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Adapter 4-Pole to 5-Pole Trailer Wiring Adapter - Shorter

Item # 47515

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hopkins wiring adapters 5 flat adapter 4-pole to 5-pole trailer - shorter
hopkins wiring adapters 4 flat adapter 4-pole to 5-pole trailer - shorter
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hopkins wiring adapters 4 flat 47515
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hopkins wiring adapters 4 flat 47515

  • Wiring Adapters
  • Single-Function Adapter
  • 4 Flat
  • 5 Flat
  • Plug and Lead
  • Hopkins
Lowest Prices for the best wiring from Hopkins. Adapter 4-Pole to 5-Pole Trailer Wiring Adapter - Shorter part number 47515 can be ordered online at or call 800-298-8924 for expert service.

Hopkins Wiring - 47515

Trailer wiring adapter that changes the 4-pole flat on your vehicle into a 5-pole flat.

The blue wire gets spliced into the reverse light wire on the vehicle which is easily done with the included quick splice wire connector.

Hopkins # 47515, TAP # 37515

47515 Adapter 4-Pole to 5-Pole Trailer Wiring Adapter - Shorter

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Adapter 4-Pole to 5-Pole Trailer Wiring Adapter - Shorter

Adapter 4-Pole to 5-Pole Trailer Wiring Adapter - Shorter
Hopkins Wiring

123 reviews

Code: 47515

In Stock

Our Price: $8.62

  • Wiring
  • Wiring Adapters
  • Single-Function Adapter
  • 4 Flat
  • Plug and Lead
  • 5 Flat
  • Hopkins
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Video of Adapter 4-Pole to 5-Pole Trailer Wiring Adapter - Shorter

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

Video Transcript for Hopkins Wiring 47515 Review

Today, we'll be reviewing part number 47515. This is the Hopkins Adapter 4-Pole to 5-Pole Trailer Wiring Adapter. The trailer wiring adapter is going to change the 4-pole flat on your vehicle into a 5-pole flat. You can see here that you have the 4-pole connections you plug into the 4-way flat on your vehicle. On this side, it's going to convert it over to a 5-way connection. Now, the blue wire is the wire that's going to get spliced into the reverse light wire on the vehicle, which is easily done with the included quick splice wire connectors. That is included with this part number.

This is going to be great for use with marine trailers equipped with surge breaks to eliminate rewiring your vehicle or trailer. When installing this, you want to make sure to use a tester to locate the backup wire at the rear of your tow vehicle. You're then going to splice the blue wire onto the backup wire of the tow vehicle using the supplied splice connector. Once you have that done and secure, then you can simply just plug in the vehicle end and the trailer end and then you would be all set to go. The blue wire, you can see here that it has a little inaudible 00:01:06 connector on it that connects the two pieces together. When fully connected, that's going to give us a total length of around 56 inches. That's going to do it for today's review of part number 47515. This is the Hopkins Adapter 4-Pole to 5-Pole Trailer Wiring Adapter.


Customer Reviews

Adapter 4-Pole to 5-Pole Trailer Wiring Adapter - Shorter - 47515

Average Customer Rating:  4.9 out of 5 stars   (123 Customer Reviews)

- 47515

by: Terry L.05/09/2017

I had a 2 inch trailer hitch and 4 pole flat wire harness professionally installed on my 2001 Dodge Ram Pickup. When I bought my boat the trailer was wired for a 5 pole flat harness. Took my truck back to the installer to have the harness exchanged and was told that there was no 5 pole flat harness made for my 2001 truck. I asked about splicing a 5 pole flat harness to the 4 pole flat harness and was told by the installer that they don't do splicing and because the 4 pole harness was already installed I couldn't get a refund. So the search was on to fix this problem. Stumbled upon the etrailer E-commerce site and found what I was looking for. A 4 pole flat to 5 pole flat adapter. The price was right, the service was 5 Star and I received the adapter in 4 days which was perfect. I had time to install it, and get my boat on the water that weekend. Thanks George J. I will be using etrailer for all my trailer needs. 378105


Hello Terry, Thank you for purchasing our Wiring Adapter!! Hopkins appreciates your review and picture and looks forward to doing more business with you in the future. Enjoy your time on the water!!

