Roadmaster Universal Hy-Power Diode Wiring Kit

by: Bill Dudley06/23/2015

As always great customer service and delivery. I would highly recommend e trailer for all towing needs, and other products they sell. 206606

I got rid of a dolly to go with towbar, best thing Ive done so much easier to hook up and unhook than a dolly. Great product and great customer service cant beat that plus great prices.

William D - 06/22/2016

by: Dave K05/13/2015

I used this for a Jeep Wrangler, probably one of the easier applications. etrailer cautions us to ensure the ground is proper, and I can confirm this. While I found the proper wires using voltage, the gound I used had too much resistance to allow for proper functioning. It took several hours to track it down. But no doubt, when the electical system gives what appears to be impossible data, it is always the ground. I hooked to the proper ground and it works like a charm. I do recommend using heat shrink tubing on the spade connectors. Also I mounted the four flat connector to the bumper. Curt brackets do not fit the connectors in this package without serious modifications. 192669

by: wiring kit08/31/2015

I have not installed it yet but think it will be ok for what I am l needing. 223019

Works like a charm. Was very easy to install and would buy another one if I ever need one down the road.

wiring k - 08/30/2016

by: dave t12/12/2014

I haven't installed this yet. But I know etrailer video will be of great help. 165408

So so had trouble with the connecters unplugging from the deodes. Not enough slack on my part

dave t - 12/12/2015

by: road ranger09/11/2014

kit arrived on time from etrailer.com. high quality product at a fair price. easy to install on my 2014 f-150. good instructions and diagrams for wiring 150667

works great

road r - 09/12/2015

by: JOANNE B09/20/2014

Received wiring within 3 days, included instructions and resource phone #s for help if needed. We will use them again when needed. 152248

Great. No problems.

JOANNE B - 09/20/2015

by: Charles05/20/2018

Work as discribed. The first time for me to use the universal kit and was a little worried about the outcome but I followed the instructions and it works great. The hardest part was routing the wire around the front end area. Wire was just enough, I recommend starting at the front end and route the wire on the passenger side. This is the side of the motorhomes 7 pin plug. Remember to stay away from the exhaust (on most trucks as mine is a Chevy 1500). Product was received within 3 days of purchase which works for me. I give Etrailer 2 thumps up for great service once again. 511182

by: Dave V08/09/2016

I installed the wiring harness yesterday and it took about 4 hours. Thats actually 4 hours of work, in reality it was more like 6 hours but most of the time was trying to figure out how to route the wiring which is not the fault of the harness. Everything worked as advertised with no gotchya's or any issues which was really surprising. I installed it on a 2009 Smart fortwo Passion which I am towing behind my motorhome. My advice for anyone using this is take your time, read the directions carefully before you start and follow them step by step and you should have no issues. 281855

Weve put about 15,000 miles on the MHcar since installing the wiring harness and have no issues what so ever which when towing is a very welcome relief. I am very happy with your product and would highly recommend it.

Dave V - 12/12/2017

by: MED01/22/2013

Installation was relatively straightforward, and the necessary parts were included in the kit. The installation is not technically difficult, but gaining access to some the wiring was somewhat irritating because of the assembly techniques used in modern vehicles. Be prepared for somewhat tedious digging around to get to the wires, and pull enough slack to work with them. Once again, a few extra plastic automotive fasteners and automotive cable fasteners came in handy. They're available at a decent hardware store or Home Depot-like store. 63823

by: Jerry R.04/27/2015

Great Kit 188494

Still working great one year later

Jerry R - 04/26/2016

by: Allen03/17/2018

Wired a Chevy Colorado for towing behind a Motorhome. Was using wireless tow lights. Was always a challenge to place the lights on the rear bumper. Plus used untold quantities of batteries. Now just plug & go. Wiring the harness kit was real easy. Just follow step by step instructions. Only deviation was the clips with the kit crimp onto the wires I soldiered after one came lose. After that have had no problems with all the lights working on the vehicle being towed. Should have done this years ago. 485974

by: Ed T.02/06/2017

Great experience, quick shipping, excellent video and instructional references to go along with the products. I did the installation of the product myself and without the text and instructional video's there is no way I would have been 100% successful. These are the extra value add things that make the difference when shopping with etrailer, I will be a return customer. I am using this product with my 2016 Jeep Wrangler towed by a 2014 Fleetwood Bounder motorhome. 339287

by: Julie W01/08/2017

This wiring kit worked marvelously. I'm pretty handy but electrical things can still be a bit scary for me. I got a little help from the good etrailer people, watched a bunch of videos and finally looked at the wiring diagram sent with the kit. Wiring diagrams are not always as straight forward as I would like but this kit has a very good one. I have bought a handful of products from etrailer and consider them to be a cut above. Julie 330979

The vehicle that I installed the wiring kit in met a tragic death last summer. The new tow vehicle also needed the same wiring kit. The kit is very complete and the instructions are great. Now, think about this........etrailer contacts customers a year later to follow up on their products. Makes you think they actually care about their customers and the products they buy. Almost unheard of in our times.

