bing tracking image
  1. Tow Bar Wiring
  2. Jeep
  3. Wrangler Unlimited
  4. 2012
  5. Roadmaster
FITS 2012 Jeep Wrangler Unlimited
Roadmaster Universal Wiring Kit with Smart Diodes for Variable Voltage Incandescent Tail Lights

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

Item # RO94FR
Our Price: $145.01
Tow Bar Wiring
Confirmed to Fit
2012 Jeep Wrangler Unlimited

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 - RO94FR
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 best technical support and full tow bar wiring installation instructions. Great price Wrangler Unlimited tow bar wiring and expert service. Jeep Wrangler Unlimited, 2012 tow bar wiring by Roadmaster are available from etrailer.com. For expert service call 1-800-940-8924 to order your Roadmaster Universal Wiring Kit with Smart Diodes for Variable Voltage Incandescent Tail Lights part number RO94FR, or order online at etrailer.com.
  • All Info
  • Reviews (54)
  • Q & A (0)
  • Photos

2012 Jeep Wrangler Unlimited - Roadmaster Universal Wiring Kit with Smart Diodes for Variable Voltage Incandescent 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, incandescent 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 incandescent lights only. If your vehicle has LEDs, you'll need to use the smart diode kit designed for LED tail lights (RO44FR - 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


153782 Roadmaster Wiring Kit with Smart Diodes for Variable Volt and Incandescent Bulbs

Installation Details RO94FR Installation instructions

Customer Satisfaction Score:


Customer Reviews

Roadmaster Universal Wiring Kit with Smart Diodes for Variable Voltage Incandescent Tail Lights - RO94FR

Average Customer Rating:  4.7 out of 5 stars   (54 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:
2016 Volkswagen GTI

Installed on my MK7 VW GTI that I tow behind my coach. Took about 2 hours and worked as expected. The instructions are comprehensive but easy to follow.



by:

The staff at etrailer, talked thru and helped put every part I needed into my cart to install my Blus-Ox tow bar…thx



by:

Good advise, Ordered...delivered on time..the best



by:

Extremely impressed I ordered a wiring harness on a Thursday afternoon expecting it it be delivered on Monday we had changed our travel plans to delay our departure untilTuesday However almost miraculously the part was delivered by 8 am the next morning allowing it to be installed the same day I could not believe it and am extremely impressed at their efficiency



by:
Chevrolet TrailBlazer

Smart diodes worked well with my 2023 Chevy Trailblazer. Only two diodes required vs. four that were required in my previous setup on an different vehicle.



by:

Got here in good shape and on time

William

12/29/2023

Worked great boots wore out to soon

Etrailer Expert

Mike L.

12/29/2023

@William Boots? Can you clarify that for us?


by:
Chevrolet Equinox

This kit worked out great for my 2022 Chevy Equinox. I like how it has separate side plates, which make it easier to attach the main bar. The points where it attaches to the frame seem plenty secure. It is important to watch the videos provided by etrailer as Ryan is very thorough and has good tips for installing. I would also recommend installing additional wiring while having the front end off. Overall, I was able to complete in my driveway. The hardest part was sorting out the wiring for whatever braking and tail lights you decide on. William S helped me pick all the necessary components needed for flat towing behind my Jayco RV. I am looking forward to a summer of camping and having more freedom to explore the area, now having a car.



by:

Very helpful, diligent, and kind. Thank you.



by:

Videos and packaging make this much easier than I thiught



by: 02/14/2023
2021 Chevrolet Spark

Installation is Easy & Clear. The most challenging part is getting the Fascia Quarter panels to separate from the clips. I found that there is an additional identical screw a little deeper behind the one that is instructed to remove. If both screws are removed - fascia doesn't have to be tugged on and it easily releases itself without breaking any clips. The Safety Cables are not easily routed away from the belt on the passenger side but there are three factory holes in the body that they can be secured to help keep clear from the belt.



by:

What is there to say except it works and works well!



by:

Video explained well how to install. Very happy with install. Works!



by:

Video (2020 Equinox) easy to follow. Passenger side wiring was TIGHT after making the butt connection from the light wiring TO the diode pack. I suggest adding additional wiring to this junction before connecting to the diode pack. Good use of GREEN wiring in kit, pay attention to video.



by:

It was professional installed. It works as describe no issues

John B.

1/19/2023

Same as my first review: It was professional installed. It works as describe no issues



by:

good product



by:
Chevrolet Spark

Nice wiring kit. Running the wire through the Chevy Spark took a bit of time, but it works nicely.



by:

Everything you need in one package. The service is OUTSTANDING.



by:

I installs this in a couple of hours. Your videos are great help in making installing easier.



by:

Very good installation it does an awesome job



by:

Very fast and free shipping.



by:

Easy to install. Works great.



by:

Easy install, even easier to hookup, and looks great when not in use / barely know it's there.



by:

very nice unit. Easy to install and top quality product



by:

The sales and support folks where very knowledgeable. They were very helpful getting the parts I needed and shipped very quickly. I would recommend them and will be using them again in the future. Thanks again.



by:

Haven’t installed yet, did appreciate the quick arrival of the ordered items.