Hopkins C from - 05/11/2017


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by: BSM09/26/2014

This product is very well made. Instructions are a bit brief, but plenty of info online to get it installed. The reverse wire on my car was too small to work with the splice, but I connected them directly w/ a "T". Worked flawlessly with my trailer. The length of the wire on the adapter allows you to make the connection INSIDE the car which will surely extend the life of the connection. Overall great and simple design. 153312


Still works but seems sporadic at times. Will investigate my hydraulic servo for the brakes to ensure they are locking out as required to reverse.

BSM - 09/27/2015


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by: Robert R07/10/2014

Great product and quick delivery. Video was very helpful and made installation easy. 140684


Its still working perfectly!

Robert R - 07/10/2015


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by: Al S10/06/2014

Great product! I have a Jeep Wrangler Unlimited that only has a four pole flat connector. I have a boat thats needs a five pole because it has surge brakes. This was the perfect solution. I just had the fifth wire connected to the back up light and plugged this five to four pole adapter that was already on the vehicle. Problem solved. It came quickly. I accidently ordered two and I got a call from Etrailer questioning my order. I thanked them and said I only needed one. They saved me the cost of the second adapter when most companys would have just sent them both- and charged me for two. 154766

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by: Jim T07/03/2013

Watch the video! This product connects so easy I was up and running in 20 minutes. 87430


still in use

Jim T - 07/09/2014


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by: Dave02/08/2015

Nice product, easy to connect, reasonlbe price. 172864


Perfect works great

Dave - 04/08/2016


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by: David01/21/2014

Perfect 114426


Still working perfect no prob.....

David - 01/21/2015


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by: Dean A.05/11/2015

I put this on my 2016 Kia Sorento. Do yourself a favor and watch this instructional video "Hopkins Trailer Wiring Adapter Installation - 2014 GMC Acadia". Another great tip for my application is to buy an extra 20 feet of 16 guage wire. I ran the wire from the tailgate on the inside of the weather stripping and snaked the wire into the utility tray in under the back flip up compartment. When I need to hook up the adapter - I just run it out of the tailgate and hook it up. This keeps the adapter out of the elements when not in use. 191722

- 47515

by: cliff07/31/2014

exact !!!! 143896



cliff - 07/31/2015


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by: Mark L06/20/2012

Put this on an '05 Ford F150. Simple install and took only 5 minutes. Drivers side reverse tail light has two screws on the tailgte side. The hot wire for backup light was brown w/ a red stripe. Unfotunately, my package didn't have the wire splice connector inside as it was suppose to so I used stuff I had at home. Works like a charm. Very clean looking with no extra wires dangling. Should get 5 stars but the lack of connector bummed me out and I didn't have time to return it. Cheers 44918

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by: JP09/02/2017

This adapter is wonderful! It continues to work like a charm, was easy to install, and the price was right. Needed it for hauling my boat trailer that has hydraulic brakes. It has made it through all kinds of Wisconsin and Minnesota weather on my Jeep Wrangler and will last like any other wiring part that is exposed to the elements. I highly recommend this to anyone looking to adapt 4 pole to 5 pole trailer wiring. 428281

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by: Jason B.09/29/2014

This product was everything that is says that it is. Suggestion for hatchback owners, though. See if your reverse lights are in the hatchback or on the fender panels before purchasing this product. If they are in the hatchback, as in the 2014 Escape, then you will need to purchase a longer adapter or additional wiring as the routing of the wires to the closest reverse wire is substantial. 153594

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by: John L.10/29/2017

Received my order an have put it to use without any problems. is an excellent source for all you trailer needs and the process to find what you need is as easy as turning a page. From now on, no more jumping into my truck and running around town looking for what I need. Hit the on button and go to favorites and click 447163

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by: Arthur L.07/22/2014

Excellent product. Connected it in about 10 minutes. Had to remove the taillight and splice to back-up light (splicer included). Easy install (pug and play) and works great. Thanks for having this online at your store. Could not find one locally in Houston area (can you imagine). Excellent pricing and free shipping! Doesn't get any better. 142512

