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  1. Flat Tow Wiring Harness
  2. Roadmaster
  3. Diode Kit
  4. Splices into Vehicle Wiring
  5. Universal
  6. Tail Light Mount
Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Coiled Adapter Cord
Roadmaster

Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Coiled Adapter Cord

Part Number: RM-15267
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$146.93
Retail:$206.35
You Save: $59.42
Flat Tow Wiring Harness

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This complete kit includes everything you need to connect your RV's tail, brake, and turn signal lights to your towed car. Diodes prevent damage from electrical feedback. Includes 7-way to 6-way coiled adapter cord and 6-way socket. 1-800-940-8924 to order Roadmaster flat tow wiring harness part number RM-15267 or order online at etrailer.com. Free expert support on all Roadmaster products. Great prices and Fastest Shipping for Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Coiled Adapter Cord. Flat Tow Wiring Harness reviews from real customers.
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Roadmaster Flat Tow Wiring Harness - RM-15267

  • Diode Kit
  • Splices into Vehicle Wiring
  • Universal
  • Roadmaster
  • Tail Light Mount

This complete kit includes everything you need to connect your RV's tail, brake, and turn signal lights to your towed car. Diodes prevent damage from electrical feedback. Includes 7-way to 6-way coiled adapter cord and 6-way socket.


Features:

  • Complete wiring kit connects your RV's tail, brake, and turn signal lights to your towed car
  • Diodes prevent feedback that can damage your vehicle's electrical components
    • Protected from corrosion by powder-coated aluminum casings
  • 7-Wire to 6-wire adapter cord runs power from RV to towed car
    • Coiled to prevent dragging and tangling
    • Resistant to wear and tear with durable vinyl casing
  • 6-Way socket hardwires to towed car and mounts with included bracket
  • Kit includes:
    • 4 Hy-Power diodes
    • 4-Wire harness
    • 7-Way to 6-way coiled adapter cord
    • 6-Way socket with mounting bracket
    • 1 Butt connector, 1 ring terminal, split loom, and zip ties
  • Made in the USA


Specs:

  • Diode max amperage: 85 amps
  • Diode max voltage: 24 volts
  • Coiled cord
    • Max length: 8'
    • Compressed length: 15"
  • Wiring harness length: 27'


Notes:

  • A brake light relay (RM-88400 - sold separately) may be required if used with a flat tow brake system. (See below.)
  • A wiring converter (118158 - sold separately) and 2 additional diodes will be needed to retain separate turn and brake signals. (See below.)

review for diode kit

"Don't be intimidated by diodes: if you can strip and crimp wire, this installation will be no problem."


Combined Lighting System vs Separate Lighting System

Combined vs Seperate Lighting System

A combined lighting system, or 2-wire system, uses the same light bulb to signal both braking and turning. (In other words, the car signals a turn by flashing the brake light.)


A separate lighting system, or 3-wire system, has the brake signal and the turn signal light up independently of each other. Typically, the turn signal is amber.


To keep the separate lighting system on your car functioning properly while you're flat towing, add a wiring converter (118158 - sold separately) and 2 additional diodes.


Do I Need a Brake Light Relay?

If the engine is off and your car's brake lights illuminate when you press the brake pedal, you need to install a brake light relay (RM-88400 - sold separately) with this kit. Without a relay, your car's brake signal will override the turn signal sent by the RV when you are slowing down to make a turn, creating a potentially dangerous situation. Other drivers will see that you're slowing down, but not that you're making a turn. With a brake light relay, you can signal both and travel safely.



Wiring Diagrams for Roadmaster Diode Kit

Diode Wiring Diagram

Diode Wiring Diagram

Diode Wiring Diagram

Diode Wiring Diagram


15267 Road Master Towed Car 4 Diodes RV Plug to 6-Wire Socket Flexo Coil Wiring Kit

Installation Details RM-15267 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:

Ratings & Reviews

4.8

2842 reviews
5 Stars
(2457)
4 Stars
(265)
3 Stars
(57)
2 Stars
(22)
1 Star
(41)
This complete kit includes everything you need to connect your RV's tail, brake, and turn signal lights to your towed car. Diodes prevent damage from electrical feedback. Includes 7-way to 6-way coiled adapter cord and 6-way socket.