25
54
Show More Reviews

See what our Experts say about this Roadmaster Tow Bar Wiring

  • 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...
  • Flat Tow Wiring Kit For 2022 Chevy Tahoe Premier
    There is a flat tow wiring kit for your 2022 Chevy Tahoe Premier (which is what I think you meant as there isn't a Premium), but the Hopkins # HM56115 does not fit the Premier models. Your '22 Tahoe has variable voltage taillights, which means multiple electrical signals are on a single wire, so it needs a specific wiring kit: - Roadmaster Universal Wiring Kit with Smart Diodes for Variable Voltage Incandescent Tail Lights # RO94FR The # RO94FR moderates the voltage correctly so that...
    view full answer...
  • Recommended Flat Towing Set Up for a 2022 Chevy Spark
    Thanks! Happy you find our Q and A helpful. I will be able to confirm what parts you will need to flat tow your 2022 Chevy Spark with your current class C motor home and your Newmar class A down the road. I have listed the parts below that you will need along with any relevant installation or review videos applying to your Spark. Tow Bar - Roadmaster Falcon All Terrain, Non-Binding Tow Bar - Motorhome Mount - 2" Hitch item # RM-522 Safety Cables - RoadMaster 64" Double Hook, Straight...
    view full answer...
  • Recommended Base Plate Style For A 2015 Chevy Malibu
    Crossbar-style was Roadmaster's first design and has been getting slowly phased out so I highly recommend going with the Direct-Connect style to avoid any potential compatibility/product availability issues. For your 2015 Chevy Malibu 2.5L I4 Engine - without Active Air Shutter System you'll need the Roadmaster Direct-Connect Base Plate Kit # RM-523178-5. These Direct-Connect style base plates offer a quick and simple installation and have removable arms to provide a clean factory look...
    view full answer...
    Image 1 for
  • 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...
  • Correct Flat Tow Wiring Harness Didoes for 2022 Ford F-150
    The 2022 Ford F-150 (Non-Hybrid) requires special diodes for the flat-tow wiring harness. If you're not using these special diodes then you could run into issues like you described. The correct ones for this vehicle are the Roadmaster Universal Wiring Kit with Smart Diodes; part # RO44FR for vehicles with LEDs or part # RO94FR for vehicles with incandescent. If you are using smart diodes already please let me know and I would be glad to see if I can assist further another way.
    view full answer...
  • Diode Wiring Needed To Flat Tow A 2023 Chevy Equinox LT
    A 2023 Chevy Equinox LT requires smart diodes so you would need the Roadmaster Universal Wiring Kit with Smart Diodes for Variable Voltage LED Tail Lights # RO44FR if you have LED tail lights or the Roadmaster Universal Wiring Kit with Smart Diodes for Variable Voltage Incandescent Tail Lights # RO94FR if you have incandescent tail lights. If you don't have the 6-pole socket then you'll also want part # RM-910030-7 as well.
    view full answer...
  • Parts Needed For Flat Towing a 2023 Ford F-150 With Blue Ox Tow Bars and Patriot Braking System
    Yes, you will be able to use your Blue Ox Tow Bar # BX7420 and Blue Ox Patriot Portable Braking System # BLU37TR on your 2023 Ford F-150. But you will need a 12 Volt Outlet Kit # RM-9332 to power the Patriot braking system as the factory 12 volt will not have power when being flat towed. You will need the Blue Ox Base Plate Kit # BLU33FR for your F-150 along with the necessary wiring components. A Charge Line Kit # RM-156-25 is needed as the battery will be drained by your F-150 and the...
    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...
  • What Parts do I Need to Flat-Tow My Manual 2021 Chevy Spark LT when Using the Nighthawk # RM-676?
    In order to use the Roadmaster Nighthawk Tow Bar # RM-676 on your 2021 Chevy Spark LT with manual transmission without ACTIV, I recommend the following parts: - Roadmaster Direct-Connect Base Plate Kit - Removable Arms # RM-523202-5 - Blue Ox Patriot Portable Braking System # BLU37TR (required by law in most states) - Roadmaster Universal Wiring Kit with Smart Diodes for Variable Voltage Incandescent Tail Lights # RO94FR You will not need safety cables and tow bar wiring since the Nighthawk...
    view full answer...
  • What Parts Do I Need To Flat Tow My 2021 Chevrolet Equinox
    There are a few things that you need to flat tow your 2021 Chevrolet Equinox. You need a base plate, tow bar, supplemental braking system, wiring kit, and safety cables, then you will have flat towing setup for your vehicle. The base plate that I recommend is the Roadmaster Direct-Connect Base Plate Kit - Removable Arms, part # RM-523193-5. It is a direct connect towbar, so you will not need a quick-disconnect crossbar, and it is almost invisible when not in use. This base plate pairs...
    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...
  • Parts Needed to Flat Tow a 2022 Chevy Spark Behind a Motorhome