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by: Ben R.06/11/2015

Terrific online company! Their website is easy to use and contained tons of information, including multi-angle pics and videos, so I was sure I was getting the exact part I needed. It shipped very quickly and I had the wiring installed and complete in just a few days after I placed my order. I highly recommend! Thank you!!! 202471

- 47515

by: Tom F06/07/2011

I Have been looking for this product for a long time. I did not know the part number or even that it existed, I just had a need. At I not only forund this product. I found a couple versions of the same solution. Plus etrailer showed me a video on how to install it. Great site 16301

- 47515

by: Chris03/11/2009

Great Product! It was a very easy install. The blue wire is only long enough to go to a reverse light that is on the rear corner. I had to buy additional wire from the auto parts store to continue the connection up the side of my vehicle and through the back hatch. But it works great. 1639

- 47515

by: zev Briskman03/08/2017

Amazing product! Great customer service! installed on my customers vehicle and sent it down to FL, customer couldn't be happier!!!! the people at etrailer really care about you as a customer and they are really on top of their game. the only place i will ever use for vehicle products! 355035

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by: Dustin G08/03/2015

Product was shipped on the day I order it and made it to my house in 3 days ... Installed in about 15 minutes ... And works great ... If anyone has a 2006 F150 the reverse wire in the back taillight is black with a pink strip:) thanks more auto store in Florida should have this ..... 216398

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by: Mike E.03/02/2014

This is an excellent adapter; however, I didn't give it the highest rating possible because the wire is not as long as I needed. While it was easy for me to add a section of wire, I don't understand why it's not about a foot longer so that it would work easier on any vehicle. 118185

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by: Dave S10/19/2014

Product is exactly what I want, but should include a dust cover. Also, wire that leads from plug is too long, and the tail light wire is too short. Where they connect should be closer to the plug, because the way it is you can't really unplug it from underneath the vehicle. 156751

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by: Todd01/22/2014

Part arrived in time and everything's cool. The #1 thing I like about is that I can simply email them my questions and they reply back with all my options. Will be doing that again in a month for the next trailer item I'll be needing soon. Thanks. Todd 114450

- 47515

by: Tom O06/19/2015

Very useful and easy to install along side the 4-flat that I installed at the same time. The toughest part was locating the reverse light wire. This was of better than expected quality and the wire was just the right length for my 2006 Jeep Commander. 204511

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by: P Conrad07/27/2017

Arrived very quickly with the basic shipping. Adapeter seems to be made well. Just googled the diagram of the wiring harness to figure out which wire to spice into (white with the green stripe). Install only too about 5 minutes all said and done. 411456

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by: Chauncey06/20/2017

Worked great. Had a 4 pole flat on my Xterra and bought a boat with surge brakes that needed 5 pole to deactivate brakes when putting in reverse. Hookup was simple. Just plug into 4 pole. The 1 wire goes to reverse tail light wire. 396573


That’s the kind of comments we love to hear Chauncey!! Hopkins appreciates your business and we are grateful you purchased our 47515 Wiring Adapter. We think you will really like this product. If you have any concerns or questions, please get in contact with etrailer customer service. Thank you!

Hopkins C from - 06/26/2017


- 47515

by: Albert Anable04/03/2011

The adapter works great. The installation on a 2005 Subaru Outback is a bit more difficult because the backup lights are located on the liftgate. Still only took about 1/2 hour. Now I just need to find a cover for the 5-Pole! Al 11001

- 47515

by: GeorgeB03/31/2017

Took me ten minutes to remove my rear tail light cover and splice into the reverse light wire. One tie wrap later and I was done. Simple to find the reverse light wire on the wrangler by just looking which ones run to the bulb. 360952


Thanks for the review on the Hopkins Wiring Adapter, GeorgeB!!! Hopkins appreciates your business.

