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Pollak Heavy-Duty, 4-Pole, Round Pin Trailer Wiring Socket - Metal - Vehicle End

Pollak Heavy-Duty, 4-Pole, Round Pin Trailer Wiring Socket - Metal - Vehicle End

Retail:$25.82
Our Price: $11.33
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Trailer Wiring
Shipping Weight: 0.35 lbs
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Establish a secure connection between your trailer and your towing vehicle with this 4-pole, round pin, wire-insertion style socket. Zinc die-cast socket has concealed terminals to provide easy assembly and durability . Great Prices for the best trailer wiring from Pollak. Pollak Heavy-Duty, 4-Pole, Round Pin Trailer Wiring Socket - Metal - Vehicle End part number PK11404 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (122)
  • Q & A (0)
  • Photos

Pollak Trailer Wiring

  • Trailer Connectors
  • Vehicle End Connector
  • 4 Round
  • Plug Only
  • Pollak

Establish a secure connection between your trailer and your towing vehicle with this 4-pole, round pin, wire-insertion style socket. Zinc die-cast socket has concealed terminals to provide easy assembly and durability .


Features:

  • Heavy-duty, metal, 4-pole socket connects trailer to towing vehicle
  • Round brass pins
    • Minimum voltage drop is ensured
    • Dielectric (non-conducting) grease coating
      • Protects against corrosion and resistance
    • Wire gauges up to #12 gauge wire accepted
  • Concealed terminals for durability
    • Provide easy assembly
  • Spring-loaded lid
    • Keeps dust and moisture out of interior
  • 2-Hole mounting style

Specs:

  • Fits Pollak Heavy-Duty, 4-Pole Round Pin Connector (PK11402)
  • Does not fit Pollak Heavy-Duty, 4-Pole, Round Pin (PK11409)
  • Mounting dimensions: 1-3/8" diameter hole
  • Mounting screw holes: 1/4"
  • Volt rating: 12 volts - 24 volts
  • Current rating: 35 amps
  • Wiring configuration:
    • Color - circuit:
      • White - Ground Return
      • Green - Right Turn and Brake Lights
      • Yellow/Red - Left Turn and Brake Lights
      • Brown - Tail Lights
  • 1-Year limited warranty


11-404 Pollak Heavy-Duty, 4-Way, Round Pin Trailer Wiring Socket, Concealed Terminals - Metal - Vehicle End

Item # PK11404





Customer Satisfaction Score:


Customer Reviews

Pollak Heavy-Duty, 4-Pole, Round Pin Trailer Wiring Socket - Metal - Vehicle End - PK11404

Average Customer Rating:  4.8 out of 5 stars   (122 Customer Reviews)

Establish a secure connection between your trailer and your towing vehicle with this 4-pole, round pin, wire-insertion style socket. Zinc die-cast socket has concealed terminals to provide easy assembly and durability .

by:

Excelent Quality! Parts was a perfect fit for the factory location.



by:

I've never really liked Flat-4 type connectors. Unless you leave them dangling, they usually require that you crawl under the vehicle to connect them. (...Murphy's Law dictates that this will always be when it's raining or snowing).
This Pollak 4-pole round socket, along with a Tow-Ready harness, and matching trailer connector, provides a neat, factory installed look, that's more convenient, and durable.
My orders from etrailer arrived quickly, and with great seller communication. A+



by:

It was a replacement for an old trailer and it works just like it is supposed to.



by:

Ordered this along with the Remote Controller, however, the controller would not slide onto the 4 poles. Tried to squeeze the poles and they split leaving one side on each pole. Ended up grinding each partial pole tip so the remote could slide on it. Don't know how long they will last before I have to order another 4 prong connector. They are working fine for now.

Etrailer Expert

Sierra K.

6/22/2022

It sounds like you were able to get this part to work for what you needed it for, however, the remote item # BDW20144B is a replacement for the bulldog winch BDW10012 and it will plug right into the winch.



by:

Quality is good but buyer beware - you must use a compatible plug, as all round 4 pins are not the same. This particular socket has two different size pins (3/1) so be sure to buy a matching plug or pick a different receptacle.

Etrailer Expert

Laura E.

1/9/2017

Thanks for your review and your business, Pete. I am glad you brought this up! The PK11404 is used in conjunction with PK11402.



by:

The round pin socket is good, the only issue is it is very easy to install the hookup wire upside down due to the key is not very pronounced in the socket. The socket needs a deeper master key slot.

Michael

2/13/2022

Still working no issue again which it had a better master key slot



by:

This replaces a failed one that was made of rubber and did not hold up to repeated plugging and unplugging.

