Quickly and easily convert a 7-pole, RV-style connector to a 4-way, flat connector with this RV connector adapter. Adapter has a non-corrosive nylon shell. Lowest Prices for the best Wiring from Pollak. Pollak 7 Pole to 4 Way Connector Adapter part number PK12716 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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Wiring > Wiring Adapters > Single-Function Adapter > 7 Blade > 4 Flat > Plug Only > Pollak

Pollak 7 Pole to 4 Way Connector Adapter

Pollak Wiring

(227 reviews)

Code:   PK12716


Shipping Special

Shipping Weight: 0.17 pounds


Pollak Wiring - PK12716

Quickly and easily convert a 7-pole, RV-style connector to a 4-way, flat connector with this RV connector adapter. Adapter has a non-corrosive nylon shell.


  • 7-Pole RV connector to 4-way flat adapter
    • Promotes quick and easy conversion of 7-pole, RV-style connector to 4-way flat connector
    • Allows 1 vehicle to tow either campers or boat trailers without electrical brakes
    • Connects Ground, Left Turn, Right Turn and Stop circuits
  • Tethered cap for protection from sand, dirt and moisture
  • Non-corrosive nylon shell and insert


  • Application: Vehicles with 7-pole connectors
  • 1-Year limited warranty

This adapter will make the two trailer connectors pictured below work together.

7-Way socket
7-Pole Connector Socket on vehicle
4-Pole plug
4-Way connector on trailer

12-716 Pollak 7-Way to 4-Way Connector Adapter
Replaces 37358

Video of Pollak 7 Pole to 4 Way Connector Adapter

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

Video Transcript for Pollak Wiring PK12716 Review

Today we're going to be reviewing part number PK12716. This is the Pollak 7-Pole to 4-Pole Connector Adapter. This adapter is going to promote quick and easy conversion of your 7-pole plug to a 4-pole flat connector. You can see here that this is going to connect to the 7-pole adapter. This only got 4 pins so it's just going to send through the functions of the 4-way flat that it needs to. Then on this side, you're going to be able to undo the dust cap.

It's going to expose your 4-way flat and then you can connect your 4-way flat connector to this connection here and then have full access to the connection in the towing application that you need. It's going to allow one vehicle to tow, either campers or boat trailers, without electrical brakes. This is going to connect the ground, left turn, right turn and stop circuits. Again, it's got that nice tethered cap for protection from sand, dirt and moisture. It's all about protecting those connection point. That cap is attached to the socket, that way you don't have to worry about misplacing it or losing it. This unit is made from a non-corrosive nylon shell and insert.

It's going to be highly resistant to rust and corrosion, providing many years of use. It is small enough, that way you can leave it connected if you're just . For short term reasons or you can fully disconnect it, put this in the glove box or the center console in your vehicle or a storage compartment of your RV. You always have it handy, ready to be pulled out and use it anytime. When it comes to the application, this is designed to be used with vehicles with 7-pole connectors. Real quick, I just want to go over few of the measurements of you.

The overall length of the unit measuring from end to end is going to be about 3-3/4 of an inch and the other measurement is basically self explanatory. It is designed to fit into the 7-way connector. I just want to give you an idea of how much length you're going to have sticking out once it is connected. It's got the nice little key lock up here, that way you can make sure that it slides into the appropriate groove on the 7-way socket. Just line that up, center at the 12 o'clock position, push it in until it snaps into place and then that lid is going to snap over the end here, which is going to hold the connector firmly in place, making sure that nothing comes in between the connection points on the socket and the connector. It's got the nice pull tabs right here. That way you can get easy grip on it and easily disconnect the unit from the connection.

That's going to do it for today's review of part number PK12716. This is the Pollak 7-Pole to 4-Pole Connector Adapter. .

Customer Reviews

Pollak 7 Pole to 4 Way Connector Adapter - PK12716

Average Customer Rating:  4.9 out of 5 stars   (227 Customer Reviews)

Quickly and easily convert a 7-pole, RV-style connector to a 4-way, flat connector with this RV connector adapter. Adapter has a non-corrosive nylon shell.

- PK12716

by: Walt R07/23/2013

The adapter works GREAT and the shipping was very fast! Thank you!!!! 91061


Worked great thank you!

