pressing the brake pedal.
  • Blank Screen: No power or no trailer detected.
  • "OL": Overload warning (short circuit).
  • "Er": Internal error in the Brake Control Unit.

Setup and Testing:

Preliminary Adjustments:

1. Connect the trailer and hold the brake pedal.
2. Adjust the Gain to 2.0 using the Output Control.
3. Press the Sync + or – button to adjust the Sync setting to 4°.

Test Drive:

1. Drive forward at 25 mph in an open area.
2. Apply the trailer brakes using the Manual Slide Control:
   • If brakes are weak, increase the Gain setting.
   • If brakes lock up, decrease the Gain setting.
3. Repeat the adjustments until braking is firm and smooth without lock-up.

Fine-Tune Sync:

1. Press and hold the brake pedal.
2. Adjust Sync settings as needed:
   • +: For more aggressive stops.
   • –: For less aggressive stops.
3. Perform several test stops to ensure smooth operation.

Troubleshooting Guide:

Usage Tips:

• Light Brake Pressure: Activates the trailer brakes without vehicle brakes—ideal for slowing on steep grades.
• Sync Adjustments: Adjust Sync settings based on driver preference and road conditions.
• Manual Control: Useful for slowing down gradually or testing trailer brake function.
• If towing with hazard flashers, the Digital Display may flash; install a Pulse Preventor to eliminate this effect.

Safety Notes:

• Test the Brake Control system before each towing trip.
• Periodically inspect wiring for wear, corrosion, or damage.
• Do not exceed the manufacturer’s Gross Combined Weight Rating (GCWR).

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.

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.