Hopkins C from - 05/16/2017


- 47515

by: Fred M10/13/2016

Works as promised. Easy to install, easy to use. Allows me to use my 5-pin Boat Trailer plug with the vehicle's 4-pin set-up. Adds the extra Reverse Line to turn off trailer brakes when backing up, wouldn't be without it! 306218

- 47515

by: Steve02/18/2013

Ordering was easy; shipment was quick; the part arrived as expected and worked great. It was very easy to install. Took all of 10 minutes at most! Thanks! 66804


Thanks! It has worked great. I have been very pleased with the product.

-- comment by: Steve - 02/18/2014


- 47515

by: Robert H.09/02/2017

Trailer light adapter , Easy find on, good price (much less than several parts sights)received(correct part), by mail, in less then a week. Also had a followup from etrailer rep to make sure all was well. 428245

- 47515

by: Bob J04/23/2017

I needed this part to tow my boat trailer and found it easily on your site. Only took a few days to receive it and could not have been any easier. No complaints and a great site with plentiful information as well. 371191


Thanks Bob J. for the nice words about Happy Boating!!!

Hopkins C from - 04/26/2017


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by: chuck b10/28/2016

None of the local automotive parts stores ( 5 different companies ), carry this wiring adapter, found this on etrailer and received it 3 days after placing the order on line. Quickly installs in ten minutes. 311521

- 47515

by: Duane B12/05/2014

The 4 to 5 pole adapter was exactly what I needed to pull my new boat with hydraulic brakes. I installed it myself in less than 10 minutes saving me the time and cost of going to an RV or trailer store. 163414

- 47515

by: Brian B10/28/2016

works perfect, just the trick because I use various tow vehicles the all in one extension saves me from a "darn it moment". Every time I use it I say thank God I bought this. 311748

- 47515

by: Keith V.04/29/2014

I purchase the 4 to 5 pin trailer plug adapter for my boat trailer. The product was just as described and installation was super easy. Fast shipping and packaged well. Keith 128114

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by: k4racer07/21/2017

Quick and personal service - thank you for having a human being available for questions! Everything arrived in less than a week. Will order from again! 408745

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by: Bill C10/01/2015

Recently bought new trailer having 5 pin connector. Purchased 4 pin to 5 pin adapter that worked out great. Product was easy to install and an inexpensive fix to my issue. 228721

- 47515

by: Bob08/26/2015

The 4 pole to 5 pole adapter arrived in a timely manner and was extremely easy to install. I thought I was going to have to re-wire everything before I found this product. 221785

- 47515

by: H. David F.03/18/2015

I got this adapter for pulling my boat, the extra wire hooks to reverse wire that releases surge brakes when backing your boat up. Great product, and simple installation. 179395

- 47515

by: John G11/03/2014

I got the adapter fast and it was exactly what i wanted. I installed it quickly and it works perfectly. I will use Etrailer anytime i need trailer parts. Thanks John G 158943

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by: Bob Wrobel10/02/2014

Product is perfect. It works as advertised. I am able to hook up my motorcycle cargo trailer and motorcycle camper, if I need to pull them behind my 2013 Ford Edge. 154146

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by: Kevin06/07/2011

I received this part in a timely manner and it matches my needs perfectly. I've purchased several parts from and will definitely be a returning customer. 16274

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by: Monty S02/28/2013

Received the adapter very quickly. The on-line tutorial was great and was able to install the adapter on my Ford 150 in less than 5 minutes. Works like a champ. 68147

- 47515

by: Tim P.04/27/2013

Exactly what I ordered and timely shipped. I love the tutorial videos really made trailer wiring easy to understand......I will definetly use etrailer again. 78144

- 47515

by: DAVE H07/21/2015

Easy quick fix for 4 to 5 pole on car wiring. Had to come thru hatch back on 2014 Highlander could have used a little longer wire but had some available 213391

- 47515

by: Lyle S05/14/2015

Very simple connection to a late model CUV. It works great and solved my surge brake issue with minimal expense and no aggravation. I highly recommend. 192993

- 47515

by: John Kirschenheiter03/17/2015

George J The 4pin flat connector to a 5 pin flat connector worked perfect. The quality was excellent. Thank you for a great product and great service. 179145

- 47515

by: John S.11/03/2014

Product was exactly what was advertised and just what I needed to to adapt to a five pin harness on my sons boat trailer. Great, FAST delivery. 159022

- 47515

by: Rich S10/08/2016

Didn't realize I would be splicing and wiring into existing wiring but not a big deal. As always the videos and tutorials were very helpful! 304530

- 47515

by: Mr Larson05/05/2014

The adapter fits perfectly. Thanks for the follow up. We need to test to make sure it works, but if it is a standard setup, it should work 128889

Show More Reviews

Ask the Experts about this Hopkins Wiring
Do you have a question about this Wiring?

