bing tracking image
  1. Trailer Wiring
  2. Hopkins
  3. Wiring Adapters
  4. Single-Function Adapter
  5. 5 Flat
  6. Plug and Lead
Adapter 4-Pole to 5-Pole Trailer Wiring Adapter - Shorter

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

Item # 47515
lowest price pledge
Retail:$18.55
Our Price: $9.70
You Save: 48%
Trailer Wiring
Orders above $99 qualify for Free Shipping
Shipping Weight: 0.17 lbs
Quantity: 
In Stock
Hopkins Plug and Lead Trailer Wiring - 47515
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Customer Photos

Need help with installation?
Locate installers near me
Lowest Prices for the best trailer wiring from Hopkins. Adapter 4-Pole to 5-Pole Trailer Wiring Adapter - Shorter part number 47515 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
  • All Info
  • Reviews (193)
  • Q & A (0)
  • Videos (4)
  • Photos
  • Why etrailer?

Hopkins Trailer Wiring - 47515

  • Wiring Adapters
  • Single-Function Adapter
  • 5 Flat
  • Plug and Lead
  • 4 Flat
  • Hopkins


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




California residents: click here


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 - Wiring Adapters - 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:  4.8 out of 5 stars   (193 Customer Reviews)


- 47515
by:

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.


Comments
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



- 47515
by:

This item was bought for another individual and has worked out immensely! Kudos to the folks at eTrailer for having exactly what was needed and getting it to us so quickly. I have and will continue to sing their praises for any of your trailring needs!!!


Comments
This adapter is working perfectly after a year. I still highly recommend etrailer for all your towing needs!!!
Don M - 03/31/2022


- 47515
by:

Product as advertised. Shipping slightly delayed but that should be expected with the driver shortage. Have always received quality products from Etrailer.



- 47515
by:

Etrailer is exceptional to work with



- 47515
by:

I've used this product before with good luck, yet the contacts on the last one I ordered corroded in less than a year, which was disappointing.



- 47515
by:

Works as advertised. Needed a 5 pole for by boat trailer and this did the job. Had it installed in 30 minutes


Comments
A year later and no issues.
Chris - 10/04/2021


- 47515
by:

This is the perfect product for when you already have 4-pole trailer wiring but simply want to add a 5th wire for powering the reverse lockout on surge brake trailers or just the backup lights on a truck bed converted into a trailer. It plugged right into the factory connector on my 2011 Ford Ranger. Only ONE splice was needed: the reverse light wire in the taillight. You also have an additional location for wiring in an aftermarket backup camera IF the vehicle's electrical system allows for the extra current. Only complaint is that it didn't come with its own connector cover, but I was able to get that off of etrailer too!


Comments
Still in use, stays well protected with the connector cover, no problems to date!
John E - 02/26/2019



- 47515
by:

Haven't had chance to use it yet, looks good though



- 47515
by:

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.


Comments
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



- 47515
by:

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.



- 47515
by:

I purchased this for my 2019 Subaru Outback, but I have not installed it yet because I have not had to pull the trailer that requires that adapter yet. However I did purchase one of these for my Toyota Highlander several years ago, and it worked perfectly. It takes the signal for the reverse light and uses it to deactivate the trailer brakes so that you can back up without physically going out to the trailer and locking out the brakes.



- 47515
by:

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.



- 47515
by:

easy instal, works great!



- 47515
by:

This is perfect! Instead of having other (longer) 4 to 5 pole adapters that hang and have to be tucked somewhere, this one simply disconnects and is stowed away until needed. Thank you for the great service!



- 47515
by:

been searching for a 4 to 5 flat adapter and yours is perfect. good instructions and follow up was great. I will check with y'all for any future trailer needs.


Comments
Between heart attach and broken foot, i have not gotten installed yet.
Michael J - 07/17/2019



- 47515
by:

The five-to-four harness adapter was exactly what we needed to be able to tow our tent trailer with our car rather than our motorcycle. And it arrived so quickly! Thanks for helping us solve the problem so easily and economically.


Comments
Still working great! Thanks again for the perfect solution to our problem.
Glenn - 06/04/2020


- 47515
by:

Fits good, professional looking installation. I did it myself in the driveway with some help from my wife and a roller jack and some jack stands. Only thing I had to do that I don't think was mentioned in the video was to unhook the tailpipe from the bracket & lower the tailpipe as far as it would go to push the hitch in place to line up with the holes.



- 47515
by:

This adapter works great. I didn't know what I was going to do. I have a couple of boats and trailers, some of them have the lock up breaks that need to be plugged in to operate. With this little beauty installed I can now plug in all of my towable vehicles without rewiring for each. I looked at every auto and trailer shop around me for resolution but could not find anything. Thanks etrailer, you made my life a little easier.



- 47515
by:

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.



- 47515
by:

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!



- 47515
by:

The product's great the price was great and shipping over all is really great



- 47515
by:

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.