Walt R - 01/21/2015


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by: Michael K05/01/2013

I put the kit in this morning. It probably took 15-20 minutes plus the time it took to drill the hole for the receptacle itself. I have two comments. 1. I had put the module in the place directed and then realized that I had two fuse plugs in the box, so I took it back out and put those in. 2. It is quite difficult to get the "cap" off the wiring under the rear bumper. I probably struggled with that more than any other single thing. After completing the job, I plugged the 7 to 4 wire converter in and hooked it to one of my trailers and everything worked the way it was supposed to. Honda is really ripping people off with what they are doing. Please see my previous email to you. Thanks for your great product, You can bet that I'll be sending business your way, 78548

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by: David C08/26/2013

Great product.... able to plug in your 4wire plug from trailer to your 7wire plug on your vehicle. 97107


still on the vehicle and has been used all year. working out GREAT!!!

David C - 08/26/2014


- PK12716

by: Gary C.03/17/2014

Product is exactly what I needed. Thank you. 120921


Patrick - thanks for reaching out. Everything is working just fine. No problems or concerns.

Gary C - 03/23/2015


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by: Rick O09/18/2013

Just what I wanted works great 100507


It worked out great I keep it in the glove box untill I need it

Rick O - 09/18/2014


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by: rosie11/09/2012

worked as advertised 59146


The product still works great and looks like a factory installed device

rosie - 05/10/2014


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by: James H.07/04/2013

I required this adapter to convert the factory 7 pole harness on my VW Tiguan to match the 4 pole connector on my trailer. I was especially drawn to this adapter given that the vehicle harness has the Pollak name brand printed on it. The adapter "feels" like it is made well and the fit is confidence inspiring. I was quite pleased when I finished connecting my trailer through this adapter and everything worked perfectly on the first use of it. I have now towed three times (reconnecting and disconnecting after each use) and have absolutely no complaints. 87747

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by: Anthony F03/01/2013

Fits perfectly, and it works. 68298


Still working great.

Anthony F - 08/30/2014


- PK12716

by: Jim S.04/27/2012

Purchased this for my 2010 Toyota Tacoma truck with factory towing package. Needed adapter from the RV style plug to the standard trailer 4 prong plug. eTrailer experience excellent. Plug seems to fit loose into the socket on truck but really isn't. The socket cover comes down and there is a tab on the adapter that fits into a space on the cover, preventing the adapter from coming out of the socket. Nice! 38560

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by: Jimmie03/04/2013

Every item that was purchased was installed within 15 minutes with ease no PROBLEMS at all LOOKS ausume on the truck and adds value also I will buy from etrailer again price was right and super fast shipping. Thanks again etrailer 68730

- PK12716

by: Jon M12/27/2010

7 wire to 4 wire adapter I tried using a cheaper, trailer rental outlet adapter but the fit was terrible. This is solid and worth every penny if you need an adapter. Website made it easy to find and service was solid as well. I will be back for more. I also like the wiring tips and videos. Thanks a lot! 4674

- PK12716

by: Garry S.03/19/2015

The product works great but more important was the service at etrailer. I was about to order the wrong part until your service advisor asked me a few questions and guided me to the correct part. I will use etrailer in the future for parts and have already recommended to friends, 179831

- PK12716

by: Laura04/20/2015

My son ordered this for an old boat trailer he's been reviving. He had picked one up at a local auto store that didn't work. We were thrilled when this one arrived a day ahead of schedule. Plugged it in and headed straight to the lake for his revamped boats' maiden voyage ! 186557

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by: Brent04/29/2014

This part worked perfectly to convert a 7-pole to 4-pole light adapter for my new Nissan Pathfinder. The dealer was going to charge over $100 and this was all I needed since I have surge brakes on my trailer. If you have electric trailer brakes, this is not what you need. 127981

- PK12716

by: Randy D.10/08/2013

Shipped fast and arrived on schedule. I plugged the unit into the factory seven pole outlet on my truck and connected the four pole tailer connector and everything worked the first time. Hard to argue with success. I would recommend this product and etrailer as a company. 103066

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by: Don B06/25/2014

My plug was shipped the same day I ordered it and was received on the day they said I would get it. Plug is very good quality and I'm pleased with my purchase. I had bought a trailer wiring harness at the same time and was very pleased with that also. 137606

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by: Dave06/09/2012

I have not hooked the trailer to it yet but my test light shows all the connections are good. Much better than the previous plug I had. Just make sure you push it far enough for the retention tab on tje cover of your main plug to keep it in place 43435