  • Trailer Wiring for a Motorcycle Towing a Motorcycle Trailer
  • Normally, the 5 wire flat connector will accept a 4 wire flat connector and work properly. The extra circuit on the 5 wire connector is normally wired to power a reverse lockout or electric trailer brakes not the brake lights. If your motorcycle has the brake light circuit connected to the extra circuit you will need to do some re wiring or install a converter, item # 119178KIT, on the motorcycle. Your trailer should be wired as follows. White wire = ground, brown = tail light, yellow...
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  • Parts Needed to Backup Without Putting on the Surge Brakes When Parking or Launching a Boat Trailer
  • Yes, there is a way to back up your boat trailer and keep the surge brake actuator, # T4332900, from applying pressure to the trailer brakes. You will need an electric lockout solenoid, # T4748800, which will close when you shift the vehicle into reverse, allowing the trailer to be backed. Along with the solenoid, you will need a solenoid cover, # T4835800183, if your actuator is the model 60 actuator that you referenced. The cover will keep the solenoid from getting stepped on and damaged...
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  • How to Wire the Reverse Lockout Solenoid On a Titan Hydraulic Brake Actuator with Electric Lockout
  • The solenoid in the Titan Zinc-Plated, Leverlock Brake Actuator w/ Electric Lockout, item # T4715420, is wired to the reverse light circuit on the truck through the trailer connector on the vehicle and trailer. If you have a factory 7-Way connector on your vehicle the center connection in the 7-Way should be the reverse light circuit and one of the yellow wires should be attached to the center connector in the trailer side connector. If you are towing with 5-Way connectors, item...
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  • What Wire Size Is Needed For 12 Volt Power On Truck To Operate Interior Lights On Camper
  • The wire gauge of the blue wire on the Hopkins Adapter 4 Pole to 5 Pole Trailer Wiring Adapter, part # 47515, will be too small to be able to use as a 12 volt power source. You will need to use a 10 gauge wire on your truck to run a 12 volt power wire to your trailer connector, along with a 40-amp circuit breaker. I would recommend to install the Hopkins Adapter 4 Pole to 7 Pole and 4 Pole, part # 37185, on your truck. This Hopkins adapter will plug into your 4-flat connector on your...
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  • Replacing 4-pin Plug with a 5-Way Plug So I Can Back My Trailer
  • If you have a working 4 pin trailer connector and a boat trailer with surge brakes then you will not need a 4 pin wiring harness. If your trailers 5-pin connector is the flat style you can use the 4 Pole to 5 Pole Trailer Wiring Adapter, part number 47515, and splice it into the reverse light circuit behind one of the taillights with the quick splice that is included with the adapter. If you need an extension for your trailer connection to mount the five pole connector to a bracket, part...
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  • Comparing 4-Way to 5-Way Trailer Connector Adapters # 20036 and # 47515
  • 4-Way to 5-Way adapters # 47515 and # 20036 are essentially the same. The difference is that # 20036 has longer wiring with it than # 47515. For that reason we normally recommend # 20036. The 4-Way to 5-Way portion is 18 inches long. The blue wire though is 60 inches long from end to end. Additional light gauge wire, such as # 16-1-1, sold in 1 foot increments could be spliced in if a longer connection is needed.
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  • 4 to 5-Way Adapter Recommendation for a 2014 Jeep Wrangler towing a Boat Trailer With Surge Brakes
  • What you need is the Adapter 4 Pole to 5 Pole Trailer Wiring Adapter # 47515. This will plug into your existing 4-way on your 2014 Jeep, and then the blue wire will get ran to the reverse light circuit of your vehicle taillights and then tap into that circuit with the included quick-splice connector. I attached a video that shows a typical installation for this product for you to check out to the right.
    view full answer...

