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Wiring > Wiring Adapters > Single Function Adapter > 7 Blade > 4 Flat > Plug Only > Pollak

Pollak 7 Pole to 4 Pole Connector Adapter

Pollak Wiring

Rating: ratingratingratingratingrating
97 reviews


Code:   PK12716

Price:$8.99

Shipping Weight: 0.5 pounds

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Pollak Wiring - PK12716

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

Features:

  • 7-Pole to 4-pole RV connector adapter
    • Promotes quick and easy conversion of 7-pole, RV-style connector to 4-pole 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


Specs:

  • 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 Pole Connector Adapter


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

Video Review Pollak 7 to 4 way adapter
Pollak 7 Pole to 4 Pole Connector Adapter Review

Video Transcript for Pollak 7 Pole to 4 Pole Connector Adapter Review

Today we are going to show you the Pollak 7-pole to 4-pole connector adapter, part number PK12716. Pollak offers this adapter that makes converting your 7-pole on your vehicle to a 4-pole on your trailer quick and easy. We are going to open the door on our 7-way and our adapter. Push it all the way in and make sure it is seated firmly. Then pull the cap off the end of the 4-way. Now we are ready to hook up the 4-way connector on our trailer. :28

Now we are ready to test our tail light functions. We are going to check for running lights, brake lights, and blinkers. That does it for the Pollak 7-pole to 4-pole connector adapter, part number PK12716.


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Customer Reviews

Pollak 7 Pole to 4 Pole Connector Adapter - PK12716

Average Customer Rating:  ratingratingratingratingrating4.9 out of 5 stars   (97 Customer Reviews)




- PK12716

ratingratingratingratingrating by: Barry S.01/04/2011

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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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- PK12716

ratingratingratingratingrating by: Rick McWhorter06/29/2011

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just replaced my old pollak plug with a new one, it works great, & shipping was super fast. Will save this site in my favorites18188

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- PK12716

ratingratingratingratingrating by: Dan B06/21/2011

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super fast delivery 17619

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- PK12716

ratingratingratingratingrating by: Jim Daugherty06/20/2011

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I needed an adaptor for my truck to tow my jetski. I found these at e-trailer.com. Nice price. Easy transaction. Superfast Shipping also at a reasonable price. I would buy from you again. Thank you. Jim17355

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- PK12716

ratingratingratingratingrating by: Herman Karl06/20/2011

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Shipment was very fast. Product works well.17327

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- PK12716

ratingratingratingratingrating by: Glynn R.06/12/2011

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Seemed to take quite a while to receive this item, other than that all aspects were outstanding.16775

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- PK12716

ratingratingratingratingrating by: Brian K.05/27/2011

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Great product and quick delivery. 15521

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- PK12716

ratingratingratingratingrating by: Brad C.05/24/2011

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Just the adapter I needed. Thanks, eTra iler!15250

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- PK12716

ratingratingratingratingrating by: Bill C05/20/2011

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Good product for a great price. The service is phenominal as well. Can't go wrong with E-trailer for your trailering needs,14904

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- PK12716

ratingratingratingratingrating by: Wolfgang Kistler05/19/2011

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This is the second time I ordered something from etrailer and I as allways they do a great job.14784

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- PK12716

ratingratingratingratingrating by: Dave05/17/2011

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Great price! 14503

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- PK12716

ratingratingratingratingrating by: brian05/16/2011

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Great product, great price, fast shippi ng14415

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- PK12716

ratingratingratingratingrating by: Dan R05/16/2011

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Another great product purchaced from this company very pleased 14233

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- PK12716

ratingratingratingratingrating by: Ron B05/16/2011

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Works great. 14140

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- PK12716

ratingratingratingratingrating by: Rodney Gisclair05/12/2011

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Great Product. easy to install. instructions and "how to" video were excellent. ++++++ 13660

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- PK12716

ratingratingratingratingrating by: Eric M.05/12/2011

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Perfect Product. Works great!!! 13658

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- PK12716

ratingratingratingratingrating by: Bill Buehrle05/11/2011

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I was very pleased with the service and product. I have not used it yet but it appears that it will do what I need it to do13585