- PK12716

by: David S.07/09/2013

I needed the Pollak 7 Pole to 4 Pole connector adapter to connect my Thule 684 Terrapin cargo box to my 2012 MB GL 450. I hooked it up last night and the adapter works perfectly. All lighting functions on the Thule are working as designed. 88500

- PK12716

by: Joe P.05/10/2011

I recently purchased a new GMC truck and it had a factory installed towing system. It had a Pollak 7 pole socket installed at the factory. I needed an adapter so I ordered this one. It is the exact perfect adapter I needed to do the job. 13141

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by: Bill P.08/24/2015

Item works as described. Just plug and go. Quick release. Very convenient. I have an 8 ft. utility trailer, and a 22 ft. boat that I trailer. Both have 4-way flat plugs. No rewiring necessary. A very good design indeed. 221477

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by: John A06/07/2012

Great service. You are missing incredible customer service if you do not purchase from these people. This comes in a time when there is not customer servicer anymore. These people actually care. Wow, Thanks etrailer. 43215

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by: Vic M.03/10/2011

Perfect - fit just like you said. I am not so mechanically savey but your descriptions of "if you have this, you can use this" made it so simple, and shipping was super fast. Dealt with before and will deal with again! 9007

- PK12716

by: Jeffo05/17/2012

Purchased two new trucks that came prewired for RV plugs and the ole trailer had a 4 pin flat plug. This worked like a charm and saved me alot of time having to rewire the trailer with an RV plug. Well worth the money. 40831

- PK12716

by: Stan G.12/13/2013

Ordering was simple and delivery was on time. Haven't use the product yet but it'seems to be what I needed to convert my Honda Pilot's 7 pole plug to use a 4 pole plug from a trailer. Will follow-up when I use it. 110097

- PK12716

by: BILLYGOAT07/07/2011


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by: Jim Daugherty06/20/2011

I needed an adaptor for my truck to tow my jetski. I found these at etrailer.com. Nice price. Easy transaction. Superfast Shipping also at a reasonable price. I would buy from you again. Thank you. Jim 17355

- PK12716

by: David04/22/2014

A high quality device at a reasonable price. My problem was understanding which type of adapter to purchase. The web site does not help much. The wiring diagram I received after the sale was fantastic. 126377

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by: Dj06/04/2013

This adapter is exactly what I needed. I explain my problem to sales rep Alicia G and she knows what I needed. I plug it in to my 7 pin harness and than my 4 pin boat trailer. And guess what? It works!!! 83218

- PK12716

by: Michael Brad03/12/2013

Received my trailer converter in the most prompt manner. This is the second one I ordered since I screwed up the first time. Works like a champ and the price is extremely affordable. Thanks. 70222

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by: Bill B.04/14/2015

Just exactly what I needed for conversion from 4 plug trailer light hook up to to my colorado 7 plug, saved a lot of time by finding E trailer's site first. great service, fast delivery. 185024

- PK12716

by: Julie03/20/2015

Thank you for all your help in getting my order together and out so quickly. The Teconsha P3 controller and pole connector are beautiful. You guys are the best. Thanks again, Henry 179975

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by: Greg01/21/2013

Great easy, arrived in good time..(shipping). application was easy and shows a clean look, I'm happy at this time, haven't tried it yet but will..Keep up the good work ..and thanks.. 63710

- PK12716

by: Randy S05/03/2011

Plugs right into the 7 pin plug and has place on back to adapt to the 4 wire flat. Simple and straightforward without the corrosion prone adapters I've worked with in the past. 12752

- PK12716

by: WG2106/16/2015

Only place I could call and speak to someone that could actually receive dimensions and transfer them to part numbers that worked great. Katy W. was the best. Thanks so much! 203842

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by: Fredy04/02/2015

Perfect match for Twist-in, 7-Pole, RV-Style Trailer Connector for Nissan Titan. I'm satisfied it, so far I haven't had any light out on the trailer due to connection. Thanks 182440

- PK12716

by: Gary P.02/24/2014

This thing does exactly what it's supposed to do; simply and easily, and at a great price. Easy connection and high quality make it a product that should work well for years. 117513

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by: Tom K06/24/2015

Just what I was looking for. Heavy duty construction, should last a long time. It fit my existing truck connector and the electrical connections were snug with no problems. 206784

