Reese Compact IQ Hidden Trailer Brake Control for 99‑02 Chevy Silverado 1500 2500 3500 w/ Plug Play Wiring Adapter Proportional Trailer Brakes Module Box Controller 1‑3 Axle
Model: 8508700 3025-8Brake Control Unit
Mounting hardware and bracket
Vehicle specific Plug and Play Wiring Adapter
Fits The Following Vehicles
1999 - 2002 Chevrolet, Silverado 1500, All Styles
2000 - 2002 Chevrolet, Suburban 1500, w/Amber Turn Signals
1999 - 2002 Chevrolet, Silverado 2500, All Styles
2000 - 2002 Chevrolet, Suburban 2500, w/Amber Turn Signals
2001 - 2002 Chevrolet, Silverado 3500, All Styles
Brake Control Specs:
| Part Number | 8508700 |
| Brand | Reese |
| Type | Proportional |
| Axles | 1 to 3 axle trailers |
| Warranty | Limited Lifetime |
| Installation Instructions |  |
2-Plug Wiring Adapter Specs:
| Part Number | 3025 |
| 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: 99 00 01 02 1999 2000 2001 2002
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Product Details
- Brand: Reese
- Model: 8508700 3025-8
- 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
1999 - 2002 Chevrolet, Silverado 1500, All Styles
2000 - 2002 Chevrolet, Suburban 1500, w/Amber Turn Signals
1999 - 2002 Chevrolet, Silverado 2500, All Styles
2000 - 2002 Chevrolet, Suburban 2500, w/Amber Turn Signals
2001 - 2002 Chevrolet, Silverado 3500, All Styles
Brake Control Specs:
| Part Number | 8508700 |
| Brand | Reese |
| Type | Proportional |
| Axles | 1 to 3 axle trailers |
| Warranty | Limited Lifetime |
| Installation Instructions | |
2-Plug Wiring Adapter Specs:
| Part Number | 3025 |
| 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: 99 00 01 02 1999 2000 2001 2002
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Reese Compact IQ Hidden Trailer Brake Control for 99-02 Chevy Silverado 1500 2500 3500 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: 302500
Tools Required:
- Circuit Tester
Step-by-Step Instructions:
Step 1: Locate the Vehicle’s Electric Junction Box
- Locate the vehicle’s black Electric Junction Box:
- Inside the vehicle, underneath the dashboard, to the left of the steering column, just above the carpet.
- Remove the junction box cover to expose the connection points.
- Find the electric trailer brake connection point:
- Located in the top row, second slot from the left.
Step 2: Plug in the Brake Control Adapter
- Plug the brake control adapter into the mating connection point in the Electric Junction Box.
- Use a circuit tester to verify that the adapter has battery (+) power supplied.
Step 3: Install Additional Wiring if Power Is Not Supplied
If power is not present at the Electric Junction Box, follow these steps:
A. Vehicle Brake Control Feed Wire (Blue):
- Open the vehicle’s hood and locate the black Electrical Center Box on the driver’s side.
- Remove the lid and cover of the Electrical Center Box.
- Locate the blue brake control feed wire. This may require temporarily removing the vehicle’s support brace.
B. Vehicle Battery (+) Power Supply Wire (Red):
- In the same location, find the red battery (+) power supply wire.
- Attach and route the power wire as specified in the brake control manufacturer’s instructions.
- Install an in-line fuse or circuit breaker to protect the circuit.
Step 4: Connect the Brake Controller
- Plug the brake control adapter into the vehicle’s electric brake control harness connector.
- Follow the brake control manufacturer’s installation instructions for wiring, mounting, and securing the brake controller.
Warnings:
- Circuit Overload:
- Do NOT exceed the lower of:
- Manufacturer’s towing rating, or
- Maximum Capacity: 4 axles / 8 brakes (24 amps).
- Do NOT exceed the lower of:
- Overloading circuits may cause fires or electrical damage.
- Always follow the vehicle owner’s manual and brake control installation instructions.
Wiring Overview:
- Brake Control Feed (Blue): Sends brake signal to trailer brakes.
- Battery Power Supply (Red): Provides fused power to the brake controller.
- Ground: Grounds the controller to the vehicle.
- Stop Lamp Switch (Input): Signals braking input to the brake controller.
Final Notes:
- Verify all connections are secure and wires are properly routed away from sharp edges or heat sources.
- Use a circuit tester or connect a trailer to confirm proper operation.
- Periodically inspect the wiring system for damage or loose connections.
End of Instructions
Installation Instructions for Electric Trailer Brake Control Wiring Adapter
Part Number: 302500
Tools Required:
- Circuit Tester
Step-by-Step Instructions:
Step 1: Locate the Vehicle’s Electric Junction Box
- Locate the vehicle’s black Electric Junction Box:
- Inside the vehicle, underneath the dashboard, to the left of the steering column, just above the carpet.
- Remove the junction box cover to expose the connection points.
- Find the electric trailer brake connection point:
- Located in the top row, second slot from the left.
Step 2: Plug in the Brake Control Adapter
- Plug the brake control adapter into the mating connection point in the Electric Junction Box.
- Use a circuit tester to verify that the adapter has battery (+) power supplied.
Step 3: Install Additional Wiring if Power Is Not Supplied
If power is not present at the Electric Junction Box, follow these steps:
A. Vehicle Brake Control Feed Wire (Blue):
- Open the vehicle’s hood and locate the black Electrical Center Box on the driver’s side.
- Remove the lid and cover of the Electrical Center Box.
- Locate the blue brake control feed wire. This may require temporarily removing the vehicle’s support brace.
B. Vehicle Battery (+) Power Supply Wire (Red):
- In the same location, find the red battery (+) power supply wire.
- Attach and route the power wire as specified in the brake control manufacturer’s instructions.
- Install an in-line fuse or circuit breaker to protect the circuit.
Step 4: Connect the Brake Controller
- Plug the brake control adapter into the vehicle’s electric brake control harness connector.
- Follow the brake control manufacturer’s installation instructions for wiring, mounting, and securing the brake controller.
Warnings:
- Circuit Overload:
- Do NOT exceed the lower of:
- Manufacturer’s towing rating, or
- Maximum Capacity: 4 axles / 8 brakes (24 amps).
- Do NOT exceed the lower of:
- Overloading circuits may cause fires or electrical damage.
- Always follow the vehicle owner’s manual and brake control installation instructions.
Wiring Overview:
- Brake Control Feed (Blue): Sends brake signal to trailer brakes.
- Battery Power Supply (Red): Provides fused power to the brake controller.
- Ground: Grounds the controller to the vehicle.
- Stop Lamp Switch (Input): Signals braking input to the brake controller.
Final Notes:
- Verify all connections are secure and wires are properly routed away from sharp edges or heat sources.
- Use a circuit tester or connect a trailer to confirm proper operation.
- Periodically inspect the wiring system for damage or loose connections.
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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