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- PK12716

ratingratingratingratingrating by: Tom W05/11/2011

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Work great.fast delivery 13378

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- PK12716

ratingratingratingratingrating by: Joe P.05/10/2011

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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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- PK12716

ratingratingratingratingrating by: Potatopirate05/07/2011

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Works great. 13057

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- PK12716

ratingratingratingratingrating by: Paul B.05/04/2011

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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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- PK12716

ratingratingratingratingrating by: Jim B05/03/2011

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Well made piece, fits great. 12778

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- PK12716

ratingratingratingratingrating by: Randy S05/03/2011

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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

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- PK12716

ratingratingratingratingrating by: Bill K.05/03/2011

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Good price quick shipping. 2nd purchase both went without a hitch (no pun intended)12728

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- PK12716

ratingratingratingratingrating by: Scott S03/19/2011

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The items works great, I have 3 vehicles and 2 trailers I tow and no problems with any of them.9861

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- PK12716

ratingratingratingratingrating by: Gary S.03/16/2011

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Very good quality product, quick service and delivery.9493

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- PK12716

ratingratingratingratingrating by: Vic M.03/10/2011

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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

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- PK12716

ratingratingratingratingrating by: Jim F02/21/2011

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Plugs Quick and easy 7593

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- PK12716

ratingratingratingratingrating by: Mike W.02/03/2011

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This product was as I expected. 6619

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- PK12716

ratingratingratingratingrating by: Rcl01/15/2011

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:) Does what it says. Fits good. 5526

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- PK12716

ratingratingratingratingrating by: Jon M12/27/2010

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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

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- PK12716

ratingratingratingratingrating by: Jonathan01/26/2012

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Fast Shipping, everything work as advertising. Excellent service.30395

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- PK12716

ratingratingratingratingrating by: Larry H.01/15/2012

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It makes changing to different trailers easy.29749

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- PK12716

ratingratingratingratingrating by: Kim J12/27/2011

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Plain and simple, it's a solid item. 28775

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- PK12716

ratingratingratingratingrating by: cayeagley11/20/2011

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plug it in and go. 27187

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- PK12716

ratingratingratingratingrating by: mike k.11/04/2011

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works good 26541

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- PK12716

ratingratingratingratingrating by: Jack R.08/17/2011

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Makes it easy to hook up the trailer(s) to my vehicle(s).22050

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- PK12716

ratingratingratingratingrating by: x08/12/2011

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excellent service, great price! 21767

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- PK12716

ratingratingratingratingrating by: Jody08/04/2011

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Worked great, good price 21105

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- PK12716

ratingratingratingratingrating by: Johnnie07/28/2011

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Very easy to convert to other trailer. Works great. 20500

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- PK12716

ratingratingratingratingrating by: BILLYGOAT07/07/2011

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I HAD A PROBLEM FINDING A WEBSITE WITH INFORMATION TO HELP ME ORDER THE CORRECT ADAPTER. YOUR'S WAS THE FIRST. THE SITE WAS EASY TO USE AND I RECEIVED THE PRODUCT IN TWO OR THREE DAYS NOT SIX OR SEVEN. THANK YOU. 18769

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- PK12716

ratingratingratingratingrating by: P D B07/06/2011

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Easy to install. Prompt attention to order, fast shipping.18640

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- PK12716

ratingratingratingratingrating by: Brian h06/30/2011

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Faster than I thought would arrive excellent service and selection18269

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- PK12716

ratingratingratingratingrating by: Charlie06/14/2013

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Works great. Good.quality. 84707

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- PK12716

ratingratingratingratingrating by: Dj06/04/2013

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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

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- PK12716

ratingratingratingratingrating by: B Kirby05/17/2013

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just what i needed,fast shipping 80684

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- PK12716

ratingratingratingratingrating by: Don C.05/14/2013

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Stays in place well and a no-brainer hook up!80130

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- PK12716

ratingratingratingratingrating by: Mike M05/04/2013

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Rubber cap is a nice feature not found on other adapters78974

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- PK12716

ratingratingratingratingrating by: Michael K05/01/2013

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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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- PK12716

ratingratingratingratingrating by: Angel Z.04/30/2013

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Good connector and built solid 78473

