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Roadmaster Universal Hy-Power Diode Wiring Kit

Roadmaster Universal Hy-Power Diode Wiring Kit

Item # RM-152
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Our Price: $120.55
Tow Bar Wiring
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Roadmaster Splices into Vehicle Wiring - RM-152
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Diode kit allows you to use your vehicle's tail lights and wiring system while preventing feedback from your RV. Wires 2-wire and 3-wire systems to operate as a combined lighting systems. Connectors and Extension loop sold separately. Lowest Prices for the best tow bar wiring from Roadmaster. Roadmaster Universal Hy-Power Diode Wiring Kit part number RM-152 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Reviews (10)
  • Q & A (118)
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Roadmaster Tow Bar Wiring - RM-152

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

Diode kit allows you to use your vehicle's tail lights and wiring system while preventing feedback from your RV. Wires 2-wire and 3-wire systems to operate as a combined lighting systems. Connectors and Extension loop sold separately.


Features:

  • Lets you wire your vehicle to accept your RV's tail, brake, and turn signal lights for flat towing
  • Wires towed car as combined system so that brake and turn signals travel along same wire
  • Prevents electrical feedback and the damage it can cause to your vehicle's electrical components
  • Aluminum case protects diodes from the elements
    • Powder coated aluminum is corrosion resistant
  • Includes 4 Hy-Power diodes; 30' long, 4-wire harness; wire connectors; cable ties; 1 ring terminal; and 3' long plastic loom
    • Extension loop for connecting towed car to RV is sold separately
    • Brake light relay (RM-88400 - sold separately) may be required if used with supplemental braking system
  • Limited Lifetime Warranty


Specs:

  • Max amperage: 85 amps
  • Max voltage: 24 volts


Note: For applications that have separate lighting, this kit will cause your brake lights to function as both brake and turn signal lights. A wiring converter (118158 - sold separately) and 2 additional diodes will be needed if you want to retain separate turn and brake signals.


Separate vs. Combined Lighting Systems

Some automobiles operate on a 3-wire system, wherein the brake signal and the turn signals travel along different wires to illuminate different lights. (Typically, these vehicles have amber turn signals.) This is referred to as a "separate lighting system". When you hook up for flat towing using this kit, your towed car's lighting system will operate in a combined fashion regardless of whether it typically has combined or separate lighting. This means that the brake and turn signals sent by your RV to your towed car will be carried on a single wire. As a result, your car's brake lights will do the flashing for the turn signals. Your vehicle will still function as designed when not hooked up to your RV.


Diode Wiring Diagram

Diode Wiring Diagram

Diode Wiring Diagram

Diode Wiring Diagram

Do You Need a Brake Light Relay?

Because this kit wires your vehicle as a combined system, a brake light relay (RM-88400 - sold separately) may be required if you use a supplemental braking system with your towing setup. A supplemental braking system depresses the brake pedal in your towed car every time you apply the brakes in your RV. So, if your towed car's brake lights illuminate when the brake pedal is pressed and the engine is off - as is the case when towing - then you need to install a relay to ensure that the lights on your towed car always act in accordance with the signals sent by your RV via the wiring harness. Without a relay, the brake signal from your towed car will override the turn signal sent by your RV when you slow down to make turns, creating a potential hazard.



152 Road Master Economy Towed Car Wiring Kit with 4 High Power Diodes






Customer Reviews

Roadmaster Universal Hy-Power Diode Wiring Kit - RM-152

Average Customer Rating:  4.9 out of 5 stars   (10 Customer Reviews)

Diode kit allows you to use your vehicle's tail lights and wiring system while preventing feedback from your RV. Wires 2-wire and 3-wire systems to operate as a combined lighting systems. Connectors and Extension loop sold separately.

