Roadmaster Extension Loop for Towed Vehicles - Dual 4-Way Flat Trailer Ends - 6' Long

Roadmaster Extension Loop for Towed Vehicles - Dual 4-Way Flat Trailer Ends - 6' Long

Item # RM-300150-00

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Accessories and Parts RM-300150-00 - 4 Flat to 4 Flat - Roadmaster
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  • Tow Bar Wiring
  • Extension
  • 4 Flat to 4 Flat
  • Roadmaster
  • Straight Cord
Extension wiring loop with 2 trailer ends lets you connect your RV and towed vehicle. Each male end easily plugs into a 4-way flat, vehicle-end plug. Call 800-298-8924 to order Roadmaster accessories and parts part number RM-300150-00 or order online at etrailer.com. Free expert support on all Roadmaster products. Guaranteed Lowest Price and Fastest Shipping for Roadmaster Extension Loop for Towed Vehicles - Dual 4-Way Flat Trailer Ends - 6' Long. Accessories and Parts reviews from real customers.


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  • Reviews (15)
  • Q & A (34)
  • Videos (1)
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Roadmaster Accessories and Parts - RM-300150-00

Extension wiring loop with 2 trailer ends lets you connect your RV and towed vehicle. Each male end easily plugs into a 4-way flat, vehicle-end plug.


Features:

  • Wiring loop lets you connect your RV to your towed vehicle
  • Dual trailer (male) ends plug into 4-way flat vehicle ends
  • 6' Long


300150-00 Road Master Extension Loop for Towed Vehicles - 2 4Way Flat Trailer Ends - 72" Long







Video of Roadmaster Extension Loop for Towed Vehicles - Dual 4-Way Flat Trailer Ends - 6' Long


Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Roadmaster Tow Bar Wiring RM-300150-00 Review

Today we're going to be taking a look at the Roadmaster Extension Loop for towed vehicles. This wiring loop lets you connect your RV to your towed vehicle. It's going to feature the dual trailer male-end plugs that would simply plug into a four-way flat vehicle end connector. This loop has a measurement length of 6 feet long, and each connector is going to come with a dust cap. That's going to do it for today's look at the Roadmaster Extension Loop for towed vehicles.


Customer Reviews

Roadmaster Extension Loop for Towed Vehicles - Dual 4-Way Flat Trailer Ends - 6' Long - RM-300150-00

Average Customer Rating:  5.0 out of 5 stars   (15 Customer Reviews)

Extension wiring loop with 2 trailer ends lets you connect your RV and towed vehicle. Each male end easily plugs into a 4-way flat, vehicle-end plug.

- RM-300150-00
by:

Needed make to make extension for trailer lights. Which is not easy to find. Thanks to etrailer.com, I got what I needed. Easy to order on site. Delivered in a timely manner. No complaints from here! 461078



- RM-300150-00
by:

Hard to find item and at a great price point! I use it to connect my 90 Suzuki to my 2009 Explorer when I tow it to the beach! 371438



- RM-300150-00
by:

I had installed the ROADMASTER tail light wiring kit on my towed Jeep which included this jumper cable to connect the car to my RV. Somehow it dragged on the ground while towing and wore through some insulation and one wire. I was very glad to see I could order just this jumper cable to make my install as good as new. ROADMASTER helped me identify the part number and etrailer stocked them at a good price. 394960


Comments

Its been a year, and everything is still working great. I am more careful how I support this jumper now.

Brad - 06/16/2018

39823

- RM-300150-00
by:

My review is based primarily on the service I received when calling etrailer.com. I cannot brag enough on how friendly, helpful, and efficient the representative was on the phone. I needed to purchase this product as a replacement for a component which came in a larger package/bundle I had previously purchased. I described the individual item I needed, and she directed me right to it and completed my order then and there, saving me the much larger sum of money which would have been required to purchase the entire package all over again. It was so easy. I'm very impressed with not only the inventory and products, but perhaps even more so the staff and service of this great company. I highly recommend them. 154230



- RM-300150-00
by:

Product was just as described and met my needs perfectly. Needed a replacement quickly for a planned trip and item came on time as promised. 649884



- RM-300150-00
by:

Product was delivered as the picture lo oks 641912



- RM-300150-00
by:

