bing tracking image
  1. Tow Bar Wiring
  2. Roadmaster
  3. Diode Kit
  4. Splices into Vehicle Wiring
  5. Universal
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
lowest price pledge
Retail:$103.40
Our Price: $97.89
You Save: 5%
Tow Bar Wiring

Will this fit?

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

Orders above $99 qualify for Free Shipping
Shipping Weight: 1.76 lbs
Quantity: 
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
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. Lowest Prices for the best tow bar wiring from Roadmaster. Roadmaster Universal Wiring Kit with Smart Diodes for Variable Voltage LED Tail Lights part number RO44FR can be ordered online at etrailer.com or call 1-800-496-5010 for expert service.
  • All Info
  • Reviews (6)
  • Q & A (0)
  • Photos
  • Why etrailer?

Roadmaster Tow Bar Wiring - RO44FR

  • 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

This Product Fits The Following Vehicles





Customer Reviews

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

Average Customer Rating:  5.0 out of 5 stars   (6 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:

Good product does what it says and easy to install.




by:
2021 Ford F-150

Great service and fast shipping.




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:
2018 Lincoln Navigator




by:



6
6

See what our Experts say about this Roadmaster Tow Bar Wiring

  • RM-152 Diode Kit Compatibility With A 2021 Jeep Gladiator With LED Tail Lights
    According to Roadmaster, if your 2021 Jeep Gladiator is equipped with ParkSense proximity sensors then you'll need the Roadmaster Universal Wiring Kit with Smart Diodes for Variable Voltage LED Tail Lights # RO44FR. If you do not have the ParkSense feature then you'll be fine with the Roadmaster Universal Hy-Power Diode Wiring Kit # RM-152.
    view full answer...
  • Do I Need To Have A 3-Wire to 2-Wire Converter To Flat Tow a 2022 Ford F-150?
    Ultimately you do not need a converter as you can wire the tail lights on your 2022 Ford F-150 to operate as brake and turn signals just like the lights on your motorhome. You will need to use the Roadmaster Universal Wiring Kit with Smart Diodes # RO44FR as your F-150 has variable voltage LED lights that can be damaged if these diodes are not used. The diodes lower the voltage to the lights from 12 volts to 9 volts, protecting the tail lights. Your F-150 should also have a Battery Charge...
    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...
  • Stop Light Switch and Diodes for LED Lights when Flat Towing a 2019 Chevy Equinox
    For your 2019 Chevy Equinox you will need a separate brake switch. You will want the Roadmaster Stop Light Switch Kit item # RM-751489. You will be able to use your existing LED tail lights but you will need the Roadmaster Universal Wiring Kit with Smart Diodes for Variable Voltage LED Tail Lights item # RO44FR. The diodes in this kit convert the 12V signal from your RV to a 9V signal, ensuring that your Equinox's LED tail lights function as intended.
    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...
  • 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...
  • 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 3 Portable Braking System, # BRK2019 along with, Brake-Lite Relay, # RM-88400 and Battery Charge Line Kit, # RM-156-25 The Roadmaster Direct-Connect...
    view full answer...
  • Compatible Base Plate For A 2021 Chevy TrailBlazer Activ AWD
    If your 2021 Chevy TrailBlazer Activ AWD has a 1.3L Turbo engine then you will be able to use the Roadmaster Direct-Connect Base Plate Kit - Removable Arms # RM35FR. The RS base plates would not be compatible with your vehicle. As for the difference between Roadmaster and Blue Ox, Roadmaster manufactures all of their equipment in house, in the US, and is top tier in quality. While Blue Ox is a good brand, their quality and customer service comes in second place. Roadmaster's tech service,...
    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...
  • Recommended Flat Tow Wiring Kit For a 2021 Ford F-150 Lariat with LED Tail Lights.
    I recommend the Roadmaster Universal Wiring Kit with Smart Diodes for Variable Voltage LED Tail Lights # RO44FR for flat towing your 2021 Ford F-150. These smart diodes are specifically designed to work with the LED tail lights on your F-150. Currently there is not a plug and play version available so the diodes will need to be spliced into the tail light wiring. Your F-150 does require a Battery Charge Line Kit # RM-156-25 be used when you are flat towing. This will keep the battery...
    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...
  • Difference Between Roadmaster Direct-Connect & Crossbar-Style Base Plates on 2021 Ford F-150
    The difference between the Direct-Connect # RM38VR and Crossbar-Style # RM58VR that fit your 2021 Ford F-150 is the type of tow bar that they accept, and the ease of connection. The direct-connect base plates allows you to simply connect your tow bar right to the base plate, eliminating the need for a middle man - the crossbar - so it is definitely the route I recommend: - Roadmaster Direct-Connect Base Plate Kit # RM38VR Along with the base plates, there are a number of other things...
    view full answer...
  • Can a Battery Disconnect be Used When Flat Towing 2022 Chevrolet Equinox
    According to the owner's manual for the 2022 Chevrolet Equinox, it is required to charge the battery of the towed vehicle during recreational vehicle towing. Disconnecting the battery is safe, but there would be no reason to add a battery disconnect. You will, however, want to use the Roadmaster Battery Charge Line Kit for Towed Vehicles # RM-156-25. If your motorhome does not already have a charge line kit you will also need the Roadmaster Battery Charge Line Kit for Motorhomes # RM-156-75....
    view full answer...
  • 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 3 Portable Braking System part # BRK2019 Roadmaster Brake-Lite Relay Kit part # RM-88400 Roadmaster Universal...
    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...
  • 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...
  • 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...
  • Parts Needed to Flat Tow 2021 Ford F-150 With Diesel Pusher
    To flat tow you need a tow bar, safety cables, base plate kit, braking system, wiring harness as well as a few other smaller miscellaneous items. The Roadmaster Nighthawk All Terrain, Non-Binding Tow Bar for Blue Ox Base Plates, # RM-677 (safety cables included) is a great tow bar. To use this for towing your 2021 Ford F-150 you will want the Blue Ox Base Plate Kit, # BLU33FR. These base plates bolt directly to your chassis, so no welding is required. For lighting I suggest the Roadmaster...
    view full answer...
  • Will the Hopkins Custom Tail Light Wiring Kit for Towed Vehicles Work on a 2015 Ford Edge SEL
    I do have an option but the Hopkins Custom Tail Light Wiring Kit part # HM56011 will only fit the 2015 Ford Edge Sport/Titanium, not the 2015 Ford Edge SEL. The 2015 Ford Edge SEL has variable voltage taillights which is where the issue lies. Therefore, you will need to use the Roadmaster Wiring Kit part # RO44FR which requires splicing or the Pilot Magnetic Tow Lights part # NV-5164 for example which does not require splicing. There are no plug and play flat-tow wiring harnesses for a...
    view full answer...
  • Recommended Flat Towing Equipment For A 2016 Ford Edge
    To know if your vehicle is capable of flat towing you'll have to read your owner's manual. There are very specific instructions to follow if it is flat towable to ensure the safety of your vehicle. From what I can find in the online owner's manual "You can tow your 2.7L EcoBoost or 3.5L (6F50 or 6F55) equipped vehicle with all four wheels on the ground" but none other are listed so I recommend reaching out to Ford. If it is capable you'll need a tow bar, tow bar wiring kit, base plate,...
    view full answer...




  • Why etrailer.com?

    At etrailer.com we guarantee:
  • Highest quality tow bar wiring for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate tow bar wiring information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Joshua S
Video by:
Joshua S
Employee Mike S
Written by:
Mike S
Employee Michael B
Installed by:
Michael B
Employee Ryan G
Test Fit:
Ryan G

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.