Reese Compact IQ Hidden Trailer Brake Control for 19‑22 Mercedes‑Benz Freightliner Sprinter 1500 w/ Plug Play Wiring Adapter Proportional Trailer Brakes Module Box Controller 1‑3 Axle
Model: 8508700 3030Brake Control Unit
Mounting hardware and bracket
Vehicle specific Plug and Play Wiring Adapter
Fits The Following Vehicles
2019 - 2022 Freightliner, Sprinter 1500, All Styles
2019 - 2022 Mercedes-Benz, Sprinter, Except 2500 & 3500 Models
2019 - 2022 Mercedes-Benz, Sprinter 1500, All Styles
Brake Control Specs:
| Part Number | 8508700 |
| Brand | Reese |
| Type | Proportional |
| Axles | 1 to 3 axle trailers |
| Warranty | Limited Lifetime |
| Installation Instructions |  |
| Part Number | 3030 |
| Brand | Tekonsha |
| Warranty | 1 Year |
| Installation Instructions | |
Thank you for choosing Reese made by same people that brought you Tekonsha and Draw-Tite the most powerful manufacturers of electric trailer brake control systems. Manufactured by the same people that brought you Reese, Draw-Tite and Hidden Hitch all of our products come with standard lifetime warranty and support. Our brake controls easily install on your Car Truck Van and SUV. For custom applications on Ford F150 F250 F350 E Series Van Expedition Toyota Tundra Tacoma Chevy Silverado Tahoe GMC Sierra Nissan Titan Frontier please choose one of our 2-Plug wiring adapters recommended below. These adapters will simply plug into the back of the brake control and the other end plugs into a matching plug on your truck. There is no splicing or worry involved, a very easy process. We have adapters for other vehicles as well. The brake control itself always comes with a 1-plug adapter out of the box, which you can splice into any vehicle. Getting a 2plug adapter will only easy your installation and avoid any sort of splicing. All parts in our store are sold at a discount. If you have any questions please do not hesitate to give us a call at 702-374-8999. We will match or beat anyones price.
Partial list of fitment years: 19 20 21 22 2019 2020 2021 2022
$135 64 $205.24 34% OFF
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Product Details
- Brand: Reese
- Model: 8508700 3030
- Includes: CompactIQ Trailer Brake Controller Proportional 1-3 Axles, Trailer Brake Controller Custom Harness
Compatibility Chart
Description
Brake Control Unit
Mounting hardware and bracket
Vehicle specific Plug and Play Wiring Adapter
Fits The Following Vehicles
2019 - 2022 Freightliner, Sprinter 1500, All Styles
2019 - 2022 Mercedes-Benz, Sprinter, Except 2500 & 3500 Models
2019 - 2022 Mercedes-Benz, Sprinter 1500, All Styles
Brake Control Specs:
| Part Number | 8508700 |
| Brand | Reese |
| Type | Proportional |
| Axles | 1 to 3 axle trailers |
| Warranty | Limited Lifetime |
| Installation Instructions | |
| Part Number | 3030 |
| Brand | Tekonsha |
| Warranty | 1 Year |
| Installation Instructions | |
Thank you for choosing Reese made by same people that brought you Tekonsha and Draw-Tite the most powerful manufacturers of electric trailer brake control systems. Manufactured by the same people that brought you Reese, Draw-Tite and Hidden Hitch all of our products come with standard lifetime warranty and support. Our brake controls easily install on your Car Truck Van and SUV. For custom applications on Ford F150 F250 F350 E Series Van Expedition Toyota Tundra Tacoma Chevy Silverado Tahoe GMC Sierra Nissan Titan Frontier please choose one of our 2-Plug wiring adapters recommended below. These adapters will simply plug into the back of the brake control and the other end plugs into a matching plug on your truck. There is no splicing or worry involved, a very easy process. We have adapters for other vehicles as well. The brake control itself always comes with a 1-plug adapter out of the box, which you can splice into any vehicle. Getting a 2plug adapter will only easy your installation and avoid any sort of splicing. All parts in our store are sold at a discount. If you have any questions please do not hesitate to give us a call at 702-374-8999. We will match or beat anyones price.
Partial list of fitment years: 19 20 21 22 2019 2020 2021 2022
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Reese Compact IQ Hidden Trailer Brake Control for 19-22 Mercedes-Benz Freightliner Sprinter 1500 w/ Plug Play Wiring Adapter Proportional Trailer Brakes Module Box Controller 1-3 Axle Install Notes
Installation Instructions for Electric Trailer Brake Control Wiring Adapter
Part Number: 303000
Tools Required:
- Trim Panel Remover
- Philips Screwdriver
- Wire Cutters
Step-by-Step Instructions:
Step 1: Preparation
- Ensure the vehicle is turned off and the keys are removed from the ignition.
Step 2: Locate the Brake Control Harness Connector
- Locate the green 4-pin connector under the driver-side seat.
- This connector will match the plug on the adapter.