Jack

5/24/2018

It has worked very well. We sold the RV and now have the BlueOx tow bar and brake system for sale.



by:

Old park hard to find in this one as well made



by:

I like this Pollak brand. Their connectors always seem to work the best. I wish this 4 pole connector came with a rubber boot for the back. I couldn't find one, even at the Pollak website. I ended up taping it up really good with electrical tape.



by:

I've used the Pollak pk11404 on a Jeep for a couple of years. The Wi. winters can be a beast on the standard flat 4 wire plugs. This plug came thru winters like a champ. I've traded cars so this 1 is for the new Chev. Great Job Etrailer



by:

This wiring socket has a look and feel of quality. Appears very durable. I also purchased the male socket and it locks in place tight. I'm using this to connect wiring from my RV to the Jeep while towing.



by:

After a Wisconsin winter it worked like a champ. The winters here are the test for any wiring product. This plug passed all the way.



by:

Poorly manufactured. Fell apart after 3 months. The inside wire connection came loose and pulls out of the body of the socket. Had to rebuild the item and secure inner socket with sheet metal screws. It still works but I expected better quality and longevity.



by:

Needed to complete the connection, does require some drilling of holes for mounting screws, but makes a solid connection. Spring loaded cover also locks the connection together. Is easy to use in all weather conditions, and with metal construction is heavy duty and long lasting



by:

The product that I needed to repair my trailer connection was not to be found in any of our parts stores. I looked on various webs and ran across etrailers's parts. The parts that I ordered were as advertised, came to me, promptly, and I was really impressed by their packaging. I will buy from them again.



by:

As described. Heavy duty



by:

Just completed the installation of this product. I'm happy with the quality and believe it will be better than the chrome one (different brand) that it replaced. As usual, "etrailer" did an excellent job of getting the product to me quickly and provided constant follow-up through delivery. They are the best in my opinion!!!



by:

Found this company by accident. Living outside of a large city it can take me most of a day to obtain the parts I need. This works well as I can order my parts and move on to the next project. The parts so far have come fast, as stated and packaged well for the travel to my shop allowing me to get the project done or back into service.
NOTE: Check out the etrailer videos online, They are a great resource for the beginner into the industry or the seasoned professional that wants a refresher.



by:

Product is just what I expected. I'm going to use this to plug a salt spreader to the truck. The factory harness is pretty beat up so this will make plugging it in much easier. Extremely fast shipping. Great place for your trailer needs. Anything I need from now on will be from Etrailer.



by:

The product is outstanding as is etraier. Only once through the years have I had to return one item and it was quickly corrected. No hassles Just good business.



by:

Products arrived earlier than promised. Very easy to install.
So far, they are working better than the plastic OEM products that wore out after 2 years of use.
Only possible improvement would be to include a colored wiring diagram for people who not be as knowledgeable about electricity.



by:

Product is exactly what I ordered. I received an email confirming order was placed into system.... 20 minutes later, I received an email that my order was ready for shipping!!
2 days later, I have my product!!

Awesome communication and Awesome prices.

I will be a returning customer.

Thanks etrailer.com



by:

Item is as described and good heavy duty quality. S&H was very reasonable and delivery to Hawaii took less than a week.

I highly recommend etrailer.com and will personally shop here again.



by:

Just what I wanted! A HEAVY DUTY 4 pin connector for my tow vehicle. No issues or problems.



by:

Arrived on time good quality


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Show More Reviews

See what our Experts say about this Pollak Trailer Wiring

  • What is the Center Bracket for In Roadmaster Base Plate Kit # 1425-1, 2004 Jeep Grand Cherokee
    You are correct. The center bracket with the round hole in Roadmaster XL Base Plate Kit, # 1425-1, is for the wiring harness to mount to. A connector like # RM-910030-1 can be mounted in that bracket, or Pollack connector, # PK11404.
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  • How to Wire Nissan Tow Car to Winnebago Motorhome with 4 Pin Round Connector
    Wire colors on motor homes and vehicles are not standard and vary, even between models produced in the same model year. Because this is the case you will need to use a circuit tester, item # PTW2993 if needed, to test the existing wires on your motor home and vehicle to determine the correct wires to splice your tow wiring to by function. Use the circuit tester and have someone in the vehicle activate each function. Once each function is located on the car and motor home label each one...
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  • Adapter to Connect 7-Way Vehicle End to 4-Pole round Trailer Connector on 2002 Mercury Mountaineer
    There is not a plug and play adapter to go from a vehicle end 7-Way connector to a 4-Pole round connector. One can be made to work with your setup using the following parts. Pollak Black Plastic, 7-Pole, RV-Style Trailer Connector - Trailer End, item # PK12706 Bonded 4 Wire - per foot, item # 16-4B-1 Pollak Heavy-Duty, 4-Pole, Round Pin Trailer Wiring Socket - Metal - Vehicle End, item # PK11404 If you do not wish to build an adapter for your setup you can change out the trailer connector...
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  • 4-Way Round Trailer Connection Much Smaller Than What I Can Find
    I have never seen a connection like that for a 4-way. Regardless of the pin size the slot is internal to the plug on the connection point instead of external as on current 4-Pole Round Connector # PK11404. I recommend replacing the connection with a standard size round connector # PK11404 or converting to the more common 4-flat # HM48190. The Adapter 4 Round to 4 Flat # will use the standard 4 round size connector.
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  • How Should 4-Way Round Vehicle End PK11404 Be Wired
    If you are towing a vehicle with a motor home the 4-way round connections inside the vehicle end are usually as follows: Top left: Yellow wire, Left turn and brake function. Bottom left: White wire, ground wire. Top right: Green wire, right turn and brake function. Bottom right: Brown wire, tail light function. There is not an industry standard wiring diagram for the 4-Way Round vehicle end, part # PK11404, so you may need to use a circuit tester, part # PTW2993 if needed, to check...
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  • Availability of 4-Round Trailer and Vehicle Connectors that Will Accept 12 Gauge Wire
    A 3-flat is indeed a tough plug to find. It might be best to change to a 4-Way of some type. We have the Pollak Heavy-Duty, 4-Pole, Round Pin Trailer Wiring Connector, # PK11402, that will accept up to 12 gauge wire. This is a trailer end plug. The vehicle side is the Pollak Heavy-Duty, 4-Pole, Round Pin Trailer Wiring Socket, # PK11404. It, too, will accept 12 gauge wire. I have included an FAQ article on trailer wiring below.
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  • Distance Between Mounting Holes on the Pollak 4-Way Round Connector
    I grabbed a Pollak Heavy-Duty, 4-Pole, Round Pin Trailer Wiring Socket, # PK11404, from our warehouse to measure and found the distance between the mounting holes on center is 1-3/4 inches. If you check out the picture I attached you will see that you would have to come up with a shackle type adapter to allow this connector to be used on your base plate.
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    Image 1 for Image 2 for
  • What Type of Socket Does 4-Way Round Side of HM47043 Attach to
    The 4-way round side of the Hopkins Endurance Flex-Coil Trailer Connector Adapter part # HM47043 that you referenced would attach to a 4-way round like the part # PK11404 and would work well.
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    Image 1 for
  • Width Between Mounting Holes and Total Width of Pollak Heavy-Duty, Trailer Wiring Socket, # PK11404
    I spoke with my contact at Pollak. He stated the center to center distance between the mounting holes on the Pollak Heavy-Duty, 4-Pole, Round Pin Trailer Wiring Socket, # PK11404, is 2-7/8 inches. The total width is 3-3/8 inches.
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    In order to create a male-ended plug for the female 4-way round connector on your Custer Wireless LED Tow Bar Light # LIW-LDTL, you need to use the Pollak 4-Pole Round Wiring Socket # PK11404. Once you have the plug, you then need to route 16-gauge wire # 16-4B-1 to those pins into your current wiring. I went ahead and attached a diagram of the typical 4-way round pin setup along with the vehicle-side 4-way flat wiring diagram. I've also attached a helpful article that walks you through...
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    I have some wiring adapter options for you, but if your vehicle has a 4-Pin round connector, like # PK11404, we only offer adapters to connect to 4-Way flat trailer connectors and tow bar wiring extensions like # HM47043 that you referenced. If you're looking for a wiring adapter to allow you to connect a trailer with a 4-Way flat connector, like # 18004, to your vehicle's end 7-Way blade-style socket, like # PK11893 we have an adapter that will work great. For this set-up, you can use...
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  • No Drill Mounting Bracket for Installation of a 6-Way Connector # PK11404 on a 2009 Toyota Tacoma
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    Yes, we have round connectors that can be spliced onto the Curt T-Connector Wiring Harness, # C56040, for your 2011 Subaru Outback Wagon. If your trailer has a 4-Way round connector you would need the Pollak Heavy-Duty, 4-Pole, Round Pin Trailer Wiring Socket, item # PK11404. If your trailer has a 6-Way round connector you will need the Pollak 6-Pole, Round Pin, Trailer Wiring Socket, item # PK11609. If your trailer has a 7-Way round connector you will need the Pollak 7-Pole, RV Trailer...
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  • Testing 4-Pole Vehicle Socket to Confirm Wiring Configuration
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    We have 4-way bonded wire sold by the foot with part # 16-4B-1 which you could order in a quantity of 12 feet to get the length you are wanting. Then for 4-way plugs we have the male # PK11402 and female # PK11404.
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    I would recommend installing a 4-pole round socket, part # PK11404 on the rear of the motor home, rather than trying to construct an adapter. The socket would need to be tapped into the wires feeding your 6-way. We offer 4 conductor wire, part # 16-4B-1 that is sold by the foot, you would probably want at least two feet. The wire is conveniently color coded, and would attach to the 4-pole socket as follows: Attach the brown wire to the # 2 terminal. Terminal # 1 would be grounded to the...
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  • Pin Designation on 4-Way Round Socket Vehicle End
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Info for this part was:

Employee Sarah L
Expert Research:
Sarah L
Employee Robert G
Expert Research:
Robert G
Employee Patrick B
Expert Research:
Patrick B
Employee Michael H
Expert Research:
Michael H
Employee Tyler C
Written by:
Tyler C
Employee Joshua S
Video by:
Joshua S
Employee Cole B
Installed by:
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Employee Zach D
Video Edited:
Zach D

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