  • Wiring The Blue wire on 4-pole to 5-pole Adapter
  • The blue wire on the Trailer Wiring Adapter 4-pole to 5-pole is normally used for boat trailer connections where the trailer surge brakes need to be locked out. The blue wire is connected to the vehicles backup light circuit so that when the vehicle is shifted into reverse the surge brake coupler will not activate the trailer brakes when backing up. This adapter, blue wire included, is meant to be connected at all times when towing the trailer. The blue wire could be connected to another...
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  • Where to Find the Reverse Light Wire at the Back of a 2013 Ford Escape
  • On the 2013 Ford Escape, testing the wires to find the right one is the only way to know for sure if you have the correct wire since going by color is not always reliable. Use a circuit tester such as # 3808 if you do not already have one to test and find the correct wire. It looks like the reverse light wiring will go through the rear hatch. If you were to open the hatch you may be able to find the harness at the top that goes from the hatch into the vehicle. That is likely the easiest...
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  • Trailer Hitch, Drawbar, Hitch Ball, and Trailer Wiring Recommendations for a 2008 Jeep Commander
  • I can certainly point out everything you will need to tow the boat with your 2008 Jeep Commander. First, you will need a hitch. There are several available but I recommend going with a Class III hitch rated for weight distribution because you never know what you might be towing in the future. I would go with Draw-Tite Trailer Hitch, # 75338. This is a Class III, 2 inch trailer hitch, capable of 500 pounds tongue weight capacity and 5,000 pounds gross trailer weight. When used with weight...
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  • 5-Way Trailer Wiring and Hitch Recommendation for a 2012 Ford Explorer
  • If you do not have a 4-way present at the rear of your 2012 Ford Explorer I would recommend you get a Tow Ready Custom Fit Vehicle Wiring Harness # 118540. This is a very simple install, I attached installation instructions and a installation video for you to check out as well. Once you have a 4-way you will be able to install a Adapter 4 Pole to 5 Pole Wiring Adapter # 47515. This will basically just plug right in to your 4-way and then will give you the fifth circuit that you could...
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  • How to Make a Charge Wire for Flat Towing Vehicle with Tow Vehicle with 4-Way
  • To trickle charge the battery on your vehicle you will need to use a # 37185 to convert the 4-way on your tow vehicle to a 7-way. You will need to route the purple wire of this 7-way to the positive side of your battery on your tow vehicle through a circuit breaker like part # 9510 and 10 gauge wire like part # 10-1-1. Now for an umbilical to go from the 7-way to a 5-way you will want to use the part # HM47075. You will then need to use the part # 47515 to convert the 4-way on your toad...
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  • Adapting 2010 Ford E-350 With 4-Pole Wiring Harness to Tow Boat Trailer With 5-Pole Flat Connector
  • There are several ways to adapt your different tow vehicle and trailer connectors. The most cost-effective method to put a 5-pole flat connector on your vehicle is to use Hopkins 4 Pole to 5 Pole Trailer Wiring Adapter, part # 47515. Installation is simple and consists of connecting your existing 4-pole and making one single splice connection to the reverse light circuit at the back of the van. You can use a circuit tester such as # 40376 to confirm which wire carries the reverse light...
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  • Adding Trailer Wiring to a 2009 Suzuki Boulevard C90T Motorcycle to Tow a Trailer
  • First, you are going to want to determine the functions of the 5-Way connector on the trailer in order to find a wiring solution that will be compatible. Motorcycles have separate turn signals and brake lights. If the trailer also has separate turn signals and brake lights, making a wiring harness will be easy. You can just use a 5-Way harness like # 20016. You will have to wire it to the bike by function to match the function on the trailer 5-Way. Use a circuit tester like # 3808 to...
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  • Tapping Into the Reverse Light Circuit on a 2010 Hyundai Santa Fe to Install a 4 to 5-Way Adpater
  • Vehicles that have the reverse lights in the hatch can make tapping into the reverse light a little more difficult than most people would like. What I recommend doing is checking for the wiring harness leading to the lights UNDER the vehicle. Then use a circuit tester like # 3808 if needed to test the wires to find if the reverse light circuit is there. If you cannot find it then there is another thing you can do. Use the vehicle owners manual and/or the legend on the power distribution...