NOTE:
Removal of the driver’s seat may be required to gain access to the connector.
Step 3: Connect the 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 control unit.
Step 4: Route the Adapter
- Find a suitable routing path for the adapter to exit near the bottom of the dashboard.
- Ensure the adapter is securely routed and does not interfere with vehicle operation.
Step 5: Replace Removed Components
- Reinstall any parts or trim panels removed during the installation.
- Ensure all fasteners are returned to their original positions.
NOTE:
Vehicles not equipped with an OEM trailer tow package will not have the green 4-pin connector present.
Warnings:
- Circuit Overload Warning:
- Do not exceed the towing capacity specified by the vehicle manufacturer or:
- Maximum: 4 axles / 8 brakes (24 amps).
- Do not exceed the towing capacity specified by the vehicle manufacturer or:
- Overloading the circuit may cause fire or electrical damage.
Safety Notes:
- Always wear safety glasses during installation.
- Follow all safety precautions listed in the vehicle owner’s manual.
- Do not route wires near:
- Sharp edges
- Hot components
- Moving parts
Final Notes:
- Perform all test procedures as instructed by the brake controller manufacturer.
- Retain these instructions for future reference.
End of Instructions
Installation Instructions for Electric Trailer Brake Control Wiring Adapter
Part Number: 303000
Tools Required:
- Trim Panel Remover
- Philips Screwdriver
- Wire Cutters
Step-by-Step Instructions:
Step 1: Preparation
- Ensure the vehicle is turned off and the keys are removed from the ignition.
Step 2: Locate the Brake Control Harness Connector
- Locate the green 4-pin connector under the driver-side seat.
- This connector will match the plug on the adapter.
NOTE:
Removal of the driver’s seat may be required to gain access to the connector.
Step 3: Connect the 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 control unit.
Step 4: Route the Adapter
- Find a suitable routing path for the adapter to exit near the bottom of the dashboard.
- Ensure the adapter is securely routed and does not interfere with vehicle operation.
Step 5: Replace Removed Components
- Reinstall any parts or trim panels removed during the installation.
- Ensure all fasteners are returned to their original positions.
NOTE:
Vehicles not equipped with an OEM trailer tow package will not have the green 4-pin connector present.
Warnings:
- Circuit Overload Warning:
- Do not exceed the towing capacity specified by the vehicle manufacturer or:
- Maximum: 4 axles / 8 brakes (24 amps).
- Do not exceed the towing capacity specified by the vehicle manufacturer or:
- Overloading the circuit may cause fire or electrical damage.
Safety Notes:
- Always wear safety glasses during installation.
- Follow all safety precautions listed in the vehicle owner’s manual.
- Do not route wires near:
- Sharp edges
- Hot components
- Moving parts
Final Notes:
- Perform all test procedures as instructed by the brake controller manufacturer.
- Retain these instructions for future reference.
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.
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 Reese Towpower Compact IQ™ Brake Control for 1-, 2-, and 3-Axle Brake Systems
Part Number:
- 8508700
Tools Required:
- Drill with 9.1 mm (23/64 in) and 8.0 mm (5/16 in) bits
- Wire Connector Crimp Tool
- Wire Cutter/Stripper
- Probe-Type Circuit Tester
Materials Required:
- 12-Gauge or larger wire
- 20-amp Automatic Reset Circuit Breaker (1–2 axles)
- 30-amp Automatic Reset Circuit Breaker (3 axles)
- Assorted Ring Terminals and Butt Connectors
Components:
- Brake Control Unit
- Plug & Play Connector
- Power Output Control/Manual Override Button
- Boost Control
- LED Indicator
Step-by-Step Installation Instructions:
1. Mounting Power Output/Boost Control and LED Indicator
- Select a mounting location on or near the dashboard.
- Mark surface for the control centers.
- Drill a top hole for the LED using an 8.0 mm (5/16 in) bit.
- Drill a bottom hole for the Power Output/Boost Control using a 9.1 mm (23/64 in) bit.
- Attach the descriptive label over each hole.
- Install the Power Output/Boost Control through the hole with the flat side down. Secure with washer and nut.
- Install the LED holder in the top hole, press LED into the holder, and tighten securely.
2. Mounting the Compact IQ™ Brake Control Unit
-
Orientation Requirements:
- Arrow on the unit must point in the direction of travel.
- Unit must be horizontal within ±20° and parallel to direction of travel.
-
Mounting Options:
- Use the provided bracket and screw for secure installation.
- Use the foam pad for adhesive mounting.
3. Wiring Instructions
Option 1: Plug & Play
- Locate factory tow package harness under the dash.
- Connect vehicle-specific Plug & Play harness to the tow package harness.
- Connect the other end to the brake control unit.
Option 2: Universal Installation
- Remove the Plug & Play Connector and splice wires as follows:
- Black Wire: Positive Battery (+) via 20A/30A Circuit Breaker.