We ordered tow mounts, road master tow bar and some accessories from etrailer for a 2009 Suburban. All the items arrived within a few days and packed in secure boxes. After just a little drilling the mounts went right on, the instructions are very detailed and easy to follow. I highly recommend etrailer.com for your towing needs. 427244



- RM-300150-00
by:

Easy to install and needed for extending the wiring for the tow hitch. 371129



- RM-300150-00
by:

Perfect! Hard to find this cable in local stores and etrailer not only had it, but at a great price. 223325



- RM-300150-00
by:

Just what I needed and ordered Love this company and the quality of service and product I receive Would and have recommended this site to others Will be back shopping soon have another project in the works 206339



- RM-300150-00
by:

Fast Shipping. Product as described. 201088



- RM-300150-00
by:

Purchased this as a backup for the one I purchased earlier. The one that was replaced had gotten nicked when folding or tow bar. 147674



- RM-300150-00
by:

Checked with several RV shops, marine stores, and a place that sells trailers. The trailer placed rigged up a cable for $30. Spent more than a few hours scouring the web till I found etrailer.com and not sure of the nomenclature of what I needed, emailed their customer service with a description of the application and sent a picture of the connectors and within a couple days was sent the pic of this product. I was apprehensive at first until I viewed all the pictures then I was sold and immediately placed my order. Received the product 2 days ahead of the predicted arrival date and couldn't be happier. Highly recommend etrailer.com. I have actually bookmarked the site for later reference. 144240



- RM-300150-00
by:

Nice and small, bunches better than the coiled cable I had before. 128601



- RM-300150-00
by:

Products were delivered promptly and were exactly what I ordered. I would not hesitate using this site again. Great service. 77996


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Ask the Experts about this Roadmaster Accessories and Parts
Do you have a question about this Accessories and Part?


  • Availability of 8 Foot Long 4-Way Wiring Extension
  • We do have 4-Way flat to 4-Way flat extension adapters available, however they do not feature a coiled wire like you mentioned in your question. I recommend taking a look at the Hopkins 4-Pole Flat Wiring Extension # HM48235. This extension measures 120 inches (10 feet) long, which is a bit longer than you need but is the closest option available. We also have a 6 foot extension loop with part # RM-300150-00. I have attached a couple short video demonstrations on these products...
    view full answer...

  • Will Roadmaster Blackhawk 2 Tow Bar Work with Roadmaster Base Plates for a 2010 Honda CR-V
  • Yes, the Blackhawk 2 All Terrain tow bar will fit the XL base plates # RM-521559-4 for the 2010 Honda CR-V. Since you have already been flat towing, you probably already have safety cables but in case you do need cables use # RM-645. These are straight cables that you can use in the cable guides on the Blackhawk tow bar. You will also need lighting for the CR-V. If you are using a magnetic kit like # C-ATL20A or something similar then you can continue to use that with the CR-V. If you...
    view full answer...

  • Parts Needed to Flat Tow a 2009 Chevy HHR Behind a Motor Home
  • This has actually come up before and Roadmaster explained that they have not tested their base plates with the EAZ Lift tow bars so I cannot say if they will fit or not. You would need to contact EAZ Lift to determine if they have tested it with Roadmaster or Blue Ox base plates. What I recommend is using the Roadmaster base plates, # 3141-1, and using a tow bar that you know is compatible like the Falcon 2, # RM-520. You will also need safety cables like # RM-643. Next you will need...
    view full answer...

  • Estimated Installation Time for Blue Ox Base Plates on a 2013 Ford Edge
  • Blue Ox estimates the installation time of base plate kit # BX2628 at 3 hours for an experienced installer. They also add the following comment: The first installation of a particular baseplate, and installation by untrained individuals will likely increase installation time substantially. In addition to the base plates you will also need a compatible tow bar. For the Blue Ox base plates the most popular compatible tow bar is the Avail, # BX7420, which also comes with safety cables....
    view full answer...

