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Adapter 4 Pole to 5 Pole Trailer Wiring Adapter - Shorter

Hopkins Wiring

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Code:   47515

Price:$7.99


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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





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 hopkins wiring install
Hopkins 4-Pole to 5-Pole Trailer Wiring Adapter Installation

Video Transcript for Hopkins 4-Pole to 5-Pole Trailer Wiring Adapter Installation

Today we are going to show you how to install the 4-wire flat to 5-wire flat adapter, part number 47515 from Hopkins Towing Solutions. This adapter piece allows us to plug in to the vehicles existing 4-pole plug and adapt to a 5-pole plug that you find commonly on boat trailers with hydraulic brakes that offer a reverse lockout. The adapter piece itself is very simple to install. Again, you have the one side that is going to plug into the vehicles existing 4-pole and the other end will come out with the new 5-pole plug that you will need for your trailer. What we do need to do for this adapter, however, the fifth wire is the reverse lead. So we will need to find the reverse wire on the tow vehicle and manually tap this in. So we are going to start by just plugging the 4-pole in, into the vehicle harness. And then we need to figure out a way to get up to the reverse wire on the vehicle. 0:53

Another nice feature of this adapter is that right in the middle of our reverse wire is a disconnect point. So what we can do is I can actually go ahead and disconnect that wire that is in behind the taillight and it through. But once it is installed, it will allow you to leave this end connected to the vehicle at all times. And if you want to remove the adapter from the vehicle you can just disconnect it at the quick disconnect point. Now the easiest place to wire in the reverse lead is actually behind the taillight itself. We want to go ahead and figure out how we can get behind the taillight assembly. Now on this particular vehicle, if we follow over to the driver side, underneath where the taillight is mounted, there is a hole there that we can easily route the wire up and get behind the taillight. So we are next going to go ahead and take off the driver side taillight and figure out which wire is the reverse wire. Ok, so I am up to the driver side taillight now and we need to figure out obviously how to remove it so we can get to the wires. On this particular vehicle, the mounting screws are on the inboard side. There are two of them here. Take those out so we can get to the wires. 2:09

Ok, with the taillight pulled off, we can see the wires here. And again we are looking for the wire that is activating our reverse lead. The reverse light on the vehicle is always behind the clear lens. So if we go behind the taillight, the two wires going into the clear lens. This one is the ground and this one is going to be our reverse light. And again, on this vehicle it is a red wire with blue stripe. So I am going to cut back a little bit of the tape to hook in my quick splice. From there we will take the provided quick splice, mount it over top of the red wire here and then we will take our other half of our reverse lead wire from our adapter and go ahead and slide it into the other groove on the quick splice. Just take a pair of plyers and we are going to crimp down on the metal tab on the top. And out connection is made. From there we want to go ahead and take the other end of the wire and just feed it down through the opening that we had found earlier. And you want to just feed the full lead down. And then we can go ahead and put our taillight back on. And then back underneath the vehicle, we just need to route the reverse lead wire back over to our adapter. Plug the two pieces together and our installation is complete on it. From there you just want to take your blue wire and go ahead and secure it up out of the way, with some zip-ties if need be. Now I do want to note that this is essentially an adapter piece but it actually does not need to be ever removed from the 4-pole because a trailer 4-pole will actually plug into this new adapter piece just fine, just like it did on a common 4-pole. And that will conclude the installation of the Hopkins 4 to 5-pole adapter, part number 47515.


Customer Reviews

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

Average Customer Rating:  ratingratingratingratingrating4.8 out of 5 stars   (33 Customer Reviews)




- 47515

ratingratingratingratingrating by: Chris03/11/2009

Is this review helpful?


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

ratingratingratingratingrating by: Mike E.03/02/2014

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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



- 47515

ratingratingratingratingrating by: Todd01/22/2014

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Part arrived in time and everything's cool. The #1 thing I like about etrailer.com 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. Todd114450



- 47515

ratingratingratingratingrating by: Mark L06/20/2012

Is this review helpful?


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. Cheers44918



- 47515

ratingratingratingratingrating by: Tom F06/07/2011

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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 etrailer.com 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 site16301



- 47515

ratingratingratingratingrating by: Don P06/22/2011

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As advertised 17694



- 47515

ratingratingratingratingrating by: Kevin06/07/2011

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



- 47515

ratingratingratingratingrating by: Donny P05/10/2011

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This adapter works great. 13238



- 47515

ratingratingratingratingrating by: Albert Anable04/03/2011

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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! Al11001



- 47515

ratingratingratingratingrating by: EA03/18/2011

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Exactly as described. 9677



- 47515

ratingratingratingratingrating by: Rob Bantly04/12/2014

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Very easy instalation. Good Quality. The vidio also made it very easy.124785



- 47515

ratingratingratingratingrating by: Jessica l04/01/2014

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Great 123203



- 47515

ratingratingratingratingrating by: Curtis P03/31/2014

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Easy to install and works as advertised. 122901



- 47515

ratingratingratingratingrating by: David01/21/2014

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Perfect 114426



- 47515

ratingratingratingratingrating by: Jeff K12/23/2013

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Exactly as advertised. Installation was simple. Works perfectly.110889



- 47515

ratingratingratingratingrating by: TD11/18/2013

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quick service, worked great. 107685



- 47515

ratingratingratingratingrating by: Jim N08/16/2013

Is this review helpful?


