bing tracking image
  1. Tow Bar Wiring
  2. Ford
  3. Bronco
  4. 2021
  5. Roadmaster
FITS 2021 Ford Bronco
Roadmaster Universal Wiring Kit with Smart Diodes for Variable Voltage LED Tail Lights

Roadmaster Universal Wiring Kit with Smart Diodes for Variable Voltage LED Tail Lights

Item # RO44FR
Our Price: $135.24
Tow Bar Wiring
Confirmed to Fit
2021 Ford Bronco

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

This item qualifies for Free Shipping
Shipping Weight: 1.7 lbs
Add to cart
In Stock
Roadmaster Splices into Vehicle Wiring - RO44FR
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Need help with installation?
Locate installers near me
Call etrailer.com at 1-800-940-8924 for expert service. We are your Ford tow bar wiring experts, and offer a great price. etrailer.com carries a complete line of Roadmaster products for your Ford Bronco 2021. Roadmaster Universal Wiring Kit with Smart Diodes for Variable Voltage LED Tail Lights part RO44FR from Roadmaster can be ordered online at etrailer.com. Complete tow bar wiring installation instructions and technical support.
  • All Info
  • Reviews (36)
  • Q & A (0)
  • Photos

2021 Ford Bronco - Roadmaster Universal Wiring Kit with Smart Diodes for Variable Voltage LED Tail Lights

  • Diode Kit
  • Splices into Vehicle Wiring
  • Universal
  • Roadmaster

The diodes in this kit convert the 12V signal from your RV to a 9V signal, ensuring that your car's variable voltage tail lights function as intended. 4-Wire harness included for installation. Adapter cord and plug sold separately.


Features:

  • Wiring kit lets you connect your RV's tail, brake, and turn signal lights to your towed car's lighting system
  • Smart diodes ensure that your variable voltage, LED tail lights function as they should while your car's being towed
    • Converts the 12V signal from your RV's wiring to a 9V signal so your tail lights work as intended
    • Prevents electrical feedback that can damage your vehicle's electrical components
  • Power coated aluminum casing on diodes is corrosion resistant and provides protection from the elements
  • Kit includes 2 smart diodes, wiring harness, split loom, ring terminals, and zip ties
  • Brake light relay (RM-88400 sold separately) may be required if used with supplemental braking system
  • Made in the USA


Specs:

  • Maximum amperage: 5 amps
  • Maximum voltage: 16 volts
  • Wiring harness length: 27'
  • Limited lifetime warranty


This smart diode wiring kit lets you connect your RV's tail, brake, and turn signal lights to your towed car's lighting system so that you'll have the signal lights necessary for flat towing your vehicle.


Because your vehicle has variable voltage tail lights, you cannot use a standard diode wiring kit to get these signal lights. If regular diodes are used on a vehicle that has variable voltage tail lights, the bulbs will light up as though the towed car is braking whenever the tail lights are on. In other words, there will be no difference between the vehicle's brake lights and running lights. This is because variable voltage tail lights use the same wire to power both the brake lights and tail lights. They do this by using a 12-volt signal for brake lights and a 9-volt signal for tail lights.


Smart diodes correctly modulate the 12-volt signal coming from your RV to activate only the intended circuit. The result is that your vehicle's tail lights look and function as intended.


This wiring kit is designed to work with LED lights only. If your vehicle has incandescent lights, you'll need to use the smart diode kit designed for incandescent tail lights (RO94FR - sold separately) instead.


When installing this kit, you will need to add either a 4-way or 6-way round electrical connector to the front of your vehicle so you can connect to your RV when you're ready to tow. Use one of Roadmaster's coiled cable kits (RM-164-7 or RM-146-7 - sold separately) to get both the connector and the adapter cord needed for fast, easy hookup.


If your RV has separate tail light wiring, wherein the brake and turn signals run on separate wires, you'll need a wiring converter (RM-732 - sold separately) to complete this installation.