- 47515
by:

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.



- 47515
by:

Worked perfectly for our needs. Had a trailer hitch pro install it. Quick and simple for use on our Four Winns trailer.



- 47515
by:

The wiring harness worked great. It solved the problem of a 5 wire harness in a 4 wire plug.


25
193
Show More Reviews

Ask the Experts about this Hopkins Trailer Wiring



  • Availability of 5-Way to 4-Way Adapter
    Sounds like you may be looking for the part # 47515 as this is basically exactly what you described. I attached an install video for this for you to check out as well.
    view full answer...
    Image 1 for
  • 4-Way to 5-Way Adapter Recommendation for Activating Reverse Lock Out Solenoid
    We have just what you would need. To convert your 4-way to a 5-way so that you can run the reverse light circuit all you would need is the # 47515. This will tap into the reverse light circuit of the vehicle and give you the 5th circuit needed to activate your trailer's reverse lockout.
    view full answer...
  • How to Tow a Trailer that has a 5-Way Trailer Connector with 1984 Ford F-250 that has a 4-Way
    Since your 1984 Ford F-250 already has as 4-way flat trailer connector all you need for the connector is an adapter # 47515. Your existing 4-way will plug into the adapter and the additional blue wire will need to be tapped into the truck's reverse light circuit using the included quick splice wire connector. I've linked a video of the adapter being installed onto a Nissan Murano. The vehicle is completely different but the process is still the same.
    view full answer...
  • 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 is...
    view full answer...
  • Trailer Connector Adapter to Power Reverse Lock Out on Trailer with Hydraulic Surge Brakes
    It sounds like you have a 4-way trailer connector on your 2015 Ford F-350 and a 5-way connector on the 2010 GMC. The fifth pin on the 5-way connects to the truck's reverse light circuit and tells the trailer's reverse lock out to prevent the brakes from locking up. If the Ford only has a 4-way connector it's missing this feature. You can use an adapter like the Hopkins # 47515 on the Ford and connect the extra wire to its reverse light circuit to power the fifth pin. If the Ford has...
    view full answer...
  • How Long is the Wire that Comes with Adapter for Back-up Light Connection?
    The wire attached to the 4/5-Way measures 19-1/2 inches from the 5-Way to the red single pole connector. The loose piece of wire that runs from the red single pole to the reverse light measures 35 inches. In total, from the 4/5-Way to the reverse light you have 54-1/2 inches of wire.
    view full answer...
  • Recommended Connector Conversion For 4-Way To 5-Way For A 2002 Ford F-150 Super Crew
    A good connector for your needs is the Hopkins 4-Pole to 5-Pole Trailer Adapter Item # 47515. It changes your 4-pole flat into a 5-pole flat connector on your 2002 Ford F-150 Super Crew. The blue wire gets spliced into the reverse light wire on your truck which is easily done with quick splice wire connector. After that, you should be good to go.
    view full answer...
  • Can the Adapter 4-Pole to 5-Pole Trailer Wiring Adapter Be Unplugged While Not In Use
    Yes, the Adapter 4-Pole to 5-Pole Trailer Wiring Adapter part # 47515 can be unplugged and stored inside the vehicle while not in use or when only a 4-way is needed. I would however tape up the female bullet style connector which gets spliced into the reverse light circuit on the vehicle.
    view full answer...
  • Wire Gauge Used on Hopkins 47515 4-Pole to 5-Pole Trailer Wiring Harness Adapter
    The blue wire of the Hopkins # 47515 4 to 5 pole trailer wiring harness adapter is 16 gauge. To view a typical installation, click the linked video.
    view full answer...
  • Will 4-Way to 5-Way Adapter 47515 Work on 2021 Toyota Corolla Hybrid
    That will depend on what you plan to power with the reverse light for the trailer wiring. Most likely it's just a reverse lockout solenoid which does not draw much and would be no problem for the 4-way to 5-way adapter part # 47515 that you mentioned. If it's several incandescent reverse lights I could maybe see it being an issue. Which if that were the case you could just convert them to LED by replacing the the bulbs.
    view full answer...
  • 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 # 40376 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...
    view full answer...
  • Locating Reverse Lamp Circuit in 2012 GMC Terrain
    The Terrain has the reverse lamps in the liftgate, so you'll need to locate the wiring harness that feeds the liftgate. The wiring harness can usually be found behind one of the trim pieces that cover the inside corners to either side of the liftgate. Have a friend place the transmission in reverse, as you use a circuit tester like part # 40376 and test the wires in the harness until you find a wire that only shows current when the transmission is placed into reverse.
    view full answer...
  • Installation of Hopkins 4-Pole/5-Pole Trailer Adapter 47515 on 2016 Jeep Wrangler Unlimited Sport
    Auto makers don't always use the same wire colors in vehicle production so color alone is not a reliable method to determine what signal a specific wire is carrying. The surest way to know is to use a circuit tester like # 40376 to test the wires at the taillight while a competent helper carefully shifts the vehicle into reverse (with the parking brake on for safety). This will give you 100-percent assurance that you have found the correct wire to connect to the blue wire on the Hopkins...