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  • Can a USA 4-Way Trailer Connector be Used with an Australian Trailer Configuration
  • The Australian 7-pole is like the European 7-pole in that it has separate turn signals and brake lights (and a few other functions not used in the states). A US 4-Way and trailer will have the turn signals combined with the brake lights on each side of the trailer. So you would have a ground (earth), running lights, left turn and brake lights, right turn and brake lights. In order to separate out the turn signals from the brake lights you would need a converter, # 118158. You would wire...
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  • Can an Electric Back Up Lockout Solenoid be Added to a Titan Aero 7500 Brake Actuator
  • The Titan Aero 7500 Brake Actuator with Manual Lockout, item # T4606500, has a manual lever, on the side of the coupler, that requires getting out of the vehicle and activating to back the trailer without the brakes activating, see page 7 of instructions link. An electric lockout solenoid can be added to the Titan Aero 7500 Brake Actuator, which will use the reverse light function from your vehicle to lockout the trailer brakes whenever the vehicle is shifted into reverse. The Replacement...
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  • Adding a 7-Way and Brake Controller to a 2012 GMC Terrain and Old Trailer
  • Trailers have combined turn signals and brake lights on the same circuit so you wouldn't tap into one of those otherwise the brakes would turn on with the blinker like you said. You are going to have to add a 7-Way connector to the 2012 GMC Terrain and to the trailer. And you will also need a brake controller. Since your Terrain already has a 4-Way you will just need # ETBC7 to add the 7-Way. I have included some links that show and explain the ETBC7 installation as well as the brake...
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  • Recommended Converter To Convert Combined Wiring On Vehicle For Trailer With Separate Wiring
  • We do have a converter that will let you convert the combined brake and turn signals from your Honda without splicing into the vehicle wiring. The wiring would be done on your trailer. I recommend part # 118158. You would cut the harness on your trailer and wire it to the 118158 converter as shown in the attached photo. Since it is not waterproof, you will need to use a junction box on the trailer like part # 38656. You would need to use a 4-way trailer-side connector like part...
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  • Locating the Reverse Light Wire on a 2013 Lexus RX350 for a 4 to 5-Way Adapter
  • The easiest place to locate a reverse light wire on any vehicle is directly behind the reverse light itself. If that is not easily accessible then there will be a wiring harness that leads to the tail lights that may also contain the reverse light wire. You will need a circuit tester like # 3808 if you do not have one. Test the wires in the harness leading to the tail lights to determine if any of them are the reverse light and tap in there. Another option is to find the reverse light...
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  • Will The Titan Leverlock Brake Actuator, # T4715420, Fit A 2008 Shorelander Trailer
  • For the Titan Leverlock Brake Actuator, # T4715420, to fit your 2008 Shorelander Trailer it needs to have disc brakes and a 3 inch wide channel tongue. The trailer needs to be 6,000 lbs. weight capacity and 600 lbs. tongue weight or less. This actuator has a solenoid for the electric lockout which needs to be wired to the reverse light circuit on the truck through the trailer connector on the vehicle and trailer. If you have a factory 7-Way connector on your vehicle the center connection...
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  • Wiring Harness on 2016 Lexus RX 350 for 5-Way Connector on Trailer with Surge Brakes
  • For a 5-way trailer connector on your 2016 Lexus RX 350 you'll first need a 4-way. If the Lexus includes the tow package you can use # 118252 which will plug into a connector just under the rear bumper. If it does not have the tow package then # 118255 is what you'll need which has a 4-way that plugs into the same place, as well as a ModuLite power module that plugs behind a trim panel in the rear cargo area. Once you have a 4-way you can then use # 47515 which plugs into the 4-way...
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  • 5-Way Adapter Recommendation for a 2008 Mazda CX-9 For Surge Brake Trailer