- RM-152
by:

Just finished installing the “kit”, everything went well, the video on the etrailer web site helped but was slightly different than my installation since it was a 2006 model and mine is a 2012. Should make towing and hooking/unhooking easier and safer than using the magnetic lights. I’m using the Pollack 6 pin connector with the wiring “kit”. 609988


Comments
Works Great, Totally Transparent During Towing or Normal Use
Steve C - 03/04/2020

70729

- RM-152
by:

I am never disappointed when dealing with etrailer, they always deliver the right quality parts at a fair price and always fast fast shipping! 715897



- RM-152
by:

Just ordered the 152 wiring kit, the brake relay kit and the seat adapter for the brake master tow brake. Arrived early and all was good. Will comment again after I install, but wanted to comment on the ease of purchase and delivery. Christina was great! 579770



- RM-152
by:

The installation videos make it SO easy! It took time for me since I'm a perfectionist but it turned out flawless. I saved over $1000 by installing it myself and etrailer made it possible!!! They covered everything I needed to do the job! Highly recommended etrailer every time! 800054



- RM-152
by:

Great fast service! 790466



- RM-152
by:

Everything came delivered in good condition. I plan to install it in my Jeep in the next couple of weeks 774003



- RM-152
by:

Quick delivery and just as described. Couldn’t ask for more. 738516



- RM-152
by:

Product was as flat 4 wire , needed more cable housing,connectors on diode could be better, however wire length was perfect. Video was great help 643838



- RM-152
by:

works very well 337630



- RM-152
by:

Wiring harness worked out better than a nticipated. 309163


Comments
Excellent
Richard - 10/20/2017

29642
11
11

Ask the Experts about this Roadmaster Tow Bar Wiring

  • Flat Towing Wiring Recommendation for a 2012 Mini Countryman
    For lighting for your 2012 Mini Countryman you can use the diode kit, # RM-152, and not have to worry about cutting into the taillight housing. You will also want the # BX88206 to connect this lighting solution to your tow vehicle. This comes with a round 6-way connector that you will install on the front of your towed vehicle and enough coiled wire to go from there to the RV. I attached a link to a page that has several help articles on tow bar lighting options as well.
    view full answer...
  • Tow Bar Lighting Recommendation for a 2010 Kia Soul
    For lighting confirmed to fit your 2010 Kia Soul you can use the diode kit, # RM-152, and not have to worry about scratching the paint of your vehicle or cutting into the taillight assemblies. You will also want the # BX88206 to connect this lighting solution to your tow vehicle. This comes with a round 6-way connector that you will install on the front of your towed vehicle and enough coiled wire to go from there to the RV. I attached a help article on tow bar lighting for you to...
    view full answer...
  • Flat Towing Wiring Kit Recommendation for a 2007 Subaru Outback Wagon
    For tow bar lighting for your 2007 Subaru Outback Wagon you can use the diode kit, # RM-152, and not have to worry about cutting into the taillight housing. You will also want the # BX88206 to connect this lighting solution to your tow vehicle. This comes with a round 6-way connector that you will install on the front of your towed vehicle and enough coiled wire to go from there to the RV. I attached a help article on tow bar lighting options for you to check out as well.
    view full answer...
  • Flat Tow Lighting Recommendation for a 2016 Toyota Corolla
    For tow bar wiring for your 2016 Toyota Corolla that will allow you to control the rear taillights of the vehicle with your tow vehicle you would want the diode kit, # RM-152. With this kit you would not have to worry about cutting into the taillight housing. You will also want the # BX88206 to connect this lighting solution to your tow vehicle. This comes with a round 6-way connector that you will install on the front of your towed vehicle and enough coiled wire to go from there...
    view full answer...
  • Tow Bar Wiring Recommendation for a 2007 Honda Civic
    This is a good question, but you would need tow bar wiring to activate the taillights of your 2007 Honda Civic. You can not use trailer wiring in reverse as this could damage the vehicle's taillight circuits. For lighting you can use the diode kit, # RM-152, and not have to worry about cutting into the taillight housing. You will also want the # BX88206 to connect this lighting solution to your tow vehicle. This comes with a round 6-way connector that you will install on the front...
    view full answer...
  • Tow Bar Lighting Recommendation for a 2004 Toyota Tacoma
    For lighting for your 2004 Toyota Tacoma you can use the diode kit, # RM-152, and not have to worry about cutting into the taillight housing. You will also want the # BX88206 to connect this lighting solution to your tow vehicle. This comes with a round 6-way connector that you will install on the front of your towed vehicle and enough coiled wire to go from there to the RV. The front turn signals will not be activated when using this setup.
    view full answer...
  • Flat Tow Lighting Recommendation for a 2002 Chevy Tracker
    Sounds like you are looking for tow bar lighting so that the taillights of your 2002 Chevy Tracker will operate the same as your GMC tow vehicle. For lighting you can use the diode kit, # RM-152, and not have to worry about cutting into the taillight housing. You will also want the # BX88206 to connect this lighting solution to your tow vehicle. This comes with a round 6-way connector that you will install on the front of your towed vehicle and enough coiled wire to go from there to...
    view full answer...
  • Wiring Recommendation for Flat Towing a 1982 Jeep CJ 7 Laredo
    Good news, I can help you with your wiring needs. First thing is to identify if your Jeep CJ-7 has separate or combined wiring. You will be able to tell this typically by if your taillight has an amber signal. I have linked a Help Article on wiring for your convenience. The 4-diode kit from Roadmaster # RM-152 will work for both combined and separate wiring, but if you have separate wiring you won't have function of the amber blinkers with this kit. If you prefer to still have...
    view full answer...
  • Best Parts to Flat Tow a Jeep Wrangler TJ with D-Ring Adapters
    Towing your Jeep Wrangler TJ behind your motorhome requires a tow bar, a kit to connect the tow bar to the Jeep, a lighting solution, and a braking system. You also may need a way to maintain the Jeep's battery while towing and a high-low adapter to keep the towing setup level. One of the best tow bars on the market is the Roadmaster Nighthawk All Terrain, part # RM-676. It's a non-binding tow bar that makes it easier to connect on unlevel ground. The arms are also self-aligning to...
    view full answer...
  • Flat Towing Wiring Kit for a 2018 Jeep JL Wrangler Unlimited
    The Tekonsha T-One # 118786 that you referenced is for activating the light functions on a trailer when towing with your 2018 Jeep JL Wrangler Unlimited. It sounds like you are needing some wiring to flat tow your Jeep and for that you need some different parts. If you use the Hy-Power Diode Wiring Kit # RM-152 along with the Hopkins Mounting Bracket # HM48605 and the Pollak Heavy-Duty, 4-Pole, Round Pin Socket # PK11410 then you will essentially have the Flexo-Coil Wiring Kit # RM-15267...