Julie W - 01/08/2018

by: Ken B01/23/2017

Although I am commenting on this product, I actually would like to comment on the following products. I purchased a brake system, tow bar, base plates and wire harness from etrailer. All of my orders were filled in a timely manner. When I reached out for technical assistance, the advisors were readily accessible. All of the products were installed by me. All of the products were very easy to install by using the video and instructions. 337853

by: Don Featherstone08/23/2011

I received the product and it was exactly what I had ordered, it was easy enough to install by myself. However, the only thing I would caution future buyers on is knowing both your "towed vehicle" and your "tow" vehicle's lighting system. I was a little thrown off by the instructions and how it referred to "combined" and "seperate" light systems. I'm sure if your going to wire your vehicles yourself you'll figure it out as I did. 22587

by: Ed W03/18/2018

Installation on 2018 Kia Soul 486230

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by: Kerry B07/11/2016

This is the 3rd time I've used this wiring harness, I like to trade cars. The first was on a 2008 Pontiac G6 convertible, the 2nd, a 2010 Cadillac SRX, and now, a 2015 Jeep Grand Cherokee Outlander. All 3 were easy to wire and the instructions were VERY helpful! Roadmaster has there stuff together when it comes to RV towing products. And etrailer.com provides great pricing and GREAT support after the sale. 270519

Still works great! No problems what so ever.

Kerry B - 07/11/2017

by: Skip A.02/03/2017

You need to be handy and understand how to make your electrical connections secure. Follow the instructions (view the online video, helps) and all will be fine. This installation makes the towing process much easier than hanging lights on the towed vehicle. Install it..........plug it in to the towed vehicle, and the motorhome and you are done with the lights. Good way to go. 338467

No issues observed. System works great!

Skip A - 02/03/2018

by: Don T.07/14/2015

Hard to give a review...Just received the product today, but must say the service, packaging, and price were all great. Installing the RM 154 should not be a problem for me and the great thing is I ordered two kits, one for myself, that I'll install first and so the second one for a friend should be a cake walk install. Both installs will be on GMC Canyon PUs. 211769

by: Bob C10/18/2016

Universal wiring harness for 2011 Ford taurus arrive super fast and well packaged. I would have liked a kit with 'plug and play' wiring for the Taurus but was not available. I installed one on a 06 HHR and was very impressed. Not so sure about cutting and splicing wiring harnessed an a 2911 Taurus.....find out tomorrow when the job is tackled....Bob 308420

by: Jonathon G.06/05/2016

Installed this product in a 2015 Jeep Wrangler Unlimited. Installation was a breeze and the instructions were clear and simple to follow. For testing, I pulled the jeep behind our Suburban while my wife verified everything was working as designed. One year and several thousand miles later, everything is still working fine. 257388

by: Norman12/16/2017

Installation was accomplished with good instructions. One thing to watch during installation is shorting-out due to cross-wiring. I blew a fuse and was stumped for awhile why lights didn't work as advertised. It was my problem, but replacing the fuse solved it. I enjoy how the lights work without using toad-vehicle battery. 460635

by: Chip H.04/26/2015

Received the order in 4days. Took about 4hours to install on my 2012 Toyota Prius. Most of the time was routing the wording from the front of the vehicle (a function of the vehicle not the wiring. Had to install some jumpers as there was not enough slack in the vehicle wires ti put the diodes in. Excellent product. 188344

by: George M06/10/2016

Universal wiring kit was very easy to install did date me no time at all to install it and it works great and I'm very pleased with it I appreciate your guyses products and I am very happy and work like they're supposed to all of your product that I have installed on my vehicle 05 Dodge Durango thank you 259712

by: Ron Triano08/28/2017

Bought the universal kit and it arrived in a few days, the directions were great as were the Picts. My few questions were answered right away, now a year lTer I switched cars and called support, they helped me again even though I didn't have to purchase anything further. I would recommend them any day. 426119

by: Ed Sievers03/19/2017

Product arrived on time and the installation instructions were very good. An easy install and the lights on my Kia Soul work with the motor home as they should. Zero problems......recommend the RM-154 kit. Ed Sievers in Denver, CO 2007 WGO Outlook 31-C and Kia Soul with 6-speed DIY transmission. 355656

by: Tim H12/20/2016

Everything I needed was included. Had the help of an experienced friend, took a little over 2 hours. 326728

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by: Floyd07/27/2016

Takes time to install wiring from the front of the dinghy vehicle. Easy to install diodes if you follow the Etrailer video and follow the instructions. Probably took me a couple of hours to install due to laying under the truck to route the wiring from the front to the connection to the coach. 276887

by: SkywagonJim08/06/2017

Product arrived on time, and was fairly easy to install. I only spent about 6 hours involved in the installation of the wiring, primarly because I am very particular in routing the wires and shrink wrapping the connections. I highly recommend this product for wiring a vehicle up to be towed. 416742

by: Don05/22/2014

The Universal Hy-Power Diode Wiring Kit contains all that is necessary for installation. It was installed in less than a day and works fine. etrailer is a good company to work with, always ships promptly, and is good at keeping the customer informed of status. 131808

by: Steve F08/12/2017

I did not like this wiring setup. I cut both ends off because the silly bracket they supplied would not hold the rubber mounted flat wire connector firmly. I bought a 4 wire round connector and used that. I am not sure why they don't make a plug and play harness like used on the JK 419512

they work great. I changed to a 2018 Jeep Grand Cherokee and had the dealer switch over. Still work perfectly. Using them again in Oct.