On time and as advertised. 95417



- 47515

ratingratingratingratingrating by: Jim T07/03/2013

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



- 47515

ratingratingratingratingrating by: Jon B.07/03/2013

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Very easy installation. Perfect solution for boat trailers.87399



- 47515

ratingratingratingratingrating by: Al06/28/2013

Is this review helpful?


I've used these adapters before. they work good.86640



- 47515

ratingratingratingratingrating by: Tony S.06/12/2013

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This was very easy to add to the existing trailer wiring. Very good quality product.84276



- 47515

ratingratingratingratingrating by: Brad S.06/11/2013

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Exactly what I was looking for my boat trailer. Thank You!84133



- 47515

ratingratingratingratingrating by: Wayne B05/07/2013

Is this review helpful?


The trailer hitch bolted in place easily. Instructions were ideal. Firing kit and additional five flat adapter Were easy as well. 79238



- 47515

ratingratingratingratingrating by: Tim P.04/27/2013

Is this review helpful?


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

ratingratingratingratingrating by: Monty S02/28/2013

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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

ratingratingratingratingrating by: Jeffrey02/22/2013

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Great price, quick service and delivery. Exceeded my expectations.67360



- 47515

ratingratingratingratingrating by: Steve02/18/2013

Is this review helpful?


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


Comments

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

comment by: Steve - 2/18/2014


2856



- 47515

ratingratingratingratingrating by: Michael01/21/2013

Is this review helpful?


Product arrived in a very timely manner, thank you.63759



- 47515

ratingratingratingratingrating by: Patrick01/20/2013

Is this review helpful?


Works fine. I'm not concerned with the reverse light so I didn't even hook up the blue wire, working great as a plug and play adapter.63582



- 47515

ratingratingratingratingrating by: 4751509/25/2012

Is this review helpful?


Excellent. Easy to install instructons. Fixed my problem easily.55739



- 47515

ratingratingratingratingrating by: Dan E.04/18/2012

Is this review helpful?


Needed a reverse light. Simple installation. Works great. Wish it came with a rubber cover to keep the muck out...37638



- 47515

ratingratingratingratingrating by: Greg L04/04/2012

Is this review helpful?


Awesome service. The order, delivery, and confirmation process is outstanding...and priced very well. 36140



- 47515

ratingratingratingratingrating by: Kevin03/04/2012

Is this review helpful?


Fit perfect. 33105



Ask the Experts about this Hopkins Wiring
Expert Answers about Adapter 4 Pole to 5 Pole Trailer Wiring Adapter - Shorter - 47515                                             Do you have a question about this Wiring?


  • Wiring 4 to 5-Pole Trailer Connector Adapter onto 2005 Jeep Grand Cherokee
  • The blue wire on the 4-Pole to 5-Pole Trailer Connector Adapter would need to be lengthened and tapped into the circuit that feeds the reverse lights on your Grand Cherokee. Simply locate the reverse lamp assembly, and find the wire feeding the bulb. This is where you would tap in the blue wire. You can use a Scotchlok connector, like part # 804C. To view an install video, click on the provided link.The video shows the adapter being installed on a different vehicle, but the video will give yo
    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 circ
    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...

  • 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 = left
    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 tha
    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 # 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 correc
    view full answer...

  • 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 determin
    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 in goo
    view full answer...

  • 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 box l
    view full answer...

  • 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 circuit
    view full answer...

  • Adding Trailer Wiring to a Motorcycle to Tow a Trailer
  • Motorcycles have separate brake lights and turn signals. Most trailers, unless designed for use with a motorcycle, have combined turn signals and brake lights. You will need to convert the separate signals on the bike to match what the trailer requires. To do this you will need a converter like # 119178. On this harness you will connect the white to ground, green to the left turn signal, yellow to the right turn signal, and red to the brake lights. Brown is the running lights. If it is combin
    view full answer...

  • Where to Find the Reverse Light Wire at the Back of a 2013 Ford Escape
  • On the 2013 Ford Escape, the color wire for the reverse lights could be any color. There is no set color it is supposed to be and when on the assembly line they can use any wire color should they run out of the color they would typically use. Testing the wires to find the right one is the only way to know for sure if you have the correct wire. 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 t
    view full answer...

  • Setting Up Australian-Market 2010 Hyundai Santa Fe to Tow Trailer With Electric Brakes
  • In the US market, Hyundai does not pre-wire the Santa Fe for electric trailer brakes. From my research online, I found that an Australian 7-way flat trailer connector does use the blue wire in the # 5 position to carry trailer brake output voltage. To actuate your brakes, you would need to install a brake controller. Your vehicle might be pre-wired, you would need to check with a local Hyundai dealer about that, there might be an adapter harness available that would make installation very si
    view full answer...


Info for this part was:


Expert Research:
Michael L

Expert Research:
Robert G

Expert Research:
Patrick B

Expert Research:
Michael H

Video Edited:
Joshua S

Expert Research:
John H

Photos by:
Sam P

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