- PK12716

by: Tom K06/24/2015

Just what I was looking for. Heavy duty construction, should last a long time. It fit my existing truck connector and the electrical connections were snug with no problems. 206783

- PK12716

by: Dave03/01/2012

Once again eTrailer has come through with flying colors....fast delivery and exceptional products! If you are doing business elsewhere, you are doing yourself an injustice! 32861

- PK12716

by: Terry01/22/2015

I have a 2013 Chevrolet Silverado and needed a plug to go from my pickup to my 4 pin plug on my car trailer. This one did the job perfect! Thanks guys Fast Shipping 170761

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by: William J.01/07/2014

As soon as the parts were delivered on time I open the box and had them in place on my truck in like, 5 minutes. it was exacly the port I needed to order THANKS! 112208

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by: Brian P04/30/2015

Simple product, works as advertised. I got great help when I called eTrailer to identify what I needed, and it arrived quickly. The price was right as well! 188867

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by: Mark P06/02/2015

Have not used the product yet (except to check fitment on my truck) but the quality seems to be excellent and the service/shipment was faster than expected! 199926

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by: Barry S.01/04/2011

7-WAY to 4-WAY Trailer Plug Great! Was received in sealed packaging; high quality, perfect fit... will be used to connect trailer lights for my bass boat. 4997

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by: john f06/17/2015

item worked perfect and was as stated on website. Item shipped the next day and I had it on the third day counting the day I ordered it. Fantastic!!!! 204148

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by: Rob C.10/02/2013

Works great. Great Price. Needed to replace the broken terminal on factory installed Dodge towing kit and this was the easiest and economical way. 102261

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by: Steve01/05/2015

Fits my factory installed receiver. Have not tried it with the trailer yet. I don't expect any problems as the contacts are all intact and clean. 167805

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by: Paul B.05/04/2011

The Connector adapter worked perfectly. It even has a cover for the exposed connectors so that they don't get dirty and corroded when not in use. 12863

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by: Ken Davis07/01/2015

It's just what I was looking for at a very good price. The delivery was very quick. I am pleased with this sight and have order more items. 208643

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by: David T.02/03/2015

Used this to connect a rental trailer with a 4 pin plug. Worked well. All lights connected and working as expected. Well constructed. 172286

