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

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

Part Number: PK11404
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$11.32
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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 (128)
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Pollak Trailer Wiring - PK11404

  • 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





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   (128 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:

I've got that trailer that has had one tough life. Yep, hundreds of gigs, PA and sound equipment rolling in and out, the heat, the cold, the sun, rain, and snow. Chicks, guitar players and drummers, you know, all the things that beat the hell out of a drum! Thank the music Gods for etrailer.com! The place to remedy the ills that trailers need in times of harsh environments, tough crowds, tin-ear'd musicians, and you ain't nothing but Hound Dogs!



by:

Heavy built. Very much wish it had a cable clamp on the backside similar to its male equivalent. As it is all the strain on the wiring/cable is supported by the terminals themselves.



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:

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



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.

Sierra K. profile picture
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.

Laura E. profile picture
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:

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



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 profile picture

Michael

2/13/2022

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



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:

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:

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

Jack profile picture

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:

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:

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:

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:

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:

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:

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 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:

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:

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:

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:

As described. Heavy duty



by:

Exactly what I needed, very well constructed. Will use to proivide lighting to RV dinghy vehicle and needed easy hook-up which is what it provides. Should provide many years of use.



by:

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



by:

Worked perfectly I plugged it in simply plug and play. I havnt had any issues with the connections. 10/10


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Show More Reviews

See what our Experts say about this Pollak Trailer Wiring

  • Where Does the Transmitter for the Custer Wireless LED Tow Bar Light Go
    The 4-pin round connector that includes the transmitter for the Custer Wireless LED Tow Bar Light # LIW-LDTL will plug into the 4-pin connector on your motorhome and then transmit the signal to the light bar. If you do not have a 4-pin round connector on your motorhome, you would need to add one. You can do this using 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 have attached...
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  • Is Pollak 4-Pole Round Trailer Wiring Socket # PK11404 Compatible with Coiled Extension # HM47045
    Yes, the Pollak Heavy-Duty, 4-Pole, Round Pin Trailer Wiring Socket, # PK11404, and the Hopkins Heavy-Duty Trailer Coiled Extension, # HM47045, are compatible parts. You can see a typical wiring description on the product page for the PK11404, under specs. White would be ground return, green is right turn and brake lights, yellow/red is left turn and brake lights, and brown is taillights. Essentially, there is no standard or agreed upon diagram of which function should go with which pin...
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  • What Style 4-Way Round Socket Does the Custer Trailer Connector Adapter # ADP001 Fit
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  • 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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  • What Gauge are the Internal Wires of the Roadmaster RM-1064-B
    I spoke to Roadmaster and they said all 4 internal wires of the # RM-1064-B are 12 gauge jacketed wire. Depending on what you will be doing with this wire, the following parts may also be good options for add on parts as well. The Pollak Heavy Duty 4 Pole Round Trailer End # PK11402 would attach to the end of the # RM-1064-B very nicely. This would then pair with the Pollak Heavy Duty 4 Pole Round Vehicle End # PK11404. The # RM-1064-B would then attach to a junction box on the trailer,...
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  • 4-Way Flat to 4-Way Round Trailer Plug Wiring
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  • 4-Way Trailer Connector for Use with Blue Ox Base Plate Kit
    If you just need the round 4-way trailer connector then you can use the Replacement 4-Wire Plug part # PK11404. However, you will still need the bracket part 299-0685 which is number 10 in the attached parts list in order to attach the 4-way to the two posts on the Blue Ox Base Plate Kit part # BX1118. If you do need the part 299-0685 then this would be something you would need to contact Blue OX to replace as we do not offer this part as a replacement at this time.
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  • Need to Adapt 6-Way Connector on Motor Home to 4-Pole Round Tow Bar Cable
    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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  • Which 4-Way Round Trailer Side Connector Fits Pollak Heavy-Duty, 4-Pole, Round Pin Socket # PK11404
    The 4-Way rounds have 2 different sizes. The connector that is compatible with # PK11404 is # PK11402. What you can do is either replace the 4-Way flat on the trailer side with this connector or you can replace the 4-Way round on the adapter you have with # PK11402.
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  • Trailer Wiring Socket Recommendation for a 4-Pole Round Trailer Connector
    For a 4-pole round trailer connector and socket, I would recommend looking at the Pollack Heavy-Duty 4-Pole Round Trailer Connector, # PK11409, and the Pollack Heavy-Duty 4-Pole Round Trailer Socket, # PK11410. The connector and socket have a chrome-plated finish for corrosion resistance. I have attached a photo showing the typical wiring set up for 4-pole round trailer connectors. This should help when you are wiring the connectors to your trailer and vehicle.
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  • Adapter to Connect 7-Way Vehicle End to 4-Pole round Trailer Connector on 2002 Mercury Mountaineer
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  • Trailer Wiring Adapters Available for 7-Pin Flat to 4-Pin Round Connectors
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  • 4-Way Round Trailer Connection Much Smaller Than What I Can Find
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  • Is the 4-way flat to 4-way Round # 47465 Compatible with with 4-Pole # PK11404 and # PK11410
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  • Distance Between Mounting Holes on the Pollak 4-Way Round Connector
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  • How Should 4-Way Round Vehicle End PK11404 Be Wired
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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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  • Female Side Of 4-Pin Round
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  • 4-Way Round Adapter Recommendation for the Custer Wireless LED Lights # LIW-LDTL
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    Image 1 for Image 2 for
  • Pin Designation on 4-Way Round Socket Vehicle End
    The Pollak Heavy-Duty, 4-Pole, Round Pin Trailer Wiring Socket - Metal - Vehicle End # PK11404 will have the wires labeled in the following manner: White - Ground Green - Right Turn and Brake Lights Yellow/Red - Left Turn and Brake Lights Brown - Tail Lights I've attached a video to help with this pin out. If you are looking at the 4 pins. The bottom left is ground, the bottom right is running/tail lights, the top left is left turn and brakes and the top right is right turn and brakes....
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    Image 1 for
  • 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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  • Recommended Adapter for 4-Way Round Trailer Connector on Motorhome
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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:
Cole B
Employee Zach D
Video Edited:
Zach D

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