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- PK12716

ratingratingratingratingrating by: Al F.04/28/2013

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Love this makes it very easy , got rid of my homemade pigtail !!!78210

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- PK12716

ratingratingratingratingrating by: Marty04/13/2013

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Gothere in a hurry , works great. 75870

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- PK12716

ratingratingratingratingrating by: John04/05/2013

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Fast shipping, very easy to hook up. 74491

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- PK12716

ratingratingratingratingrating by: Robert03/25/2013

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Product arrived before the scheduled delivery date and it worked right away. I would definately recommend the product!!! Two thumbs up.72448

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- PK12716

ratingratingratingratingrating by: David03/18/2013

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Adapter plugs in my 2011 Canyon then 4 wire plug from my trailer 71488

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- PK12716

ratingratingratingratingrating by: Michael Brad03/12/2013

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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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- PK12716

ratingratingratingratingrating by: Keith03/05/2013

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Fits well as necessary. The twist in connector fit perfectly in the factory twist in location.69019

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- PK12716

ratingratingratingratingrating by: Jimmie03/04/2013

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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 etrailer68730

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- PK12716

ratingratingratingratingrating by: Anthony F03/01/2013

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Fits perfectly, and it works. 68298

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- PK12716

ratingratingratingratingrating by: Robert02/25/2013

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Precisely what I needed. I also appreciate the faster than expected service. Many thanks! BG67714

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- PK12716

ratingratingratingratingrating by: James02/11/2013

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Excellent product. Works perfectly. Very happy with purchase.65664

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- PK12716

ratingratingratingratingrating by: Ognjen02/11/2013

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great product, easy to install 65628

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- PK12716

ratingratingratingratingrating by: Gary02/05/2013

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as advertised, excellent service 65091

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- PK12716

ratingratingratingratingrating by: Greg01/21/2013

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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

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- PK12716

ratingratingratingratingrating by: Steve W.11/27/2012

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Great price,Great quality. Just plug it in.........60067

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- PK12716

ratingratingratingratingrating by: samm.11/13/2012

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Product works great and all anyone has to do is plug it in.59398

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- PK12716

ratingratingratingratingrating by: Ron11/13/2012

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Fast delivery , would buy again. 59335

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- PK12716

ratingratingratingratingrating by: rosie11/09/2012

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worked as advertised 59146

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- PK12716

ratingratingratingratingrating by: CT11/09/2012

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work great 59099

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- PK12716

ratingratingratingratingrating by: rc10/05/2012

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excellent product, and excellent customer service.56316

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- PK12716

ratingratingratingratingrating by: TB09/25/2012

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Great product, works just like it is supposed to.55705

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- PK12716

ratingratingratingratingrating by: Robert H.09/13/2012

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workie workie 54627

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- PK12716

ratingratingratingratingrating by: Robert DeGoey08/27/2012

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Needed to convert stock 7 pin to 4 pin flat. Works well and is good quality. 53205

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- PK12716

ratingratingratingratingrating by: EJR08/17/2012

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Great and worked as described. 52034

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- PK12716

ratingratingratingratingrating by: Chuck08/17/2012

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Good to have just in case u got to move a small trailer and only have a 7 way plug just plug and go!52014

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- PK12716

ratingratingratingratingrating by: Eric Horn08/14/2012

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My new silverado has no 4 way flat connection on the real and this is a cheap way to go from my 7 way to a 4 way to pull my boat51694

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- PK12716

ratingratingratingratingrating by: Sam M.08/08/2012

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Works great. 51056

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- PK12716

ratingratingratingratingrating by: Steve08/07/2012

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It works. Looks clean and well made. 50903

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- PK12716

ratingratingratingratingrating by: Ron08/03/2012

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Works great bought it for my 2012Chevy Silverado50357

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- PK12716

ratingratingratingratingrating by: A L07/23/2012

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sturdy construction, does exactly what it claims too, nice piece to have48948

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- PK12716

ratingratingratingratingrating by: Jeriatric07/11/2012

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Exactly what I needed to my older boat trailers to my Jeep's O.E.M. trailer hitch.47573