  • If you don't mind a little bit of wiring I have a much cheaper solution to activate your reverse lock out solenoid. You would just need the part # 47515 that will adapt the 4-way to a 5-way. Basically you just plug this into your 4-way and then wire the 5th circuit up to the reverse light circuit and the reverse lock out solenoid will activate like it should. I attached an install video for this harness for you to get an idea how it would install on your vehicle.
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  • How to Find the Reverse Light Wire on a 2004 Lexus RX330
  • First, located the tail light wiring behind one of the tail lights on the 2004 Lexus RX330. Then, use a circuit tester, like # 3808, to probe each of the wires until you find the one that carries a signal when the vehicle is placed in reverse. You will need to have someone sit in the vehicle cab and put it in reverse. It is a good idea to apply the emergency brake, regular brakes, and even chock the wheels to prevent the vehicle from moving while in reverse. Once you have found the...
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  • Can the 5th Wire of the Adapter 4 Pole to 5 Pole Trailer Wiring Adapter Be Cut Off if Not Needed
  • Usually, on a boat trailer with a 5-Way trailer connector, the 5th wire goes to an electric reverse lock out on a surge coupler. This is so when you put the vehicle in reverse to back up, it will not allow the trailer brakes to engage so the trailer can move. If you do not need the blue wire on the Adapter 4 Pole to 5 Pole Trailer Wiring Adapter, # 47515, you can just tape it up and and stow it out of the way. I would not cut it off because you may need it in the future. If you do...
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  • Can a 4-Way Flat on a Truck Be Used with a Trailer 5-Way Flat without Connecting Extra Wires
  • I recommend using the Adapter # 47515 or # 20036 and not connecting the extra blue wire to anything on the truck. On a 5-Way flat connector, the extra blue wire is normally for an electric reverse lockout which you find on a lot of boat trailers. The brakes on the trailer are probably hydraulic with a reverse lockout on the coupler. The blue wire sends power from a reverse light circuit to a solenoid on the coupler that does not allow fluid to pass through to the brakes when the vehicle...
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  • Can a 4-Way to 5-Way Trailer Connector Adapter be Safely Used on a 2013 Ford Edge
  • The 4-Way to 5-Way adapter, # 47515, will work well on a 2013 Ford Edge and will not short out the vehicle electrical system if installed correctly. Installation is straight forward. The 4-Way on the vehicle plugs into the adapter. The blue wire then will connect to a reverse light wire on the vehicle using the included quick splice connector. This adapter is not circuit protected so if there are shorts on the trailer they could back feed to the vehicle. Make sure the trailer wiring...
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  • Locating the Reverse Light Wire on a 2008 Honda Odyssey to Install a 4- to 5-Way Adapter
  • To find the correct wire on your 2008 Honda Odyssey to connect to the blue wire on the 4- to 5-Way adapter # 47515 you will need to test the vehicle wiring using a circuit tester such as # 3808. It looks like the reverse lights are on the rear hatch of the 2008 Odyssey. There should be a wiring harness that goes from the hatch to the vehicle interior likely up near the roof. There is probably a protective sleeve covering the wires that you will have to move or cut open to access the...
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  • Trailer Hitch and 5-Way Wiring Harness Recommendation for 2011 VW Touareg TDI
  • You are on the right track with the Curt Hitch part # C13116 but I have a wiring solution that will be easier to install. I would first recommend you start with the part # 118668 as it is a custom install harness designed to fit your vehicle that won't require any hardwiring. This will give you the 4-way functions without any hardwiring. Now to convert this to a 5-way you will want the part # 47515. This plugs into the 4-way and allows you to hardwire in the 5th circuit to the reverse...
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Info for this part was:

Expert Research:
Michael L
Expert Research:
Robert G
Expert Research:
Patrick B
Expert Research:
Michael H
Expert Research:
Jameson C
Video Edited:
Joshua S
Video Edited:
Jacob T
Expert Research:
John H
Expert Research:
Adam R
Expert Research:
Jeffrey L
Test Fit:
Alan C
Photos by:
Sam P
Video by:
Chris R
Updated by:
Sarah W
Expert Research:
Victoria B

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