    view full answer...
  • Best Complete Flat Towing System for 2016-2018 Ford Focus
    In order to flat tow your 2016-2018 Ford Focus without adaptive cruise control I recommend starting with the Roadmaster EZ5 Base Plate Kit - Removable Arms # RM-524443-5. These base plates will give you a really clean look when installed and will work very well with the Roadmaster Nighthawk All Terrain, Non-Binding Tow Bar w/ LED Lights - RV Mount - 8K # RM-676. This tow bar is really nice with the integrated LED lights wiring connector and safety cables. To finish the wiring on...
    view full answer...
  • Recommended Flat Towing System for a 2010-2012 Dodge Ram 1500
    For a 2010-2012 Dodge Ram 1500 you will be able to flat tow your vehicle behind a motorhome. To do so you will need baseplates, a tow bar, tow bar wiring, a supplemental braking system and some other small components. Here are my recommendations: For base plates, I recommend the Roadmaster EZ kit # 52289-1. This is an easy install with some Loctite # LT37420 and will give you removable arms for a clean look when not in use. Then for your tow bar, I recommend using the Roadmaster...
    view full answer...
  • Parts Needed to Flat Tow 2014-2018 Jeep Grand Cherokee
    In order to flat tow your Jeep Grand Cherokee behind an RV you need a base plate kit, a tow bar, safety cables, a lighting solution, a supplemental braking system, and likely a high-low adapter. Starting with the base plates, I recommend the Roadmaster EZ5 Base Plate Kit # RM-521440-5. This kit is custom fit for your Grand Cherokee and features a hidden bracket design that provides a clean look when you aren't towing. Its black powder coat finish is durable and corrosion resistant. Then...
    view full answer...
  • Is Mopar 68321424AB Harness Needed on 2020 Jeep Cherokee for Flat Towing
    The Mopar 68321424AB harness that you referenced is not needed on your 2020 Jeep Cherokee to set it up for flat towing. As you mentioned, this particular harness was needed on earlier model Jeeps to eliminate the "wobble" that would occur when being towed but this has been resolved on your 2020 model so the harness is no longer required. You might already have everything you need to flat tow your Jeep (base plates, tow bar, safety cables, lighting solution, braking system) but just...
    view full answer...
  • Parts Needed to Flat Tow 2019 Jeep Cherokee Limited, Latitude or Latitude Plus
    For your 2019 Jeep Cherokee you'll need to first start with a base plate kit. For that you'd want the part # RM-521452-4. This fits the Latitude, Latitude Plus and Limited models. If you have an Overland, Trailhawk, or Trailhawk Elite you'd want the # RM-521451-5. Next you'll need a tow bar which for that the Roadmaster Sterling part # RM-576 is your best option for if you have the Latitude or Limited models since you'll need the included crossbar. If you have an Overland or Trailhawk...
    view full answer...
  • Parts Needed to Flat Tow 2020 Chevy Spark Behind Motorhome
    I can absolutely help set your 2020 Chevy Spark up so that it can be flat towed behind your motorhome, as long as it has a manual transmission. To do this you will need a base plate kit, a tow bar, safety cables, a lighting solution, a supplemental braking system, and possibly a high-low adapter. I will quickly list my specific recommendations below and then go into further detail on each further down. Base Plate Kit - Roadmaster Direct-Connect # RM-523202-5 (excludes ACTIV models) Tow...
    view full answer...
  • Parts Needed to Flat Tow a 2019 Jeep Wrangler Unlimited
    We have everything you need to be ready. Starting with the tow bar, I recommend the Roadmaster Sterling All Terrain, part # RM-576. I like it because of the non-binding feature to make it easier to disconnect. It also includes safety cables, a 6-way wiring connector to go on the front of the Jeep, and the cable to connect the two vehicles. It also pairs well with the EZ5 base plate kit, part # RM-521453-5. The only catch is the Sterling's safety cable hooks will need to be connected...
    view full answer...
  • Best Flat Towing Setup for 2019 Ford Fiesta
    Absolutely! In order to flat tow your 2019 Ford Fiesta you will need a base plate kit, a tow bar, safety cables, a lighting solution, a braking system, and likely a high-low adapter. I will list my specific recommendations below and go into a bit more detail on each further down. Base Plate Kit - Roadmaster Direct-Connect # RM-524438-5 Tow Bar - Roadmaster Nighthawk All Terrain # RM-676 (includes safety cables) Lighting Solution - Roadmaster Hy-Power Diode Kit # RM-152 Braking System...
    view full answer...
  • Demco Tabless Base Plate Compatability with Roadmaster Nighthawk Tow Bar for 2019 Jeep Wrangler
    The Roadmaster Nighthawk All Terrain, Non-Binding Tow Bar w/ LED Lights - RV Mount - 8K # RM-676 is compatible with the Demco Tabless Base Plate Kit - Removable Arms # DM9519336. There is no additional adapter needed. I confirmed this with my tech contact at Demco.
    view full answer...
  • Parts to Flat Tow 2012 Smart fortwo Behind Motorhome
    We can help you get set up for safely towing your 2012 Smart fortwo behind your motorhome. A number of items are needed and you can read up on all by referring to the flat towing overview article I linked for you. I also included additional helpful articles on several of these specific components which include a tow bar, safety cables, base plates, a wiring kit, a supplemental braking system and also a high/low hitch adapter. Starting with base plates for the fortwo, I suggest the...
    view full answer...
  • Parts Needed to Flat Tow a 2013 Honda CR-V AWD Behind a Motorhome