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See what our Experts say about this Roadmaster Flat Tow Wiring Harness

  • All Parts Needed to Flat Tow 2014 Chevy Silverado 1500 Behind Motorhome
    Hey there Jeff, thanks for the question and I can definitely get you all the parts needed to flat tow your 2014 Chevy Silverado 1500 behind your motorhome. I'll go ahead and list everything out for you to make it easy to order. - Base Plate Kit: etrailer Classic Base Plate Kit # e98959 - Tow Bar: etrailer XHD Non-Binding Tow Bar # e94ZR - Wiring Kit: Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit # RM-15267 - Roadmaster Battery Disconnect # RM-766 - Supplemental Braking System:...
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  • Demco vs. etrailer Base Plate For 2024 Ford Maverick
    You have a good eye Richard, as there is not a difference between the etrailer and Demco base plates that fit your 2024 Ford Maverick: - etrailer Invisible Base Plate Kit e64FV (discontinued) - Demco Tabless Base Plate Kit # DM77YV Both will fit your '24 Maverick and work exactly the same way so there honestly is not a difference. You will also need other components to flat tow your Maverick which I'll go ahead and list out for you, and keep in mind the tow bar will work with either...
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  • Blue Ox or Roadmaster Parts to Flat Tow 2023 Ford Maverick
    I prefer the Blue Ox flat towing setups over the Roadmaster kits as I have found them to be just a little easier to use and they are very well made. I wouldn't worry to much about the bumper cuts and it doesn't affect the shudder system like you mentioned either. So for your 2023 Ford Maverick I would go with the base plate kit part # BLU86HR. In addition to the base plates, you will also need a compatible tow bar, safety cables, lighting, and supplemental braking to flat tow your vehicle....
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  • Parts Needed to Flat Tow 2024 Ford Maverick Hybrid
    Hi Scott; to flat tow your 2024 Ford Maverick you will need a base plate, tow bar, safety cables, wiring, and a supplemental braking system. In addition to the Demco Tabless Base Plate Kit # DM77YV and Stay-IN-Play Duo # SM99251 or # DM86VR (with wireless monitor) you already selected you will need the following: -Demco Commander II Non-Binding Tow Bar # DM9511012 (comes with safety cables) -Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit # RM-15267 -Roadmaster Battery Charge...
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  • Recommended Complete Flat Towing Setup for a 2024 Jeep Wrangler
    Hey Christian, welcome to the world of RV-ing! So in addition to the Roadmaster Nighthawk # RM-676 you're also goin to need: - A baseplate kit, like the Roadmaster Direct-Connect Base Plate Kit # RM-521453-5. These attach to the Jeep itself so you can hook up the tow bars. - A braking system, like the Demco Stay-IN-Play Duo Flat Tow Brake System for RVs w/ Hydraulic Brakes # SM99251 with the stop light switch # RM-751490. This braking system is a bit more involved set-up wise, but once...
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  • Can I Flat Tow a 2023 Ford Bronco Using the Recovery Hooks?
    No, you can't. Those hooks are only for recovery or pulling something they're not rated to be flat towed with. You are actually going to have to remove them to install a base plate kit on your 2023 Ford Bronco. Since you have a Blue Ox Alpha tow bar you'll want the Blue Ox Base Plate Kit item # BLU23XR. This base plate kit is confirmed to fit the Bronco's with the Ford modular front bumper. Here are some other parts you will need to flat tow your 2023 Ford Bronco: Wiring Harness -...
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  • Recommended Flat Towing Parts for a 2023 Ford Maverick Hybrid
    I checked with Roadmaster to confirm but yes, you can use the Roadmaster Battery Charge Line Kit for Towed Vehicles item # RM-156-25 on your Hybrid 2023 Ford Maverick. Some other parts you will need to flat tow your Maverick are listed below. Please feel free to email me directly with any additional questions. Tow Bar and Safety Chains - Roadmaster Falcon 2 Tow Bar item # RM-520 and item # RM-643 Base Plate Kit - Roadmaster Direct-Connect Base Plate Kit - Removable Arms item # RM97RR Wiring...
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  • Complete Flat Towing Setup for a 2024 Ford F-150 Raptor
    Daren, for your 2024 Ford F-150 Raptor you are going to need: - A base plate kit, like the etrailer Invisible Base Plate Kit # e86YR, - A set of tow bars, like the etrailer XHD Non-Binding Tow Bar # e94ZR, - A braking system, like the Roadmaster BrakeMaster w/ Pressure Reducer for RVs w Air or Air-Over-Hydraulic Brake # RM-9160-900002, using the RoadMaster Stop Light Switch Kit # RM89ZR and the Roadmaster BrakeMaster Custom Fit Seat Adapter # RM-88316, & - A wiring harness, like the...
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  • Recommended Baseplate For A 2023 Jeep Grand Cherokee 4xe With Roadmaster Falcon 5250 Tow Bar
    Hey Michael, The Falcon 5250 has direct-connect attachment points that hook onto a crossbar, if you remove the crossbar adapter then you'll be able to go with a direct-connect baseplate like the # RM77ZR (models with tow hooks) or # RM76RR (models without tow hooks). If you haven't picked out the rest of your setup then I have the following recommendations: Tow Bar Wiring Kit: Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit # RM-15267. This diode kit will splice into your factory...
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  • Recommended complete Flat Towing Setup for a 2024 Ford Maverick Hybrid
