For 2007‑2021 Freightliner Sprinter 3500 Tekonsha Brakeman IV Brake Control + Plug & Play BC Adapter By Tekonsha
Model: 8507120 3063-3762007-2021 Freightliner Sprinter 3500
This Bundle Includes the Following Parts:
Tekonsha Brakeman IV Brake Control
Plug & Play BC Adapter
List of fitment years:
2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
Brakeman® IV Time-Delay Brake Controller for Trailers with 1-4 Axles, Black Manufactured by: Tekonsha
The Tekonsha Brakeman IV digital brake control is designed to handle from one to four braking axles and includes a digital display. The digital display indicates the amount of voltage power being delivered to the brakes and assists in accurately adjusting the trailer brakes for city or highway driving. Separate adjustment controls (Output & Sync) allow for not only the different weights (Output) of trailers, but also the speed of activation (Sync) depending on your driving style.
• Small compact design
• Easy push button adjustment for output and sync
• Plug and play feature allows quick and easy connection
• Digital Display output setting, sync setting, brake overload or short connection
• Advanced internal circuit protection
• No leveling required
• Mounts in any direction
• For use on 12 volt negative ground systems only
Trailer Brake Controller Wiring Harness Manufactured by: Tekonsha
Our 2-Plug units are designed for brake controls that have a wiring port built into the back of the unit. Simply plug the brake control end of the wiring harness into the back of the brake control and the vehicle end into the automobile's port. Brake controls that utilize the 2-plug style of wiring harness will be identified with the Plug & Play logo.
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Product Details
- Brand: Tekonsha
- Model: 8507120 3063-376
- Includes: Brakeman IV Time-Delay Brake Controller for Trailers with 1-4 Axles, Trailer Brake Controller Custom Harness
Compatibility Chart
Description
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For 2007-2021 Freightliner Sprinter 3500 Tekonsha Brakeman IV Brake Control + Plug & Play BC Adapter By Tekonsha Install Notes
Installation Instructions for Electric Trailer Brake Control Wiring Adapter
Part Number: 306300
Tools Required:
- Trim Panel Remover
- Phillips Screwdriver
- Wire Cutters
Step-by-Step Instructions:
Step 1: Locate the Brake Control Harness Connector
- Ensure the vehicle is off and the keys are removed from the ignition.
- Locate the green 4-pin connector underneath the driver's seat.
- This connector will match the adapter’s connector.
- Note: Removal of the driver’s seat may be required for access.
Step 2: Connect the Brake Control Adapter
- Plug the brake control adapter into the vehicle’s electric brake control harness connector.
- Follow the brake control manufacturer’s instructions for wiring and mounting the brake controller.
Step 3: Route the Adapter
- Determine a suitable routing path for the adapter to exit through the bottom of the dash.
- Ensure the adapter and wires are not pinched or exposed to sharp edges.
Step 4: Finalize Installation
- Follow all brake control manufacturer’s instructions to complete the system setup.
- Perform the required test procedures as outlined in the brake controller manual.
Step 5: Reinstall All Removed Components
- Reinstall any parts removed during the installation, such as:
- Driver’s seat (if applicable)
- Fasteners and trim panels
- Ensure all fasteners are securely installed in their original positions.
Notes:
- Vehicles not equipped with an OEM trailer tow package will not have the 4-pin green connector present.
Warnings:
- Overloading the Circuit Can Cause Fires:
- DO NOT exceed the lower of:
- Vehicle manufacturer’s towing rating, or
- Maximum Capacity: 4 axles / 8 brakes (24 amps).
- DO NOT exceed the lower of:
- Read and follow the vehicle owner’s manual and the brake controller instructions for safe operation.
- Always wear safety glasses and take appropriate precautions during installation.
Safety Precautions:
- Verify all wires are routed safely away from:
- Moving parts
- Sharp edges
- Heat sources
- Periodically inspect connections for damage or looseness.
End of Instructions
Installation and Operation Instructions for Electronic Brake Control
Part Numbers:
- Included Brake Control Unit: Part Number N8507120
Tools Required:
- Drill with 1/8" bit.
- Screwdriver or 1/4" nut driver.
- Wire connector crimp tool.
- Probe-type circuit tester.
- Assorted end wrenches.
- Wire cutter/stripper.
Safety Notes:
- Ensure the area behind the panel is clear before drilling.
- Follow all instructions to prevent damage to the unit or injury during installation.
- Avoid using RF-generating devices closer than 12 inches to the brake control.
- Always verify proper electrical connections.
Hardware List:
- Brake Control Unit.
- Mounting Bracket.
- (4) Mounting Screws.
- Additional Materials Required:
- 10 Ga. wire.
- 30 Amp auto-reset circuit breaker.
- Assorted ring terminal & butt connectors.
- 4" cable ties (6-10).
Installation Instructions:
Mounting the Unit:
- Choose a Suitable Location:
- Ensure a secure, solid surface.
- Ensure the unit is within easy reach of the driver.
- Verify the area behind the panel is clear.
- Mark and Drill Holes:
- Use the bracket as a template to mark hole locations.
- Drill two 1/8" diameter holes.
- Attach the Bracket:
- Secure the bracket using two self-tapping screws provided.
- Avoid over-tightening to prevent damage to the holes.
- Mount the Brake Control Unit:
- Attach the control unit to the bracket with the remaining screws.
Wiring and Connections:
- Black Wire: Connect to the vehicle's power supply.
- Red Wire: Connect to the stoplight signal.
- White Wire: Connect to the vehicle's ground.
- Blue Wire: Connect to the trailer brakes.
Initial Setup:
- With the trailer connected, press and hold the brake pedal.
- Adjust the Output (Gain) Control to approximately 2.0 using the digital display.
- Adjust the Sync Control to a setting of 4°.
- Test the brake application by driving in an open area and using the manual slide control.
Sync and Output (Gain) Adjustments:
- Sync Control: Adjust the aggressiveness of trailer braking.
- Sync settings range from 0° (least aggressive) to 9° (most aggressive).
- Output (Gain) Control: Adjust the maximum power delivered to the brakes.
- Output ranges from 0 to 10, with 10 being maximum braking power.
Testing and Fine-Tuning:
- Conduct a test drive at low speeds in a clear area.
- Use the Manual Slide Control to apply trailer brakes and adjust the Gain as needed.
- Verify smooth stops without jerking or locking the brakes.
- Adjust Sync settings for road conditions and driver preferences.
Maintenance:
- Regularly inspect all connections and wires for damage or wear.
- Keep the unit clean and free of debris.
- Periodically check and tighten all mounting screws.
Troubleshooting Guide:
| Condition | Probable Cause | Solution |
|---|---|---|
| No trailer brakes. | No power or incorrect wiring. | Check power and ground connections. |
| Weak trailer braking. | Low Output (Gain) setting. | Increase the Gain setting. |
| Brakes lock when applied. | High Output (Gain) setting. | Decrease the Gain setting. |
| Display shows "OL" when active. | Short in the blue wire circuit. | Locate and correct the short. |
| Display shows "Er". | Internal brake control issue. | Refer to the full installation PDF for guidance. |
Warranty Information:
- Limited Lifetime Warranty:
- Covers defects in materials and workmanship.
- Excludes damage caused by misuse or improper installation.
- 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.
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.