- White Wire: Ground (-) to Battery Negative Terminal.
- Red Wire: Cold side of stoplight switch.
- Blue Wire: Brake output to trailer connector.
- Route wires away from the radio antenna to reduce interference.
Wiring Diagram:
- Black → Positive Battery (+)
- White → Ground (-)
- Red → Cold Side Stoplight Switch
- Blue → Brake Output to Trailer
Controls & Indicators:
LED Indicator:
- Off: No trailer detected or unit asleep.
- Green: Trailer detected; unit active.
- Red: Brakes applied (pedal or manual override).
- Flashing Red: Wiring issues (shorted brake magnets, ground connection failure).
Power Output Control:
- Adjusts maximum braking power. Rotate clockwise for more power.
Boost Control:
- Boost Levels:
- B0: Off
- B1: 15% initial braking power.
- B2/B3: 30% initial braking power for heavier trailers.
Safety Notes:
- Test Brake Control settings each time a trailer is connected.
- Adjust trailer brakes every 3,000 miles.
- Never exceed the lowest-rated capacity of the vehicle, hitch, or trailer.
- Do not use Boost settings on icy road conditions.
Specifications:
- Compatible with 12V electric trailer brakes for up to 3 axles.
- Requires 20A circuit breaker (1–2 axles) or 30A circuit breaker (3 axles).
For technical assistance or warranty support, call 1-888-785-5832.
© 2017 Cequent Consumer Products, Inc.
Installation Instructions for Reese Towpower Compact IQ™ Brake Control for 1-, 2-, and 3-Axle Brake Systems
Part Number:
- 8508700
Tools Required:
- Drill with 9.1 mm (23/64 in) and 8.0 mm (5/16 in) bits
- Wire Connector Crimp Tool
- Wire Cutter/Stripper
- Probe-Type Circuit Tester
Materials Required:
- 12-Gauge or larger wire
- 20-amp Automatic Reset Circuit Breaker (1–2 axles)
- 30-amp Automatic Reset Circuit Breaker (3 axles)
- Assorted Ring Terminals and Butt Connectors
Components:
- Brake Control Unit
- Plug & Play Connector
- Power Output Control/Manual Override Button
- Boost Control
- LED Indicator
Step-by-Step Installation Instructions:
1. Mounting Power Output/Boost Control and LED Indicator
- Select a mounting location on or near the dashboard.
- Mark surface for the control centers.
- Drill a top hole for the LED using an 8.0 mm (5/16 in) bit.
- Drill a bottom hole for the Power Output/Boost Control using a 9.1 mm (23/64 in) bit.
- Attach the descriptive label over each hole.
- Install the Power Output/Boost Control through the hole with the flat side down. Secure with washer and nut.
- Install the LED holder in the top hole, press LED into the holder, and tighten securely.
2. Mounting the Compact IQ™ Brake Control Unit
-
Orientation Requirements:
- Arrow on the unit must point in the direction of travel.
- Unit must be horizontal within ±20° and parallel to direction of travel.
-
Mounting Options:
- Use the provided bracket and screw for secure installation.
- Use the foam pad for adhesive mounting.
3. Wiring Instructions
Option 1: Plug & Play
- Locate factory tow package harness under the dash.
- Connect vehicle-specific Plug & Play harness to the tow package harness.
- Connect the other end to the brake control unit.
Option 2: Universal Installation
- Remove the Plug & Play Connector and splice wires as follows:
- Black Wire: Positive Battery (+) via 20A/30A Circuit Breaker.
- White Wire: Ground (-) to Battery Negative Terminal.
- Red Wire: Cold side of stoplight switch.
- Blue Wire: Brake output to trailer connector.
- Route wires away from the radio antenna to reduce interference.
Wiring Diagram:
- Black → Positive Battery (+)
- White → Ground (-)
- Red → Cold Side Stoplight Switch
- Blue → Brake Output to Trailer
Controls & Indicators:
LED Indicator:
- Off: No trailer detected or unit asleep.
- Green: Trailer detected; unit active.
- Red: Brakes applied (pedal or manual override).
- Flashing Red: Wiring issues (shorted brake magnets, ground connection failure).
Power Output Control:
- Adjusts maximum braking power. Rotate clockwise for more power.
Boost Control:
- Boost Levels:
- B0: Off
- B1: 15% initial braking power.
- B2/B3: 30% initial braking power for heavier trailers.
Safety Notes:
- Test Brake Control settings each time a trailer is connected.
- Adjust trailer brakes every 3,000 miles.
- Never exceed the lowest-rated capacity of the vehicle, hitch, or trailer.
- Do not use Boost settings on icy road conditions.
Specifications:
- Compatible with 12V electric trailer brakes for up to 3 axles.
- Requires 20A circuit breaker (1–2 axles) or 30A circuit breaker (3 axles).
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.
Warranty:
The product comes with a [X]-year warranty that covers defects in materials and workmanship. For complete warranty instructions, please download the full installation PDF.
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