Smart Diode Wiring Diagram


153789 Roadmaster Wiring Kit with Smart Diodes for Variable Volt and LED Bulbs

Installation Details RO44FR Installation instructions

Customer Satisfaction Score:


Customer Reviews

Roadmaster Universal Wiring Kit with Smart Diodes for Variable Voltage LED Tail Lights - RO44FR

Average Customer Rating:  4.8 out of 5 stars   (36 Customer Reviews)

The diodes in this kit convert the 12V signal from your RV to a 9V signal, ensuring that your car's variable voltage tail lights function as intended. 4-Wire harness included for installation. Adapter cord and plug sold separately.

by:

This system works great. Installed on a 2023 Equinox LT (AWD). It was a little challenging running the wiring from the engine compartment to the taillights of the car, but not overly complex. The etrailer video is very helpful.



by:

Only 3 feet of split loom and kit uses blinker lights as brakes.

Etrailer Expert

Katrina D.

10/16/2023

After looking at the layout of a Chevy Equinox, you really would only need maybe a couple of feet of loom, Most of the wiring should be tucked up against the vehicle. As for the blinker lights, I need to know what model your Equinox is, in order for me to better assist you.



by:

Worked as described easy video to following in installation



by:

One of the diode was inop

Etrailer Expert

Brooke M.

11/29/2023

This part does come with a warranty and I can see that our customer service team is already working on sending you a replacement. Thank you for letting us know so we could get you a working part!



by:

It works as advertised. Installation not too hard, be patient, read the directions multiple time, you are dealing with very small wires, make good connections.



by:
Ford

We were at a stand still. Wiring the lights from my motorhome to my ford pickup. Sheryl saved the day, without hesitation, she described just what we needed.
Always turn to etrailer for hitch, electrical and all towin needs. Never let me down.



by:

Great and fast service!!!
Thank you!
!!



by:

Fast delivery



by:
2021 Ford F-150

Great service and fast shipping.

William

12/5/2022

The product is working great. I have had no problems with it so far. I think it is a great product and I installed it myself.



by:

Everything we ordered worked perfectly.



by:

Product was delivered ahead of scheduled time, this company is great, will definitely buy from them again



by:



by:

Good product does what it says and easy to install.



by:



by:



by:



by:



by:



by:
2022 FordBronco



by:



by:



by:



by:



by:



by:


25
36
Show More Reviews

See what our Experts say about this Roadmaster Tow Bar Wiring

  • Parts Needed To Flat Tow a 2021 Ford F-150
    In order to flat tow a 2021 Ford F-150 you'll need a few items such as a tow bar, safety cables, base plate kit, braking system, wiring harness as well as a few other smaller miscellaneous items. I have attached my recommended list for these parts below. Roadmaster Direct-Connect Base Plate Kit part # RM38VR Roadmaster Nighthawk All Terrain Tow Bar part # RM-676 Blue Ox Patriot Portable Braking System part # BLU37TR Roadmaster Brake-Lite Relay Kit part # RM-88400 Roadmaster Universal Wiring...
    view full answer...
  • Is Roadmaster Smart Diode Kit Required for a 2020 Ford Edge ST
    To flat tow your 2020 Ford Edge you will need "smart diodes" as included in the Roadmaster # RO44FR Universal Kit. However, I would go ahead and get the Roadmaster # RM38FR kit that additionally includes the 7-way to 6-way cable and connectors that you will also need. Additionally, your Edge will drain its battery while being towed. I recommend the RM-766 battery disconnect unless you want to manually wrench the battery cables off every time that you unhitch and rehitch! Flat towing...
    view full answer...
  • Height Comparison for 2021 Chevy Equinox Roadmaster Direct-Connect and Crossbar Base Plate Kits
    The crossbar height is actually the same for the Direct-Connect # RM-523193-5 and Crossbar-Style # RM-523193-4 base plate kits that fit your 2021 Chevy Equinox. Roadmaster lists both at 18-1/2" along with a note saying this might vary depending on the sub-model and tire size (which is normally the case anyways). The Crossbar-Style looks like it's taller but that's just because of the design. The tow bar actually sits a little lower with that setup which is why they have the same height. I...
    view full answer...
    Image 1 for
  • Parts Needed to Flat Tow 2021 Ford F-150
    The best flat tow set-up for a 2021 Ford F-150 is as follows: - Base Plates, Roadmaster Direct-Connect Base Plate Kit, # RM38VR - Tow Bar, Roadmaster Nighthawk All Terrain, # RM-676 (includes the needed safety cables) - Wiring for Indicator Lights, Roadmaster Universal Wiring Kit, # RO44FR - Supplemental Braking System, Blue Ox Patriot Portable Braking System, # BLU37TR along with, Brake-Lite Relay, # RM-88400 and Battery Charge Line Kit, # RM-156-25 The Roadmaster Direct-Connect Base...
    view full answer...
  • Parts Needed to Flat Tow 2022 Chevrolet Equinox
    Yes, I suggest the Roadmaster Direct-Connect Base Plate Kit, # RM-523193-5. This fits all trim levels WITHOUT lower active grill shutters. For a Blue Ox Base Plate Kit, you can use # BX1730. For a complete flat tow arrangement for a 2022 Chevrolet Equinox, you will need a base plate kit, safety cables and a wiring solution to synchronize your RV’s lights to the Equinox. You will also need a supplemental braking system to synchronize your RV and towed vehicle's brakes. Once the selected...
    view full answer...
  • Best 2024 Ford Maverick Hybrid Parts for Flat Towing Behind a 2023 Tiffin Phaeton Motorhome
    I'd be more than happy to help you get your 2024 Ford Maverick Hybrid ready to tow, Bruce! Here are the parts I recommend using: - Roadmaster Direct-Connect Base Plate Kit # RM97RR - Nighthawk All-Terrain Tow Bar w/ LED Lights # RM-676 - Light Kit # RO44FR for LED Tail Lights OR # RM-154 for Standard Tail Lights - Battery Charge Line Kit # RM-156-25 - Demco Air Force One Flat Tow Brake System for RVs w/ Air Brakes # DM55MV - High-Low Adapter (see attached article - base plate height...
    view full answer...
  • Diode Tow Bar Lighting Kit that Fits 2015 Ford Edge Hybrid with LED Taillights
    I checked with Roadmaster on this and found out that the hybrid versions of your 2015 Ford Fusion with the LED taillights require a different diode setup which is why you are experiencing the problems you've mentioned using the # RM-154. So instead you would need the diode kit part # RO44FR for just the diodes and wiring or part # RM38FR for the kit that includes the coiled tow bar wiring and connectors.
    view full answer...
  • Diode Wiring Needed To Flat Tow A 2023 Ford Bronco
    Hey Matt. The Roadmaster Universal Hy-Power Diode Wiring Kit # RM-152 would work for your 2023 Ford Bronco unless you have variable voltage tail lights. Variable voltage tail lights use the same wire for the brake signal and running lights instead of the standard turn/brake wire setup. To determine if you have variable voltage tail lights you'll need to pull the tail light out to get to the wiring and test wires with a probe tester # PTW2993 in order to see if the same wire powers both...
    view full answer...
  • Complete Roadmaster Flat Towing Parts List For 2021 Ford F-150
