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  1. Flat Tow Wiring Harness
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  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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$155.20
Retail:$206.35
You Save: $51.15
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
  • Tail Light Mount
  • Roadmaster

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:


Customer Reviews

Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Coiled Adapter Cord - RM-15267

Average Customer Rating:  4.8 out of 5 stars   (2754 Customer Reviews)

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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  • 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 Flat Towing Components For A 2023 Ford Escape Hybrid
    Hi Randy, Starting with the necessary parts I have the following recommendations: Baseplate: If you have a non plug-in hybrid then you'll need the # BLU92CR; if you have a plug-in hybrid then you'll need part # BLU82CR instead. Tow Bar: etrailer SD Non-Binding Tow Bar for Blue Ox Base Plates # e47ZR. This tow bar comes with safety cables included and has a built-in drop/rise to help keep it level between the motorhome and Escape. Tow Bar Wiring Kit: Roadmaster Diode 7-Wire to 6-Wire...
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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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  • Will Redarc Brake Controller Work With Motorhome Towing Chevy Colorado
    Hi Eric; the Redarc you have is a traditional brake controller that is designed for trailer brakes. It will only work with a trailer that has electric or electric over hydraulic brakes. It would be great if this could work for flat towing too but unfortunately, you will need a different kind of braking system to flat tow your 2016 Chevy Colorado. I'm assuming this is still the 2016 you asked about from the other day and not a 2022 like you added in our fitguide. If your RV has hydraulic...
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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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  • Parts Needed To Flat Tow A 2021 Jeep Gladiator With A Roadmaster Sterling All Terrain Tow Bar
    Hi Carrie, Since you have a Roadmaster Sterling All-Terrain Tow Bar # RM-576 you'll want to go with a Roadmaster baseplate to avoid having to purchase an additional adapter to connect to it. If you have a factory steel or plastic bumper then you can go with the Roadmaster Direct-Connect Base Plate Kit # RM-521453-5. For the Brake Buddy Vantage Select you need the remote # HM39505, power cord for the main unit, and breakaway kit # HM39327. For the lighting you can go with the Roadmaster...
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  • Does the Roadmaster Nighthawk Tow Bar Come With Safety Cables
    Hey Richard and Janet, yes the Roadmaster Nighthawk # RM-676 does come with safety cables! I see you're checking out some flat tow parts for your CR-V, are you interested in a complete set up? If you are, on top of the tow bar # RM-676 you're also going to need: - A base plate kit # RM-521567-5, a braking system # RM-8700 with the relay # RM-88400, and a wiring harness # RM-15267. You are also going to need either the # RM76511 if your owner's manual says to pull the #19 ACC radio fuse,...
    view full answer...
  • 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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  • Does The Rampage Rock Rage Bumper Have Add-On D-Rings And What Is Needed To Flat Tow A 1999 Jeep TJ
    The Rampage Rock Rage Front Bumper for Jeep # RA97801 doesn't have a D-ring add-on option so you'd have to have a qualified fabricator weld D-rings in to the bumper if you wanted them. You'd also need to have that fabricator ensure that the bumper is properly secured enough to the frame to be able to tow from the D-rings. If you end up being able to tow from the D-rings then you'll want either the Roadmaster # RM-035 (3/4" thick D-rings) or RM-035-1 (1" thick D-rings) and a Roadmaster...
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  • Parts Needed to Flat Tow 2000 Ford Ranger
    Hey Andre, what brand of tow bar do you have? What braking system do you have? Reason I ask is I would want to match the base plate kit to the brand of tow bar you have and also I would need to match the breakaway kit to the braking kit that you have.
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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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  • Recommended Flat Towing Parts for a 2009 Smart Fortwo