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    Sure thing! To complete your flat tow setup for your 2018 Ford Expedition, you will also need: 1. A base plate kit, like the Roadmaster Direct-Connect Base Plate Kit # RM-524457-5. You'll need a base plate kit to connect your tow bars to your toad vehicle. 2.The next thing you're going to need is a braking system, like the Roadmaster BrakeMaster System w BrakeAway for RVs w Air or Air Over Hydraulic Brakes # RM-9160, with the RoadMaster BrakeMaster Custom Seat Adapter # RM-88318. A...
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  • Recommended Baseplate For A 2022 Bronco Raptor With Modular Bumper
    If your 2022 Ford Bronco Raptor has the Ford Performance Heavy Duty Modular Bumper then yes, you will be able to use the Roadmaster Direct-Connect Base Plate Kit # RM92ZR you referenced. If you haven't gotten all of the other components to flat tow your Bronco then I have the following recommendations: Tow Bar: The listed curb weight of the Bronco Raptor is 5,733lbs so I recommend the etrailer XHD Non-Binding Tow Bar for Roadmaster Direct-Connect Base Plate - 10.5K # e84ZR so that you'll...
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  • Parts Needed to Flat Tow 2019 Ford F-250 and 2023 Ford Expedition
    The etrailer tow bar part # e67ZR that you referenced can be used to tow both of your vehicles with Blue Ox base plate kits. For the 2023 Ford Expedition the part # BLU76CR is correct and for the 2019 Ford F-250 part # BX2675. Now for a braking kit that can easily transfer between the two vehicle you would want the Blue Ox Patriot part # BLU37TR. For lighting you can use the diode kit, # RM-15267, and not have to worry about cutting into the taillight housing. This will splice into your...
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  • Flat Towing Components Needed For A 2024 Jeep Gladiator
    Hey Mark, I can definitely get you the rest of your flat towing components for the Gladiator. It looks like you have the Roadmaster Falcon All-Terrain Tow Bar # RM-522 so you'll want the Roadmaster Direct-Connect Base Plate Kit # RM-521453-5. This fits select models with a factory bumper, if you have an aftermarket bumper then let me know and I can look for a fit. For the lighting you'll need the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit # RM-15267 unless you have ParkSense...
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    Hey James, the base plate kit you'd want for your 2018 Jeep Cherokee Trailhawk is the Blue Ox part # BLU76HR which works perfectly with your current Blue Ox base plate kit and has the removable arms you are wanting as well. For a braking system the Demco Stay N Play part # SM99251 is a really great option and one that I would recommend highly. It's easier to install than most similar systems and also works really well. Our installers rate this as their favorite. For lighting you can...
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    We have all of the parts you need to flat tow your 2020 Jeep Wrangler, and while it may seem like a lot of parts, it's actually just four basic components - base plates on the Jeep, a tow bar to connect the Jeep to your motorhome, wiring to power your Jeep's lights while it is being towed, and a braking system. Here is a list of what you'll need: - Base Plate Kit: Roadmaster Direct-Connect Base Plate Kit # RM-521453-5 - Tow Bar: Roadmaster Nighthawk All Terrain, Non-Binding Tow Bar w/...
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  • Recommended Flat Towing Components For A 2022 Jeep Gladiator
    Hi Randy, For your 2022 Jeep Gladiator I have the following flat towing component recommendations: Baseplate: If you have a standard model with a factory bumper or a Rubicon with a factory bumper then you can use the Roadmaster Direct-Connect Base Plate Kit # RM-521453-5. If you have a non-base model (Mojave) or non-factory bumper then let me know and we can figure out what will fit. Tow Bar: etrailer XHD Non-Binding Tow Bar # e84ZR. This tow bar comes with safety cables already included...
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  • Best Parts for Flat Towing 2019 Jeep Cherokee Trailhawk
    I'm happy to give you my recommendations for all the best parts for flat towing your 2019 Jeep Cherokee Trailhawk, including a way to protect it from rocks and debris to keep it looking sharp. The best parts to flat tow your '19 Cherokee Trailhawk are: - Base Plate Kit: Demco Tabless Base Plate Kit # DM9519340 - Tow Bar: Demco Dominator Non-Binding Tow Bar # DM9511008 - Vehicle Guard: Sentry Deflector for Demco Tow Bars # DM9523135 - Wiring Kit: Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil...
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  • Recommended Flat Tow Wiring for a 2024 Jeep Gladiator with LED Tail Lights
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  • Will Roadmaster Falcon Tow 2025 Jeep Grand Cherokee Overland
    Hi John; as long as you aren't exceeding that 6,000 lb capacity it won't be a problem so you can use the Falcon to tow your 2025 Jeep Grand Cherokee Overland. Since the Overland has tow hooks the correct Roadmaster Direct-Connect Base Plate Kit is the # RM77ZR. Since you want to use the Blue Ox Patriot # BLU37TR you will also need the 12 Volt Outlet Kit, 20 amps # RM-9332. If you need new wiring the Roadmaster Smart Diode Kit for Variable Voltage LED Tail Lights # RM63MR is the best option...
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Used Picture for Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Coiled Adapter Cord

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Notes: The tab at the end of the cover for the terminal broke off. This product is otherwise new and unused.

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