    In addition to the Roadmaster Base Plate Kit # RM-523202-5 you will need a tow bar, safety cables, wiring, a braking system, and possibly a high-low adapter so that you can flat tow your 2022 Chevy Spark behind your motorhome. I will list my recommendations below: Roadmaster Base Plate Kit - # RM-523202-5 Nighthawk All Terrain Tow Bar - # RM-676 (this comes with safety cables) Wiring Kit with Smart Diodes - # RO94FR Quick Battery Disconnect - # RM-766 (optional) Brake Kit - Part # DM86VR...
    view full answer...
    Image 1 for
  • 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...
  • Correct Wiring Kit for Flat Towing 2018 Chevrolet Malibu
    The wiring kit you need in order to flat tow your 2018 Chevrolet Malibu is the Roadmaster Universal Wiring Kit with Smart Diodes for Variable Voltage Incandescent Tail Lights # RO94FR. Since this does not come with a connector you can use the RoadMaster 6-Wire Trailer Connector - Vehicle End # RM-910030-7. Be sure to consult your vehicle owners manual for specific information on flat towing the vehicle. I have attached some installation videos for your reference.
    view full answer...
  • Recommended Parts to Flat Tow a 2021 Chevy Tahoe Premiere
    I would be happy to! To flat tow your 2021 Chevy Tahoe Premiere you will need the following parts: Tow Bar and Safety Chains - Roadmaster Sterling Tow Bar item # RM-576 Base Plate Kit - Roadmaster Direct-Connect Base Plate Kit - Removable Arms item # RM59VR Battery Disconnect - Roadmaster Battery Disconnect with Switch item # RM-766 Wiring Harness - Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit for LED's item # RO44FR or Item # RO94FR for Incandescent Lights Supplemental...
    view full answer...
  • Can You Use The Blue Ox Tow Bar Wiring Kit On A 2021 Jeep Wrangler Ulimited
    For your 2021 Jeep Wrangler Unlimited, you can use either the Hopkins Custom Tail Light Wiring Kit for Towed Vehicles # HM39VR you mentioned, rather than the Roadmaster Wiring Kit with Smart Diodes # RM47ZR. If you choose not to use # RM47ZR and you use # BLU79FR you will not need any additional wiring as this is a plugs into your vehicle's harness. If you choose to use # RM47ZR, then you may need the Roadmaster Brake-Lite Relay Kit # RM-88400 if you use this kit with a supplemental braking...
    view full answer...
  • Parts Needed to Flat Tow 2020 Chevy Sonic
    Your 2020 Chevy Sonic is indeed equipped with an eye bolt that can be screwed into an integrated socket at the front of the vehicle, however this should only be used to help pull the car up onto a flat bed or trailer when it's disabled. This is not designed for actually towing the vehicle and should not be used as such. If you take a look at your copy of the Sonic's owner's manual you can find a more detailed section on this starting on page 264. In order to flat tow your vehicle you...
    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...
  • Do Miles Rack Up While Flat Towing a 2019 Chevrolet Spark
    The 2019 Chevrolet Spark should not rack up miles while being towed but you can confirm with the manufacturer. In order to tow the car assuming it has a manual transmission you will need a number of components such as base plates, a tow bar, safety cables, supplemental braking system, and flat-tow wiring harness. I have attached a list of recommendations for you as well. Roadmaster Direct-Connect Base Plate Kit part # RM-523197-5 (LT Models) Roadmaster Direct-Connect Base Plate Kit part...
    view full answer...
  • Does Roadmaster Smart Diode Kit Fit 2023 Chevy Equinox RS
    I checked directly with Roadmaster just now and for the 2023 Chevy Equinox RS you do need to use the smart diode kit part # RO94FR on your RS model.
    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...
  • Tow Bar Wiring For 2022 Chevy Spark For Use With Brake Buddy Stealth Braking System
    The part you mentioned is a wiring kit for a trailer connector, and won't give you the necessary compatible connections at the front of your 2022 Chevy Spark to work with the Brake Buddy Stealth Supplemental Braking System # HM39530. In fact, since your '22 Spark uses variable voltage tail lights (where all of the signals are sent down a single wire), you'll need a specific tow bar wiring kit, the Roadmaster Universal Wiring Kit with Smart Diodes for Variable Voltage Incandescent Tail...
    view full answer...


< Previous



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 Jacob T
Video Edited:
Jacob T
Employee Dustin K
Video Edited:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Zach D
Video by:
Zach D
Employee Jonathan Y
Video by:
Jonathan Y
Employee Thomas T
Video by:
Thomas T
Employee Ethan H
Video by:
Ethan H
Employee Rick G
Video by:
Rick G
Employee Shane H
Test Fit:
Shane H
Employee Robert C
Test Fit:
Robert C
Employee Conner L
Test Fit:
Conner L
Employee David F
Test Fit:
David F
Employee Ryan G
Test Fit:
Ryan G
Employee Clayton O
Test Fit:
Clayton O
Employee Bradley B
Test Fit:
Bradley B
Employee John A
Test Fit:
John A
Employee Mike S
Written by:
Mike S
Employee Michael B
Installed by:
Michael B

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