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- PK12716

ratingratingratingratingrating by: Michael J07/03/2012

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Great high quality product and great pr ice.46604

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- PK12716

ratingratingratingratingrating by: Roy B.06/27/2012

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Received items as advertised, good communication. Will do buisiness again.45848

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- PK12716

ratingratingratingratingrating by: Robert Sch06/18/2012

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If you can't figure this one out, you should not be driving.44693

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- PK12716

ratingratingratingratingrating by: Dave06/09/2012

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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 place43435

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- PK12716

ratingratingratingratingrating by: John A06/07/2012

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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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- PK12716

ratingratingratingratingrating by: Jeffo05/17/2012

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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

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- PK12716

ratingratingratingratingrating by: Joshua05/14/2012

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This adapter works as expected. 40488

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- PK12716

ratingratingratingratingrating by: Scott D.05/06/2012

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Great price and works well. 39586

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- PK12716

ratingratingratingratingrating by: Vickie S04/30/2012

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It looks like what it should ,it will be awhile before it is actually used.38842

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- PK12716

ratingratingratingratingrating by: Jim S.04/27/2012

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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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- PK12716

ratingratingratingratingrating by: beemann04/14/2012

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This little deal saves me alot of rewiring glad someone had the sense to build it37169

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- PK12716

ratingratingratingratingrating by: David S.04/10/2012

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This was a great investment. 36761

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- PK12716

ratingratingratingratingrating by: SK03/10/2012

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Quick ship-great product. 33508

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- PK12716

ratingratingratingratingrating by: Dave03/01/2012

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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

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- PK12716

ratingratingratingratingrating by: Jimmy c02/28/2012

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Works great. Adapters are way easier than running new wires, and less messy. 32745

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- PK12716

ratingratingratingratingrating by: Marc C.05/16/2011

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Fast delivery, great transaction. Than ks14321

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Ask the Experts about this Pollak Wiring


  • Trailer Harness 7-Way to 4-Way Wiring Adapter for a 2002 Ford Explorer
  • I am not familiar with a 3 pin trailer connector. I am assuming you have a 4 pole (4 pin) that has 3 male and one female pins. If this is the case, you will need a 7 way to 4 way adapter, like part # PK12716.
    view full answer...

  • Will Adapter PK12716 Work With a 2008 Chevy Pickup Towing a Boat Trailer
  • Yes, adapter PK12716 will fit your 2008 Chevrolet Pickup factory plug as long as it is a 7-way plug. It should look similar to part # PK11916. It would have no problem connecting to the 4-way flat plug on your boat trailer. However, I do recommend double checking the style of your trailer plug, as 5-way plugs are very common on boat trailers. If you have a 5-way plug, it would look similar to part # 20016. If you do happen to need a 7-way to 5-way adapter, you could use part # 37385,
    view full answer...

  • 7-Way Balde to 4 Flat Adapter Compatible with a 2008 Mercedes M-Class GL 450
  • If your 2008 Mercedes 450 M GL model has a 7-Way connector, and your trailer uses a 4-Way flat, then the Pollak 7 Pole to 4 Pole Connector Adapter, # PK12716, will work. The unit plugs into the 7-Way socket on your vehicle and the 4-pole on the trailer plugs into the back of the adapter. We actually have many of this set up. I have included a link to them below. If you are not receiving any power or signals from your vehicle side connector, that could be the reason nothing has worked. You wil
    view full answer...

  • Troubleshooting Trailer Lights Blinking Out of Sequence on Trailer Towed by 2007 Chevy Trailblazer
  • It could be a bad ground or a short. You will have to check the grounds on each of the trailer lights and on the trailer connector. The lights usually ground through the mounting studs. If there is any dirt, corrosion, or rust it could cause a bad connection. You will also want to check where the light bracket mounts to the trailer and the ground at the trailer coupler. I have included videos below on testing for a ground and testing for shorts.
    view full answer...