  • Are Roadmaster Base Plates Compatible with a Reese Tow Bar for a 2012 Jeep Liberty
  • The Roadmaster base plates, # 521434-1, will work with a Reese tow bar as long as it is Reese model 74950 and you use adapter # RM-025 with quick disconnects # RM-201. If it is a different model tow bar then it will not work. based on my research I found that the compatible Reese tow bar is only rated for 5,000 pounds so it is not likely the base plates will be compatible. For a compatible tow bar you can use the Tracker # RM-020 and you will also need the quick disconnects # RM-201....
    view full answer...

  • Parts Needed to Flat Tow a 2012 Jeep Liberty Sport Latitude with Falcon 5250 Tow Bar
  • The Roadmaster Falcon 5250 is compatible with the quick disconnects and all Roadmaster base plate kits. There are a few options for your 2012 Jeep Liberty depending on how it is equipped. If it does not have a rockguard or skid plate then use # 521433-1. If it does have a rockguard or skid plate use # 521434-1. I have included links to the instructions for the first set and a video install of the second set. In addition to the base plates and tow bar you will also need safety chains...
    view full answer...

  • Need 4-Pole Flat Male to 4-Pole Flat Male Wiring Harness Adapter
  • We do have exactly what you need to join two female (vehicle-side) 4-pole flat trailer connectors. Roadmaster offers their # RM-300150-00 extension wiring loop which has male (trailer side) connectors on both ends of a 6-foot harness. This will allow you to join the two female 4-pole connectors on the truck and trailer.
    view full answer...

  • Trailer Connector With 4-Way Male Connector On Both Ends
  • We have a dual 4-way harness that has the trailer side adapter on each end that may work for you. It is part # RM-300150-00. This adapter is 6-ft long. We do not have a rigid adapter with a male connector on both ends.
    view full answer...

  • Parts Needed to Flat Tow a 2004 Jeep Grand Cherokee Behind a 2007 GMC Sierra 2500
  • In order to flat tow a vehicle, the very first thing you are going to want to do is consult the owners manual in the recreational towing section to determine the correct towing procedure. If you find that the vehicle can be flat towed then you will need 5 items. First you will need base plates on the vehicle being towed or the Toad. The base plates provide the proper safe and secure attachment point for the tow bar. You can use base plates # 1425-1. I have included a link to a video...
    view full answer...

  • Parts Needed to Flat Tow a 2007 Jeep Liberty Behind a Motor Home
  • On the base plate kit # BX1122 the tabs are 20 inches apart on center. The only tow bars that can be used are the Avail, # BX7420, Aventa, # BX7445, Alpha, # BX7365, and Allure, # BX7460P. The most popular of these is the Avail. It also comes with safety cables so you would not have to add any. You will also need a lighting solution to flat tow the vehicle. I recommend the bulb and socket kit # RM-155. It will bypass the vehicle wiring so you will not have to splice into it. Most...
    view full answer...

  • Recommended Tow Bar and Base Plates for Flat-Towing 1952 Dodge Panel Truck
  • We do not offer any custom-fit base plates for your 1952 Dodge panel truck but Blue Ox makes a set of heavy-duty bolt on base plates designed to mount to a flat section of bumper, part # BX88230. Since this will be a custom installation you will need to make sure the bumper has the necessary weight capacity for towing the truck. Most bumpers will require reinforcement. With these installed you can use any Blue OX tow bar, such as their car-mount Acclaim # BX4330 that you referenced....
    view full answer...

  • Parts Needed to Flat Tow a 2007 Chevy HHR Behind a Motor Home
  • I looked up an online version of the owners manual for a 2007 Chevy HHR and found that it can be flat towed. It gives the following steps: First set the parking brake. Then turn the ignition key to ACC to unlock the steering wheel. Next shift into neutral. Then release the parking brake. You also have to pull fuse 8 from the floor console fuse block to prevent draining the battery. The manual also states to not exceed 65 miles per hour. Any time you ever have a flat towing question, you...
    view full answer...

  • Trailer Connector Adapter for Towing a Trailer with a Female 4-Way Trailer Connector
  • I am not sure why your kayak trailer came with a female 4-way connector. In the trailer industry, the tow vehicle uses a female style trailer connector and the trailer uses a male style connector. This is the general rule. I have not heard of a vehicle coming with a male style trailer connector of any type. I have attached a photo showing what the vehicle side connector should look like and what the trailer side connector should look like. There are two solutions for this situation....
    view full answer...