    I would be happy to make some suggestions for you! To flat tow your 2009 Smart Fortwo you will need the following parts: Tow Bar and Safety Chains - etrailer SD Non-Binding Tow Bar item # e44ZR Base Plate Kit - Roadmaster EZ Base Plate Kit item # 52285-1 Wiring Harness - Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit item # RM-15267 Battery Disconnect Switch - Roadmaster Automatic Battery Disconnect item # RM-766 Blue Ox Patriot Portable Flat Tow Brake System item # BLU37TR High...
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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 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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  • Recommended Diode Kit for a 2021 Jeep Grand Cherokee Limited
    Hey Andy! The premium lighting group that Jeep offers for the 2021 Grand Cherokee Limited won't affect which diode wiring kit you need. The option that will determine the correct one is whether or not your Jeep has the Parksense Proximity Sensors. I have listed the parts below: Without Proximity Sensors - Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit item # RM-15267 or item # RM-152 for just the diodes With Proximity Sensors - Roadmaster Smart Diode 7-Wire to 6-Wire Wiring Kit...
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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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  • Parts Needed to Flat Tow 2023 Ford Bronco with Heavy Duty Bumper
    We have the Blue Ox base plate kit part # BLU23XR that fits your 2023 Ford Bronco that has the factory heavy duty bumper and winch. I really like the Blue Ox base plates Glen as I think they are the easiest to use and they very high quality. 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. One of the most popular compatible tow bars is the Blue Ox Avail # BX7420 which comes with safety...
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  • Recommended Flat Tow Wiring for a 2024 Jeep Gladiator with LED Tail Lights
    Thanks for reaching out, Todd! The flat tow wiring kit I recommend for the LED tail lights on your 2024 Jeep Gladiator is the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit, and the correct part depends on if your Gladiator has the ParkSense feature or not: - With ParkSense # RM63MR - Without ParkSense # RM-15267 I think since you have the LEDs that you're supposed to have the ParkSense, but it's best to double check since the ParkSense kit has different diodes to help the...
    view full answer...
  • Recommended Flat Towing Set Up for a 2023 Ford Bronco Pulled by a Motorhome w/ Air Brakes
    Congrats on the new motorhome! I was looking at the features that came with your 2024 Dynamax Dynaquest XL. It does not look like it came prepped for a flat towing set up so you're going to need the Demco Air Force One Flat Tow Brake System for RVs w/ Air Brakes item # SM99243. Now if you do end up having the BrakeSync set up you'll want the item # DM23MV you were looking at but I did not see it as an option. For a Blue Ox tow bar, I recommend the Blue Ox Alpha 2 Non-Binding Tow Bar item...
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  • Recommended complete Flat Towing Setup for a 2024 Ford Maverick Hybrid
    Bruce, I'd recommend going with the Roadmaster Direct Connect Base Plate Kit # RM97RR. This base plate is custom fit to your Maverick, is made in the USA, and includes all the hardware and instructions for install. If you're interested in a complete flat towing setup you're also going to need a set of tow bars # RM-676, a braking system # RM-9060-900002, a charge line kit # RM-88400, a wiring harness # RM-15267, and a charge line kit # RM-156-25.
    view full answer...
  • Flat Tow Setup For Towing A 2024 GMC 1500 With A 2024 Dynamax DynaQuest XL Air Brake Motorhome
    Hey Kevin, congrats on the new truck and motorhome. Here is what I recommend for flat towing your 2024 GMC Sierra 1500 crew cab with your 2024 Dynamax DynaQuest XL motorhome with air brakes: - Roadmaster Direct-Connect Base Plate Kit # RM-523198-5 - Roadmaster Nighthawk All-Terrain Tow Bar # RM-676 - Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit # RM-15267 - Roadmaster Battery Disconnect with Switch for Towed Vehicle # RM-766 - Demco Air Force One Flat Tow Brake System for...
    view full answer...
  • Parts Needed to Flat Tow 2024 Ram 1500 Behind Motorhome With Roadmaster Tow Bar
    Hi Robert; hopefully your Roadmaster tow bar is one that attaches to direct-connect base plates as opposed to crossbar base plates; for example the 8,000 lb Roadmaster Sterling would be optimal. Assuming that, here is what you need to flat tow your 2024 Ram 1500 with a tow bar like the Sterling # RM-576: - Base Plate Kit: Roadmaster Direct-Connect Base Plate Kit # RM-522203-5 - Wiring Kit: Roadmaster Wiring Kit # RM-15267 - Supplemental Braking System - MOTORHOME WITH HYDRAULIC BRAKES:...
    view full answer...


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