  • How Do I Convert My 2006 Toyota Sequoias 7-Way Connector to a 4-Way Connector
  • All you would need is a Pollak 7 Pole to 4 Pole Connector Adapter, part # PK12716, to connect your 4 pole boat trailer to your 7 pole 2006 Toyota Sequoia. You will simply plug your 4 pole trailer connector into the Pollak 7 Pole to 4 Pole Connector Adapter, part #, PK12716 and then plug that into your Sequoias 7 pole connector and you will be good to go.
    view full answer...

  • Troubleshooting Left Turn Signal Problem When Using 7 to 4-Way Wiring Adapter PK12716 on a 2006 GMC
  • To determine where the problem is occurring, I would use a circuit tester to check for function at a couple different points. You will either need to leave on the turn signal in the cab of your truck, or have a helper operate it for you. We offer circuit tester # 3808 if needed. First, without the adapter or trailer connected, you can make sure that the left turn signal is reading correct at the 7-Way plug on your 2006 Sierra. The left turn signal is normally located at the second blade from
    view full answer...

  • Adapter Needed to Convert 4-Pole Trailer Connector to 7-Way for 1997 Chevy Tahoe
  • We offer an adapter that will convert your existing 4-pole to a 7-way. Part # 37185 also features a 4-pole for smaller trailers. If your trailer has brakes and you want them to actuate, you will also need a brake controller installed on your Tahoe. I would recommend a proportional controller, like the Tekonsha Prodigy 2 part # 90885. A proportional controller is preferable to the older time-delayed controllers, because the proportional controller can sense how quickly and with how much int
    view full answer...

  • Wiring Converter Needed to Connect a 3-Wire Motor Home to a 2-Wire Boat Trailer
  • Yes, since your motor home has separate brake and turn signals, and your boat trailer has combined brake and turn signals, you will need to use the Draw-Tite Taillight Converter, part # 119175KI.T To begin, you will need to access the wiring of your tail lights from inside the motor home. I would recommend having a friend help you operate the lights and turn signals as you use the included circuit tester to test the wires for function. You will connect the wires on the input side of the c
    view full answer...

  • Will Pollak 7 to 4 Pole Adapter Work On 2009 GMC Sierra With Factory 7-Way
  • Yes, the item you selected, Pollak 7 Pole to 4 Pole Adapter, part # PK12716, will work great to convert the 7-way on your 2009 GMC Sierra to a 4-way. This adapter will allow you to do just as you described; plug part # PK12716 into your truck, plug 4-way trailer connector into adapter, and have functional lights on trailer.
    view full answer...

  • Using 7-Way Trailer Connector 12-volt Accessory Circuit to Power Boat Winch
  • An electric winch used to pull a boat up on a trailer is designed to be wired directly to a 12-volt battery. The wire that feeds your 7-way trailer connector is too small in gauge to be able to handle the amperage draw of a winch. Attempting to use the 7-way to power the winch will almost certainly lead to blown fuses. Typically, a winch would be connected to an auxiliary battery located on the trailer. The auxiliary battery can be maintained with the 12-volt circuit from the 7-way, but it wi
    view full answer...

  • Wiring a 7-Way for 12 Volt Power to Maintain a Trailer Battery Towed by a 2011 Chevy Colorado
  • The wiring on a vehicle and in a trailer connector is not sufficient to up-charge a trailer battery unless it is a smaller break away battery. The wiring can maintain the current charge level on the battery but a battery charger is recommended to up-charge the battery. Since your truck does not already have a 12 volt wire at the back, you will need to hardwire one from the adapter you have to the positive terminal on the battery via a 40 amp circuit breaker # PK54540 and using about 20 feet
    view full answer...

  • Left Trailer Brake Light Does Not Work on New Trailer Towed by 2001 Nissan Pathfinder
  • The first thing you are going to want to do is test the 7-Way on the Pathfinder using a circuit tester like # 3808 if needed. The pins in the 3:00 and 9:00 positions are the turn signal/brake light pins. Have someone engage the left and right turn signals and then the brakes, 1 at a time, while you test with a circuit tester. If all of the functions are correct on the 7-Way then that indicates a problem on the trailer. If the signals are not correct on the 7-Way then you may have a dirty or c
    view full answer...


Info for this part was:


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