Steve F - 08/15/2018

by: CptJack04/13/2017

This was a much easier install than the Mopar kit that was defective. I received a refund on the "factory" kit and installed this one in half the time. I had to add pig tails to this kit on the right side so this isn't perfect but I had the extra wire and connectors and it was easy. 366728

by: John aldridge10/30/2014

I recently ordered a diode wiring kit for my tow behind GMC Sierra Z71. I used economy shipping and it still arrived in 3 days. The best thing about etrailer site was the installation video. I watched it several times and the installation went like clockwork. Thanks etrailer. 158513

by: Melvyn D01/09/2012

Product was exactly as ordered. Ordered this item for installation on an '09 HHR to be towed behind our Motor Home. It will eliminate alot of potential lighting problems and appears to be simple to install. Shipping was VERY prompt and I will use "etrailer" again, I'm sure. 29364

by: Stephen C.03/02/2016

We put this product on our 2015 jeep Cherokee to enable us to tow it behind our Monaco dynasty motorhome! First of all it was easy to install and has not given us one lick of trouble ! I would recommend this company and its products to any and all of my friends ,! 239116

by: G erreg10/19/2018

Everything went together as advertised . However it would have better if they had a kit with the 6 wire round plug for the front of the car and coiley cord with 6 wire both ends. I just hapened to have a 6 wire both ends coiley cord and don't need the short flat lead 575902

by: Susan07/10/2018

everything went well except i was told that i did not need the brake relay kit and i do. We got it wired ready to leave to go back home and found out we did need the brake relay and when i called to order it they were out of stock so delayed our trip. 540131

by: Bud05/29/2013

First, I'm impressed by the way Etrailer does business (service, quality, quick shipping, communications etc). As for the kit, it has everything needed to setup your car so it can be towed. In fact, it had more than what was needed for my 1998 RAV4. 82345

by: Jerry08/06/2014

Running wire to back of vehicle a bit of a challenge and wires on vehicle had to be lengthened after cutting to facilitate installation without removing all of inside of vehicle paneling. Works as designed after installation. 5 plus hours. 144719

by: Donald01/31/2018

Product works as advertised. Have had no problems with lights working properly. Front plug is out of sight when not in use. Another foot or two of wiring would give more installation routing options on the inside of vehicle. 471627

by: Jonathon11/29/2017

This super simple wiring harness was just what I needed to rig my Jeep Wrangler for towing behind our RV. One year later, still going strong. I'm a big fan of etrailer. Great customer service, quick shipping and follow up. 455715

by: Walt C.06/24/2014

watching the viedo makes instaliton a snap Great product, the Hy-power diode make worth the exter $ The T-one harness is real easy to install The mounting brackets for the 4 pole flat makes for a clean looking install 137341

by: Glen N.01/02/2017

Pretty nice package with just the right amount of wiring and pieces. Simple and straight forward installation on my 2011 Jeep Grand Cherokee Limited 4wd. It will be flat towed behind our 2017 Thor Citation 24SS. Thanks! 329393

by: Jim P.05/14/2012

Installed ok except, the wiring connectors are junk. I went out and purchased 20 quality crimp-on connectors to do the job. Funny thing is that a good connection is essential to having success installing this product. 40395

by: RON S06/12/2014

The wiring kit did exactly as advertised. soooo much easier than buying wire and diodes and doing it yourself. The fact that the 4 wires are molded together make it much easier. The wiring diagrams were excellent. 135404

by: TONY BUTLER07/08/2015

GREAT PRODUCT !! ETRAILER MADE IT EASY ,EVERYTHING IS THERE TO DO A PROFESSIONAL INSTALL, A VERY KNOWLEDGBLE CUSTOMER SERVICE WILL ANSWER ALL CONCERNS YOU MAY HAVE , HIGHLY RECOMMEND . BUY WITH CONFIDENCE. 210222

by: Larry M08/14/2013

If your towing a car or truck behind your motorhome, or coach. This is what the doctor ordered. Is a excellent product made very well and quick and simple. Hook up your tow bar and plug in the light cord. 95018

by: Dave D.07/26/2011

Excellent product with easy to follow instructions As always - etrailer has great products, fair prices, and the best customer service of any online retailer. Keep up the great service!! Dave 20295

by: William M.09/24/2015

Received a Roadmaster Universal HY-Power Diode Wiring Kit-RM-154. It arrived as described and I installed it without any problems. I would recommend this product and this company. 227406

by: Jack C11/04/2016

It was amazing experience dealing with sales, very helpful, amazing delivery service and best of all was the product was so easy to install. Thank you very much Etrailer Jack 313546