  • Parts Needed to Flat Tow a 2009 Ford Escape Behind a Motor Home
  • Base plates are sold separately from the other components you will need to flat tow your 2009 Ford Escape. The first thing you will want to do is consult the vehicle owners manual to determine if the vehicle can be flat towed and if there are any special requirements or procedures to follow if it can be flat towed. The base plate kit # DM9518219 includes everything needed to install the base plates to the vehicle. The safety cables are not included, however they are included with the...
    view full answer...

  • Parts Needed to Flat Tow a 2012 Chevy Silverado 1500 Behind a Motor Home
  • Given that your 2012 Chevy Silverado 1500 could easily get over the 5,000 pound limit of the base plates you're refering to I recommend going with a different set. The Roadmaster MX base plates, # 3154-3, are generally considered more heavy duty and are recommended for trucks and SUVs. For a compatible tow bar, you will want a Roadmaster model that slides into the hitch on the RV. For a compatible tow bar that will match the capacity of your hitch and cover the vehicle weight, take a...
    view full answer...

  • 4-Way Flat Vehicle Side Connector that is the Same on Both Ends
  • We do have extension loops that are male on both ends. Take a look at # RM-300150-00. It is 6 feet long. This is currently the only option available for a 4-Way flat.
    view full answer...

  • Recommended 4-way Connector Needed for Tow Daddy Wiring Harness for Dinghy Towing
  • Sounds like you are looking for the just the Vehicle End 4-way flat trailer connector like the Hopkins # HM48190. This will mate with the wiring kit you have and connect to your male end 4-way plug # RM-300150-00 that you also purchased. If you need a 4-way with a wire lead then the Hidden Hitch # 118603 includes a 60 inch lead and a dust cover for the connector when not in use. I have linked all the above mentioned products to this page for your convenience.
    view full answer...

  • Flat Towing Base Plates and Tow Bar Set-Ups for 2016 Buick Enclave
  • Flat towing a vehicle behind an RV requires 5 basic components: 1) tow bar, 2) safety cables, 3) wiring kit and 4) base plates and 5) a braking system for the towed vehicle. The linked articles will give you good general background on each of these. I checked with my technical contact at Roadmaster and they do offer base plate kit # 523149-1 which fits Buick Enclave models (without brushguards) up through the 2016 model year. I suggest their Falcon 2 Tow Bar, part # RM-520, since it...
    view full answer...

  • Parts Needed to Flat Tow a 1993 Jeep Wrangler Behind a 2007 Chevy Suburban
  • For the 1993 Jeep Wrangler, we only have base plate options (that connect to the tow bar) if the Jeep has a U-channel bumper. You can use base plates # 1409-3. These base plates are compatible with your Roadmaster Falcon 2 tow bar, # RM-525. In addition to the base plates and tow bar, you will also need safety cables like # RM-643, a lighting solution, and a supplemental braking system. For lighting there are several options. If you will not be towing often then I recommend a magnetic...
    view full answer...

  • Parts Needed to Flat Tow a 2012 Jeep Wrangler Sport Behind Winnebago 35U Gas Coach
  • Flat towing requires 5 basic components: tow bar, safety cables, a wiring/lighting kit and base plates and a supplementary braking system for the towed vehicle. Since you have a Roadmaster tow bar I suggest staying with their base plates since this will avoid the hassle and expense of adapters which can be required to mate different brands' parts. You can use the link provided to see all Roadmaster base plates and the Select Vehicle Style drop-down menu at the top of the page will allow...
    view full answer...

  • Trailer Wiring Extension to Go From Motor Home to Flat Towed 2008 Mazda MX-5 Miata
  • What you need is the Roadmaster extension loop, # RM-300150-00. This is a 6 foot long cable with 4-Way ends. Both are male ends which is what you should need (the motor home and front of vehicle should have the same female connector). I have included a couple of helpful links to our FAQ articles on flat towing for you as well.
    view full answer...

  • Parts Needed to Flat Tow a 2007 Honda Fit Behind a Motor Home
  • To install Roadmaster base plates # 521558-1, trimming of spoiler, air dam, grille or plastic fascia may be required on some models of the 2007 Honda Fit. On the frame, at most there will be some drilling required. The 521557-1 kit that mentioned is designed to fit the Civic, not the Fit. In addition to the base plates you will also need a tow bar. The most popular tow bar option for the EZ style base plates is the Falcon 2, # RM-520. You will also need safety cables like # RM-643....
    view full answer...