    The local shop is wrong. According to the owner's manual for a 2013 Honda CR-V you can flat tow the vehicle behind a motorhome with all 4 wheels on the ground. Not only that but the manual also states that AWD models have to be towed with all wheels on the ground. I'd find a better shop! Be sure to check page 235 and 236 of your manual for procedure information. You will need 5 major components to flat tow your CR-V: base plates, a tow bar, safety cables, lighting, and supplemental braking. For...
    view full answer...
  • Parts Needed to Flat Tow a 2015-2019 Chevy Silverado or GMC Sierra 3500
    The parts to flat tow a 3rd generation 3500 GM pickup will actually be almost identical whether it is a Chevy Silverado or a GMC Sierra since they are essentially the same vehicle. To flat tow any vehicle you will need a base plate kit, tow bar, safety cables, vehicle tow bar wiring, a supplemental braking system, and possibly a high-low adapter. The base plate kit that I recommend for your application is the Roadmaster MS Base Plate Kit # RM-3180-2 as this fixed arm system adds a rugged...
    view full answer...
  • Can I Purchase Roadmaster Diode Kit Without The Coiled Adapter
    Yes, if you do not need the 7-way to 6-way coiled adapter cord you can purchase Diode Kit and wiring part # RM-152 and vehicle side 6-way plug part # RM-910030-7. This 6-way plug is the same plug that comes with the kit # RM-15267. The Diode kit part # RM-152 comes with 4 diodes and 30 feet of 4-wire. It also comes with the connectors, zip ties, 1 ring terminal and plastic loom to wire the vehicle for lights while flat towing. I have attached an installation video of the diode kit in...
    view full answer...
  • Can a 2019 Kia Soul Be Flat-Towed
    According to my research, the 2019 Kia Soul can be flat-towed with all four wheels down if it has a manual transmission. However, I strongly recommend you confirm this with your local dealer as the owner's manual was not very clear on whether or not it is recommended. In order to flat-tow the vehicle with all four wheels on the ground behind a motorhome you are going to need a tow bar, base plate kit, safety cables, tail light wiring harness, supplemental braking system, and possibly...
    view full answer...
  • Recommended Parts Needed to Flat (Dinghy/Recreational) Tow a 2015 Ram 1500
    The parts that you need to flat tow a 2015 Ram 1500 are a base plate kit, tow bar, safety cables, vehicle tow bar wiring, a supplemental braking system, and possibly a high-low adapter. The actual part numbers though will vary depending on what model of 1500 you end up getting. If you have a Standard model use the base plate kit # RM-52289-5 but if you have a Sport or Express use the kit # RM-298-3 instead. Both of these are compatible with the Roadmaster Nighthawk All Terrain # RM-676....
    view full answer...
  • Parts Needed to Flat Tow 2018 Chevy Sonic RS Hatchback
    The final authority on whether a vehicle can be flat towed is the manufacturer. It sounds like your 2018 Chevy Sonic Hatchback is flat towable if it has a manual transmission but they are still sorting out the details. We have all the parts needed to flat tow it. For a base plate kit you'd want the part # RM-523194-5 which is a confirmed fit and will work well. The Nighthawk Tow Bar part # RM-676 that you referenced would be a very good choice too that will work with the base plate kit...
    view full answer...
  • Parts Needed to Flat Tow a 2018 Jeep Grand Cherokee
    The Sterling, part # RM-576, is a good tow bar so you definitely want to keep it. There aren't any Roadmaster base plate kits that fit the 2018 Jeep Grand Cherokee at this time so I recommend using the Blue Ox kit, part # BX1128, with the adapers # BX88151. The base plates are virtually hidden with the arms taken off. Take a look at the picture I attached. The Sterling originally included wiring to connect the motorhome to the Jeep as well as a 6-way connector to install on the front...
    view full answer...
  • Flat Towing Parts Needed for 2018 Honda Fit With Manual Transmission
    I'd be happy to confirm the parts you mentioned for your 2018 Honda Fit in order to flat tow it: - Roadmaster Direct-Connect Base Plate Kit # RM-521571-5 - Roadmaster Nighthawk All Terrain, Non-Binding Tow Bar # RM-676 - Roadmaster Universal Hy-Power Diode Wiring Kit # RM-152 - Roadmaster Battery Charge Line Kit for Towed Vehicles # RM-156-25 This can be used if you do not want to pull fuses and use the Roadmaster FuseMaster Fuse Bypass Switch # RM76512 and # RM76511. If your...
    view full answer...
  • Parts Needed to Flat Tow 2018 Ram 1500
    The parts needed to flat tow your 2018 Ram 1500 will depend on what model you have; we will start with the Big Horn, Laramie/Laramie Longhorn, Limited, or Tradesman 4WD. For these models I recommend the Roadmaster EZ5 Base Plate Kit # RM-52289-5. For a tow bar I recommend going with the Roadmaster Nighthawk # RM-676 because of how easy the tow bar is to connect to the base plates as well as its long arms, which make it easier to maneuver when towing, as well as its integrated safety...
    view full answer...
  • Parts Needed to Flat Tow 2015-2018 GMC Sierra 2500 4WD Behind RV
    In order to flat tow your GMC Sierra 2500 with 4WD behind an RV, you will need a base plate kit, a tow bar, safety cables, a lighting solution, a supplemental braking system, and most likely a high-low adapter. Starting with the base plates, I recommend the Roadmaster MS Base Plate Kit # RM-3180-2. These heavy-duty brackets are confirmed to fit the 2015-2018 Sierra and their all-steel construction provides exceptional strength for pulling the vehicle. All the needed mounting hardware...
    view full answer...




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