    Sure thing, we can get your 2021 Ford F-150 set up to be flat towed with parts from Roadmaster. I'll list out all the parts you need to make it simple to order: - Base Plate Kit: Roadmaster Direct-Connect Base Plate Kit # RM38VR - Tow Bar: Roadmaster Nighthawk All Terrain, Non-Binding Tow Bar # RM-676 - Wiring Kit (For LED Lights): Roadmaster Wiring Kit w/ Smart Diodes for Variable Voltage LED Tail Lights # RO44FR or - Wiring Kit (For Incandescent Lights): Roadmaster Wiring Kit w/ Smart...
    view full answer...
  • Parts Needed To Wire Tail Lights Separate From Brake Lights When Flat Towing a 2023 GMC Sierra 1500
    To wire up the lights on your 2023 GMC Sierra 1500 so the turn signals operate separately from the brake lights you will need a few extra parts. To begin you do not need the Roadmaster Universal Wiring Kit with Smart Diodes # RO44FR as you do not have variable voltage tail lights on your Sierra. Instead you will need a Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit # RM-15267 which will connect to a Curt 2 to 3 Wire Tail Light Converter # C56196. This is the opposite of the Converter...
    view full answer...
  • Parts Needed to Flat Tow 2022 Ford F-150 Hybrid 4x4
    Yes, your 2022 Ford F-150 hybrid with 4-wheel drive can indeed be flat towed, and in order to do so you'll need a number of parts, which I'll go ahead and list for you. - Base Plate Kit: Roadmaster Direct-Connect Base Plate Kit # RM38VR - Tow Bar: Roadmaster Nighthawk All Terrain, Non-Binding Tow Bar # RM-676 - Wiring Kit - Incandescent Tail Lights: Roadmaster Universal Wiring Kit with Smart Diodes # RO94FR or - Wiring Kit - LED Tail Lights: Roadmaster Universal Wiring Kit with Smart...
    view full answer...
  • 2024 Ford Maverick Roadmaster Flat Towing Parts Recommendations
    I really like the Roadmaster flat towing products (with the exception of their brake systems) so I'm glad you asked about them for your 2024 Ford Maverick! Here are the parts I recommend using for flat towing your vehicle: - Roadmaster Direct-Connect Base Plate Kit # RM97RR - Roadmaster Nighthawk All-Terrain Tow Bar w/ LED Lights # RM-676 - Wiring Kit # RO44FR for LED Lights OR # RM-154 for Non-LED Lights - Battery Charge Line Kit # RM-156-25 - Brake System # DM26VR for air OR #...
    view full answer...
    Image 1 for
  • Roadmaster Parts For Flat Towing 2023 Ford Edge ST
    Yes, per the owner's manual I looked up, so long as you have the 2.7L engine you can flat tow your 2023 Ford Edge ST. The warranty will not be affected, and Roadmaster does indeed have the parts for your vehicle. To make it easy for you to order, I'll go ahead and list them all out: - Base Plate Kit: Roadmaster Direct-Connect Base Plate Kit # RM-524460-5 - Tow Bar: Roadmaster Falcon All Terrain, Non-Binding Tow Bar # RM-522 - Roadmaster Safety Cables # RM-645 - Wiring Kit: Roadmaster...
    view full answer...
  • All Parts Needed to Flat Tow 2020 Chevy Equinox Premier AWD
    Yes, you sure can flat tow your 2020 Chevy Equinox Premier AWD, and there are a number of parts needed for your vehicle, which I'll go over for you. - Base Plate Kit: Roadmaster Direct-Connect Base Plate Kit # RM-523193-5 - Tow Bar: Roadmaster Falcon All Terrain, Non-Binding Tow Bar # RM-522 - Safety Chains: Roadmaster 80" Coiled Safety Cables # RM-653 - Wiring Kit - For LED Tail Lights: Roadmaster Universal Wiring Kit with Smart Diodes for Variable Voltage LED Tail Lights # RO44FR OR -...
    view full answer...
  • All Parts Needed to Flat Tow 2023 Chevy Equinox
    We can definitely get your 2023 Chevy Equinox set up to be flat towed, and there are a number of parts you will need, so I'll go ahead and list them out for you like you wanted to make it easy to order: - Base Plate Kit: Roadmaster Direct-Connect Base Plate Kit # RM-523193-5 - Tow Bar: Roadmaster Nighthawk All Terrain, Non-Binding Tow Bar # RM-676 - Wiring Kit - LED Tail Lights: Roadmaster Universal Wiring Kit with Smart Diodes # RO44FR OR - Wiring Kit - Incandescent Tail Lights: Roadmaster...
    view full answer...
  • 2024 Chevy Equinox Base Plate Kit and Wiring to Match up with Blue Ox Tow Bar
    Hey Joe, thanks for reaching out! Since you already have the Blue Ox tow bar you'll want the Curt Custom Base Plate Kit # C28FR for your 2024 Chevy Equinox because it matches up directly with your tow bar. Then for wiring I recommend the Roadmaster wiring which is part # RM26FR for an LS or LT and then part # RM38FR for a Premier. If you already have a 6-Way to 7-Way adapter then you need parts # RO94FR and # RO44FR respectively. It looks like you'll also need to disconnect your battery...
    view full answer...
  • Recommended Flat Tow Wiring Kit For A 2023 Ford F-150 Lariat With LED Tail Lights
    I recommend The Roadmaster Universal Wiring Kit with Smart Diodes # RO44FR for flat towing your 2023 Ford F-150. The smart diodes in the kit will ensure that your variable voltage, LED tail lights will function as they should while your truck's being towed. You may also need a Brake Light Relay # RM-88400 if you're using a supplemental braking system. Your F-150 will also require a Battery Charge Line Kit # RM-156-25 when used for flat towing. Using this kit will keep the battery from...