Show More Reviews

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

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  • There are a few different options that you have to install a 4-way or a 7-way trailer connector on your 2012 Honda Pilot. Option 1 would be to install the Tow Ready 7-Way Wiring Harness, # 118265, that you referenced and use a 7-way to 4-way adapter like part # PK12716 so you can connect to the 4-way connector from your trailer. The only downside to this set up is adding a brake controller. Since your vehicle did not come with a factory tow package, it probably does not have a brake...
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  • The Adapter 7 Pole to 4 Pole with Tester and Cover, # 47345, will fit your 2004 GMC Envoy SLT, as long as the factory plug is a 7-Way, blade type (and it more than likely is). We also have the Pollak 7 Pole to 4 Pole Connector Adapter, # PK12716. Another option is the Adapter 7 Pole to 4 Pole with LED Nite-Glow (TM), # 37335 (kind of neat as it lights up with the taillights). There are several more. I have included a link below that will take you to them.
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  • Do Magnetic Towing Lights Require a 7-way RV Plug?
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  • What is the Difference Between Hopkins # HM47365 and Pollak # PK12716 Wiring Adapters
  • Both the Hopkins # HM47365 and Pollak # PK12716 wiring adapters allow a tow vehicle with a 7-way blade-style trailer socket to connect to a trailer that is equipped with a 4-pole flat connector. Both plug in to the socket on the vehicle and provide a receptacle for a 4-pole flat trailer connector. The difference between them is that the Pollak adapter is a single piece while the Hopkins adapter uses two separate sections linked by a short length of wiring. In some applications these...
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  • Trailer Taillights Not Working on a 1998 Chevy Tahoe Everything Else Works Except Running Lights
  • It sounds like the tow package running light fuse is blown. There is a power distribution panel under the hood. When you remove the cover there will be a legend on the underside indication where the tow package fuses are located. The running light fuse for this circuit should be located in this panel also. If a tow package fuse is blown check the trailer wiring for a short on the taillight circuit before reconnecting it to the vehicle. If you find that the fuses are good, the next...
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  • Trailer Wiring Adapters to Convert 7-Way Vehicle Connector on 2014 Honda Pilot to 4-Pole Flat
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  • Converting 7-Way on Motorhome to Roadmaster Diode Kit 4-Pole on Flat Towed 2012 Ford F150
  • To convert the 7-way on your motorhome to work with the 4-pole plug of the Roadmaster Diode Kit you referenced, you have a couple of options. You could use an adapter like # PK12716 that would plug into the 7-way on your motorhome. You could then plug the umbilical from the towed vehicle into the adapter. This would be a good option if you were not planning on towing frequently. Another option would be to remove the 4-pole flat connector on the truck, and replace it with a 4-pin...
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  • Will Hopkins Adapter 7-Way Round Pin To 4-Way Flat # 47405 Fit a 2001 Land Rover Discovery II
  • The trailer wiring adapters are not vehicle specific. They are universal and will be matched by what type of connector is on the tow vehicle and what type of connector is on the trailer. The Hopkins Adapter 7-Way Round Pin To 4-Way Flat, part # 47405, is for a vehicle that has a 7-Way round pin connector and you are connecting to a trailer with a 4-Way flat connector. The 7-Way blade style connectors are more common than the 7-Way round pin connectors. I would check the 7-Way connector...
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  • Parts Needed to Flat-Tow My 1991 Honda Civic
  • Yes, you can use a Tow Ready Adjustable Tow Bar, 5,000 lbs, part # 63180, to tow your 1991 Honda Civic. Just keep in mind that this tow bar is rated for towing speeds of 45 miles per hour or less. A better tow bar option would be the RoadMaster Tracker Tow Bar, # RM-020, which is designed for towing long distances and more frequently. With this tow bar you will need a set of Quick Disconnects, # RM-201, to easily connect and disconnect the tow bar from the base plates. You will also...
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  • Adapting a 7-Way to a 4-Way On a 2012 Honda Pilot for Rola Enclosed Cargo Carrier # 59110
  • All you will need is a simple 7-Way to 4-Way adapter like # PK12716. This adapter plugs into a 7-Way and the other end has a 4-Way flat that you will connect the Rola enclosed cargo carrier, # 59110, into. We also have the same carrier in a swing away version to allow you complete access to the rear hatch and cargo area. It is # 59109. I have included links to video reviews of both carriers for you.
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  • Raising Rola Trailer Hitch Mount Cargo Carrier 59052 Up a Few Inches on a 2010 Nissan Xterra
  • The Rola trailer hitch mount cargo carrier, # 59502, has a rise in the shank already that raises the platform up 2 inches. The Nissan Xterra is a tall enough vehicle to where you most likely would not need any additional rise. But if you did you would need to use something like # MT70066 to raise it up a few more inches. The lighting kit for this carrier # 20174 has a 4-Way flat connector. If your Xterra only has a 7-Way, you will need an adapter like # PK12716 and it will work great....
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  • Installing the 4-Pole Trailer Adapter # 118384 on a 2010 Chevy Avalanche
  • The 4-Pole Trailer Adapter for GM trucks with Factory 7 Way, # 118384, is meant to plug in line with the factory wiring and provide a 4-Way flat connection. The 4-Way will provide left and right turn signal functions, brake light functions, and running light functions. The reverse light circuit will not be used or needed. I have included a link to the installation details below. If your 2010 Chevy Avalanche does not have a factory connector, you can add a 7-Way by using Twist-in, 7-Pole,...
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  • Availability of a Trailer Wiring Harness for a 2010 Honda Pilot
  • The Honda Pilot Replacement OEM Tow Package Wiring (7-Way) w/ Circuit Protected ModuLite HD Module, item # 118253, will plug into the vehicles factory connection under the rear bumper. The harness comes complete with a modulite taillight converter that needs to be installed in the vehicles rear cargo area storage compartment and fuses and relays that will need to be installed in the cargo area fuse panel and the under hood fuse panel. The 7-Way connector will not install in the knockout...
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Do you have a question about this Wiring?

Info for this part was:

Installed by:
Joe V

Photos by:
Theodore B

Expert Research:
Michael L

Expert Research:
Sarah L

Video Edited:
Andrew K

Written by:
Tyler C

Expert Research:
Patrick B

Expert Research:
Michael H

Expert Research:
Jeff D

Expert Research:
Reno H

Expert Research:
Jameson C

Test Fit:
Nicholas E

Expert Research:
John H

Photos by:
Amber A

Video by:
Alan C

Updated by:
Sarah W

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