  • How to Connect an RV with a 6-Way Trailer Connector to a Flat Towed Vehicle with a 4-Way Connector
  • To connect your RV to your flat towed vehicle you will need a 6-way to 4-way adapter on the RV, like part # 47305B. Then to connect from the adapter to the front of your towed vehicle you can use the Roadmaster Extension Loop for Towed Vehicles # RM-300150-00. This has a 4-way vehicle side connector on each end.
    view full answer...

  • Installation Instructions for Trailer Wiring Harness 18252 for a 2008 Smart fortwo
  • The trailer wiring harness # 18252 is a universal hardwire type of harness so it does not have vehicle specific instructions because it fits so many vehicles. However, the process for installation is the same for all vehicles. You will use the included circuit tester to test each wire behind the tail lights. The white wire is ground and attaches to a clean bare metal surface. Brown attaches to the running light wire. Yellow is for the left turn signal/left brake light. And green is for...
    view full answer...

  • Parts Needed to Flat Tow a 1995 Jeep Wrangler with a Falcon 5250 Tow Bar
  • Tow bars are not vehicle specific but the base plates are. You can use the Falcon 5250 tow bar with your 1995 Jeep Wrangler as long as you first install the correct base plates, see link. Either set will be compatible with the 5250 tow bar. You will also need safety cables like # RM-643, a lighting solution, and supplemental braking. Also check the vehicle owners manual for more information on recreational towing of the Wrangler. For lighting there are several possible options. If...
    view full answer...

  • Can a 2012 Honda Civic with Automatic Transmission be Flat Towed Behind a Motor Home
  • While there are people that flat tow the 2012 Honda Civic automatic, I have found that Honda states that the vehicle should not be flat towed. You will want to consult the owners manual to verify the flat tow-ability of the vehicle. If the owners manual says not to then I do not recommend going against what Honda says. If you find that the vehicle can be flat towed then there are 5 items you will need: base plates, tow bar, safety cables, lighting, and supplemental braking. Blue Ox base...
    view full answer...

  • Parts Needed to Flat Tow a 2006 Honda Element with a Sterling Tow Bar
  • The Roadmaster XL base plates, # 1541-1, are compatible with a 2006 Honda Element (not EX-P models) and the Sterling tow bar. The EX-P models just have a different design and require their own style base plates to fit. So after base plates and the tow bar, the next item you will need is safety cables if you do not already have some (the Sterling tow bar should have come with some). I recommend using straight cables # RM-649 to fit in the channels in the tow bar. Next you will need...
    view full answer...

  • Parts Needed to Flat Tow a 2009 Pontiac G6 GT Behind a Motor Home
  • You can use the Demco base plates # DM9517188 for your 2009 Pontiac G6 GT. But first, you are going to want to consult the vehicle owners manual to determine if the vehicle can be flat towed and if there are any special requirements. From what I found if the vehicle has the 3.9 liter V6 motor it cannot be flat towed. But it is not clear if it can be dolly towed or not. You would need to talk to a GM tech at a dealership to determine if dolly towing is acceptable. If you find that you...
    view full answer...

  • How To Make a Trailer Wiring Harness Adapter with Two Vehicle Side Trailer Connectors
  • In order to obtain a trailer wiring harness with two vehicle side trailer connectors you will need to either splice two of the Hopkins Wiring Harness with 4-Pole Flat Trailer Connector part # HM48035 into one another with the Deka Heat Shrink Butt Connector part # DW05744-5 or you could just install the Hopkins Endurance Quick-Fix Replacement 4-Way Flat Trailer Connector part # HM48190 onto the opposite end. Unfortunately, we do not have a complete trailer wiring harness like the Roadmaster...
    view full answer...


Do you have a question about this Accessories and Part?




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Info for this part was:

Photos by:
Jackie C
Edited by:
Frances L
Written by:
David L
Expert Research:
Adam R
Updated by:
Laura H
Installed by:
Cole B
Expert Research:
Jeffrey L

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