Product Details
- Brand: Pro Series
- Model: 80500 8506920-2521
- Includes: POD Trailer Time-Delay Brake Controller for Trailers with 1-2 Axles, Trailer Brake Controller Universal Harness
Compatibility Chart
Year Range | Make | Model | Style |
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Description
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For 2005-2011 Mercury Mariner Pro Series POD Brake Control + Generic BC Wiring Adapter By Pro Series Install Notes
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:
-
Disconnect the Battery:
- Before beginning, disconnect the battery terminals to prevent electrical shorts or damage.
-
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.
- Refer to the following chart to match the harness wires to their functions:
-
Secure the Wiring Harness:
- Mount the wiring harness under the dashboard or another safe location, keeping it away from moving parts or sharp edges.
-
Plug in the Brake Controller:
- Insert the wiring harness connector into the brake controller, ensuring it clicks securely into place.
-
Reconnect the Battery:
- Reattach the battery terminals, ensuring they are clean and tightly connected.
-
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.
- Use a test light, circuit tester, or trailer to verify all functions:
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 Instructions for Electronic Brake Control (2 to 4 Brake Systems)
Product Information:
- Part Number: N80500
- Application: Designed for 2 to 4 trailer brake systems
Tools Required:
- Drill with 1/8" drill bit
- Screwdriver
- Wire Cutter/Stripper
- Wire Crimping Tool
- Circuit Tester
Package Contents:
- Brake Control Unit
- Mounting Bracket
- Mounting Screws (#6 x 3/8") (Qty: 4)
Components Overview:
- A: Power Knob
- B: Manual Slide Knob
- C: Bracket Mounting Holes
- D: Bi-Colored Light
Important Notes:
- Avoid RF Interference: Do not mount RF-generating devices (cell phones, radios) within 12 inches of the unit.
- Breakaway Battery: Reverse wiring of a breakaway battery will destroy the Brake Control.
- Breakaway Switch Testing: Disconnect the trailer plug before testing; failure to do so may destroy the Brake Control.
- Light Indicators:
- Green Light: Trailer is connected.
- Red Light: Brakes are activated (manual control or brake pedal).
- Flashing Red/No Light: Trailer is not connected.
- The Green Light uses 10 milliamps; it would take over 5,000 hours to drain the vehicle battery.
- Weight Limit: Never exceed the Gross Combined Weight Rating (GCWR) recommended by the vehicle manufacturer.
Mounting Instructions:
-
Select a Suitable Mounting Location:
- Choose a solid surface within easy reach of the driver.
-
Mount the Bracket:
- Use the mounting bracket as a template and mark the holes.
- Drill two (2) 1/8" holes at the marked points.
- Secure the bracket with #6 x 3/8" screws provided.
-
Install the Brake Control:
- Slide the Brake Control into the bracket.
- Secure with screws; tighten snugly but do not overtighten.
Wiring Instructions:
-
Black Wire (Battery +):
- Connect to the positive terminal of the vehicle battery using a 20A circuit breaker.
-
White Wire (Ground -):
- Connect to a clean, bare metal surface on the vehicle chassis.
-
Red Wire (Stoplight Switch):
- Connect to the cold side of the stoplight switch (only active when the brake pedal is pressed).
-
Blue Wire (Trailer Brake):
- Connect to the trailer brake wire at the 7-way connector.
Adjusting Brake Power:
-
Initial Setup:
- Turn the Power Knob to minimum.
- Turn the Power Knob 1/4 turn in the + direction.
-
Testing Brakes:
- Connect the trailer and drive at 25 mph on a dry, level surface.
- Apply the Manual Slide Knob:
- If brakes lock up: Reduce power using the Power Knob.
- If braking is insufficient: Increase power using the Power Knob.
-
Fine-Tuning Power:
- Repeat the above step until braking is smooth, just below the point of wheel lock-up.
Troubleshooting Guide:
Condition | Possible Cause | Solution |
---|---|---|
No trailer brakes (Manual Slide) | Power set to minimum | Adjust Power Knob upward. |
No brakes with pedal activation | Incorrect Red Wire connection | Verify Red Wire at stoplight switch. |
Weak trailer braking | Power too low | Increase Power Knob setting. |
Intermittent braking | Poor ground connection | Check White Wire ground. |
Brakes too strong | Power too high | Reduce Power Knob setting. |
Flashing Red Light | Trailer not connected or open wire | Check trailer wiring and connections. |
Constant Green Light | Short in brake line to ground | Inspect Blue Wire for short circuit. |
Safety Notes:
- Warm trailer brakes before testing by driving 1/4 mile at 45 mph with light manual braking.
- Adjust power based on load weight and road conditions.
- Do not set power so high that trailer brakes lock up, as this can cause loss of control.
Maintenance:
- Inspect trailer brakes every 3,000 miles or as recommended.
- Adjust brakes as necessary for optimal performance.
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.
Warning: Incorrect installation or failure to follow these instructions may result in loss of braking performance or damage to the Brake Control unit. Always test the brakes before towing.