    view full answer...
  • Tow Bar Wiring For A 2021 Ford F-150 With Incandescent & LED Taillights
    The best way you can determine if your 2021 Ford F-150 has LED or Incandescent lights is to call the dealer with your VIN number and they should be able to tell you. If your vehicle has LED lights, you can use the Roadmaster Universal Wiring Kit with Smart Diodes for Variable Voltage LED Tail Lights # RO44FR. Or If your vehicle has incandescent lights, you can use the Roadmaster Universal Wiring Kit with Smart Diodes for Variable Voltage Incandescent Tail Lights # RO94FR. You will also...
    view full answer...
  • Parts Needed to Flat Tow 2022 Chevrolet Equinox LS
    To flat tow your 2022 Chevrolet Equinox LS, you will need a base plate kit installed on your Equinox and a tow bar to connect it to your RV. Safety cables are a needed item in case the tow bar fails. And a wiring solution to synchronize your RV’s lights to the 2022 Chevrolet Equinox along with a supplemental braking system to synchronize your RV and towed vehicle's brakes. Once the selected base plate is installed and the tow bar attached to your RV it needs to be +/- 3" of being level...
    view full answer...
  • Where Does Running Light Circuit of 2020 Ford Edge Run to Roadmaster Smart Diode Kit
    As long as you find a circuit that that has the running lights and the stoplights on your vehicle that would be all that you would need to run to the diodes of the Roadmaster smart diode kit part # RO44FR. The taillight circuit from your tow vehicle (the motorhome) would run to the middle pin of the diode on the side that has three. On your Ford Edge the wire that runs to your vehicle taillight is the one labeled car brake out.
    view full answer...
  • Parts Needed To Flat Tow A 2019 Chev Equinox 2.0L AWD
    You're correct that the Roadmaster Nighthawk All Terrain, Non-Binding Tow Bar w/ LED Lights # RM-677 is for Blue Ox baseplates and would not be a compatible fit for the Roadmaster Direct-Connect Base Plate Kit # RM-523193-5. You'll instead need the # RM-676 Nighthawk, which is compatible with Roadmaster Direct-Connect style baseplates. The Nighthawk comes with the 6-way to 7-way cable and the socket but you'll still need the diodes and wiring to transfer your motorhome's signals through...
    view full answer...
  • Do I Need a High Low Adapter to Flat Tow a 2024 Chevy Equinox RS?
    No, you shouldn't need one. When the Roadmaster Direct-Connect Base Plate Kit item # RM-523193-5 is installed on the 2024 Chevy Equinox RS it measures 15-3/4" from the ground to the center of the arms. In order to be considered level the tow bar needs to be within 3" of the base plate arms. I checked Roadmaster's website and didn't see any adapters for a flag pole or Starlink mount. The best I can offer is the Camco Hitch-Mounted Flagpole Holder for 2" Hitch Receivers item # CAM51611. Here...
    view full answer...
  • Flat Tow Wiring for 2020 Jeep Gladiator and 2022 Chevy Equinox with LED Tail Lights
    Thank you for all of the information! For your 2020 Jeep Gladiator I recommend using the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit # RM-15267 and then for your 2022 Chevy Equinox with LED lights I recommend the Roadmaster Universal Wiring Kit # RO44FR and 6-Wire Trailer Connector # RM-910030-7. The Jeep doesn't require special diodes so you can use the standard wiring kit and then pair up the umbilical with the special wiring and connector needed for the LEDs on your Chevy. I've...
    view full answer...
  • Recommended Flat Towing Setup for a 2022 Ford F-150
    It sounds like you're looking for a complete flat towing setup for your 2022 Ford F-150. If that's what you're after, you're going to need: -A base plate kit, # BLU33FR, -The Blue Ox Avail # BX7420 you mentioned you wanted to use, -The Demco Air Force One # SM99243 you also mention in addition to the Roadmaster Brake-Lite Relay Kit for Towed Vehicles # RM-88400, & -A wiring harness # RO44FR with the charge line kit # RM-156-25.
    view full answer...


< Previous
12



Do you have a question about this Tow Bar Wiring?


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Joshua S
Video Edited:
Joshua S
Employee Dustin K
Video Edited:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee John S
Video Edited:
John S
Employee Mike S
Written by:
Mike S
Employee Michael B
Installed by:
Michael B
Employee Jacob H
Test Fit:
Jacob H
Employee Ryan G
Test Fit:
Ryan G
Employee John A
Test Fit:
John A
Employee Thomas T
Video by:
Thomas T
Employee Cooper S
Video by:
Cooper S

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.


Product Experts Available Now!
Call 1-800-940-8924