    view full answer...
  • Where Does Blue Wire on 4-Pole to 5-Pole Trailer Wiring Adapter Attach On 2013 Acura MDX
    It is not recommended to connect the blue wire from the 4-Pole to 5-Pole Trailer Wiring Adapter, part # 47515 to any wiring other than the wire for your reverse lights on your 2013 Acura MDX. You will need to locate the wiring for the tail light behind the tail light housing and use a circuit tester like part # 40376 to find the wire that only has power when the vehicle is placed in reverse. You can use the included quick splice connector to attach the blue wire to and then simply plug...
    view full answer...
  • Trailer Wiring Recommendation for 2017 and 2008 Toyota Highlander
    For your 2017 Toyota Highlander the correct 4-way harness for your vehicle since it has the tow package is the part # 56042. To convert to a 5-way you would need # 47515. For your 2008 the same # 56042 is a confirmed fit as well.
    view full answer...
  • How to Wire in an Adapter 4 Pole to 5 Pole Adapter # 47515 For a Reverse Lockout
    The wire you are going to be looking for to activate the reverse lockout feature for your surge brakes will be the wire that powers the reverse light bulbs. I would recommend you use a circuit tester # 3808 to determine which wire has power when the reverse lights are illuminated and no voltage when the lights are not activated and then use a quick splice Connector # 804C to tap into this circuit and run wire from the quick splice to the 5-way. I attached a review video for a Adapter 4...
    view full answer...
  • 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 find...
    view full answer...
  • 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 # 40376, 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...
    view full answer...
  • 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...
    view full answer...
  • How to Tap into Reverse Light Wire on a 2008 Cadillac SRX to Install 4-Way to 5-Way Adapter 47515
    Getting to the wiring for the reverse light if the reverse light is in a hatch such as on your 2008 Cadillac SRX can be challenging. But that wiring has to exit the hatch and go into the rest of the vehicle so you should be able to locate the wire at that point. This is normally at the top of the hatch. The wires will all be covered so you will have to cut a slit in the protective cover to access the wires. Then use a circuit tester such as # ALL640595 to test the wires to find the reverse...
    view full answer...
  • Hopkins Wiring Harness # 43475 and 5-Way Adapter Recommendation 2000 Toyota Sienna
    Yes, there is a way to get a 5-way at the back of your 2000 Toyota Sienna, but you would first need to install the Plug-N-Tow Vehicle Wiring Harness, part # 43475, that you referenced. I attached installation instructions for this product below. The next thing you would need is a Adapter 4 Pole to 5 Pole Trailer Wiring Adapter, part # 47515. This will give you a 5-way at the rear of your vehicle and would also give you the option to decide what you want the fifth pole to be. Some people...
    view full answer...
  • Troubleshooting a 4-Way Trailer Connector and Adding a 5-Way on a 2016 Kia Sorento
    Since everything is working on the new 4-way except the running lights are weak start with checking the ground connection. Make sure it's on a clean bare metal surface free of paint and debris. The running lights of a trailer usually draw more power than the brake and turn signals so it may be the ground just isn't strong enough for the higher draw. The next thing to check is the connector where the new harness plugs into the vehicle wiring. Make sure all of the pins are in good shape...
    view full answer...
  • Does Blue Wire of Hopkins 4-Way to 5-Way Adapter Need to Connected
    Yes, the trailer lights will work if you don't connect the blue wire of the Hopkins # 47515. With that being said there's not much point in getting the adapter if you're not going to connect that wire. The 4-way you already have will connect a trailer's 5-way. you'll just have an extra exposed pin on the trailer side.
    view full answer...
  • How To Convert Trailers 4 Pole Trailer Connector To A 5 Pole
    I believe I have what you're looking for, the Adapter 4-Pole to 5-Pole Trailer Wiring Adapter # 47515 will plug into your vehicle's existing 4 pole and the blue wire will splice into your trailer's reverse light wire converting your 4 pole to a 5 pole.
    view full answer...


< Previous
123. . .5



Do you have a question about this Trailer Wiring?




  • Why etrailer.com?

    At etrailer.com we guarantee:
  • Highest quality trailer wiring for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate trailer wiring information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Robert G
Expert Research:
Robert G
Employee Patrick B
Expert Research:
Patrick B
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee John H
Expert Research:
John H
Employee Adam R
Expert Research:
Adam R
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Victoria B
Expert Research:
Victoria B
Employee Joshua S
Video Edited:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Alan C
Test Fit:
Alan C
Employee Shane H
Test Fit:
Shane H
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Updated by:
Alexander C

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.


Product Experts Available Now!
Call 800-298-1624