Does 2023 Ford Bronco Need Stoplight Relay with Roadmaster Smart Diode Kit
Updated 11/17/2025 | Published 12/16/2024 >
Question:
Will I still need a Brake Light Relay if i install this RM38FR kit? Flat towing a 2022 Ford Bronco 6 series with 2.3L.
asked by: Nick B
0
Expert Reply:
Hey Nick, so the Roadmaster light kit part # RM38FR is a fit for your 2023 Ford Bronco as long as it has the LED lights. Whether or not you'll need a brake light relay is going to be based on whether or not your stoplights light up on the vehicle when it is off and you press the brake pedal. If so you would need one, if not you wouldn't.
expert reply by:
Jameson C
0
Product Page this Question was Asked From
Roadmaster Smart Diode Kit for Variable Voltage LED Tail Lights - 7-Way to 6-Way Adapter Cord
- Flat Tow Wiring Harness
- Splices into Vehicle Wiring
- Diode Kit
- Universal Fit
- 7 Blade to 6 Round
- Roadmaster
more information >
Featured Help Information
Instructions
Continue Researching
- Q&A: Full Flat Tow Setup For 2023 Ford F-150 and 2026 Jayco Greyhawk
- Shop: Vehicle Tow Bar Wiring
- Video: Roadmaster Smart Diode Kit Install Guide - 2023 Ford Bronco
- Search Results: trailer wiring
- Search Results: vehicle tow bar wiring
- Search Results: tail lights
- Search Results: charge line
- Shop: Trailer Wiring
- Shop: Vehicle Tow Bar Brake System
- Shop: Base Plate for Tow Bar
- Shop: Roadmaster Battery Charge Line Kit for Towed Vehicles
- Shop: RVpaws V2 Replacement RV Foot Pads for 2" Round Leveling Jack Legs - 9" Round - Qty 2
- Q&A: What Is The Difference Between The Roadmaster Smart Diode Kits RM63MR And RM38FR?
- Shop: Roadmaster Smart Diode Kit for Variable Voltage LED Tail Lights - 7-Way to 6-Way Adapter Cord
- Shop: Roadmaster Smart Diode Kit for Variable Voltage LED Tail Lights
- Shop: Blue Ox Towed Vehicle Battery Charge Line Wiring Harness
- Video: Review of Blue Ox Towed Vehicle Battery Charge Line Wiring Harness - BLU44ER
- Shop: Trailer Hitch
- Q&A: Flat Tow Lighting Solution for 2023 Ford Bronco Badlands with LED Taillights
- Shop: Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Coiled Adapter Cord
- Video: The Low-Down on the Demco Air Force One Flat Tow Brake System for RVs w/ Air Brakes
- Video: Demco Air Force One Flat Tow Brake System for RVs w/ Air Brakes: The Breakdown
- Video: Installing the Demco Air Force One Flat Tow Brake System on a 2024 Ford Bronco
- Shop: Roadmaster Stop Light Switch Kit
- Q&A: Is The Brake-Lite Relay Kit Required With Roadmaster Smart Diode Kit On 2022 Ford Bronco?
- Q&A: Recommended Supplemental Braking System and Flat Towing Set Up for a 2022 Ford Bronco
- Q&A: What Flat Tow Wiring Harness Do I Need for a 2023 Ford Bronco Outer Banks w/ LED Lights?
- Q&A: What are Active or Continuous Power Brakes and are These Brake Installed on a 2014 Ford F-150
- Video: A Closer Look at the RoadMaster BrakeMaster Custom Seat Adapter
- Video: All About the Roadmaster Stop Light Switch Kit


Jameson C.
11/17/2025
Hey Nick, did you get a chance to check whether your Bronco’s brake lights come on when the vehicle is off? Knowing that would confirm if you needed the brake light relay with the Roadmaster light kit. Your update could make it easier for others setting up a similar tow setup.