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Pollak Heavy-Duty, 7-Pole, Round Pin Trailer Wiring Socket - Vehicle End

Pollak Heavy-Duty, 7-Pole, Round Pin Trailer Wiring Socket - Vehicle End

Item # PK11720
Our Price: $11.92
Trailer Wiring
Shipping Weight: 0.75 lbs
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Establish a secure connection between your trailer and semi or other tow vehicle with this 7-pole, solid pin, wire-insertion-style socket. Zinc die-cast socket is self-grounding and includes floating pins for easy alignment and maximum pin contact. Great Prices for the best trailer wiring from Pollak. Pollak Heavy-Duty, 7-Pole, Round Pin Trailer Wiring Socket - Vehicle End part number PK11720 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (129)
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Pollak Trailer Wiring - PK11720

  • Trailer Connectors
  • Vehicle End Connector
  • 7 Round - Round
  • Plug Only
  • Pollak

Establish a secure connection between your trailer and semi or other tow vehicle with this 7-pole, solid pin, wire-insertion-style socket. Zinc die-cast socket is self-grounding and includes floating pins for easy alignment and maximum pin contact.


Features:

  • Zinc die-cast 7-pole socket connects trailer to towing vehicle
  • Round, floating, solid brass pins
    • Easy alignment and maximum contact
    • Minimum voltage drop is ensured
    • Dielectric (non-conducting) grease coating
      • Protects against corrosion and resistance
    • Wide range of wire gauges acceptable, from #16 wire to #8 ground wire
      • Ground terminal accepts minimum #14 gauge - maximum #8 gauge
      • All other terminals accept minimum #16 gauge - maximum #10 gauge
  • Self-grounding to #1 Ground Terminal
  • Slant-mounted with built-in drain slot on cover
    • Rids housing interior of accumulated moisture
    • Opens and closes with stainless steel spring
    • Bottom lip extended for better plug support
  • 2-Hole mounting style
  • Highest quality - meets and exceeds all standards of SAE J560
  • Interchangeable with all competitive makes


Specs:

  • Mounting dimensions: 2" diameter hole
  • Volt rating: 6 volts - 28 volts
  • Current rating: 40 continuous-duty amps
  • Wiring configuration:
    • Color - circuit - recommended wire gauge:
      • White - Ground Return - 10 gauge (FMVSS-121 Anti-lock Gauge - 8)
      • Black - Clearance, Side Marker, Identification - 12 gauge
      • Yellow - Left Turn and Hazard Signal - 12 gauge
      • Red - Stop Lamps and Anti-Lock Devices - 10 gauge (FMVSS-121 Anti-lock Gauge 10)
      • Green - Right Turn and Hazard Signal - 12 gauge
      • Brown - Tail, Rear Clearance, Marker and License-Plate Lamps - 12 gauge
      • Blue - Auxiliary Circuit/ABS - 10 gauge
  • 1-Year limited warranty


11-720 Pollak Heavy-Duty, 7-Way, Round Pin Trailer Wiring Socket - Vehicle End
Replaces 52016





Customer Satisfaction Score:


Customer Reviews

Pollak Heavy-Duty, 7-Pole, Round Pin Trailer Wiring Socket - Vehicle End - PK11720

Average Customer Rating:  4.9 out of 5 stars   (129 Customer Reviews)

Establish a secure connection between your trailer and semi or other tow vehicle with this 7-pole, solid pin, wire-insertion-style socket. Zinc die-cast socket is self-grounding and includes floating pins for easy alignment and maximum pin contact.

by:

Not using on a trailer, but making disconnect harness for quick attach snowblower to loader arm. Connection cord is 7 pin tractor trailer tether, Worked well.



by:

Product is high quality & works great!

Can't
beat etrailer



by:

Great Product. Just remember to order the boot for the back of it separate.



by:

Trailer plug works great.



by:

Awesome product selections and quick response towards shipping. Made me feel like I was actually getting somewhere. If you have a trailer, camper, or any type of tow behind application get HOOKED UP with this company. Very satisfied

Toby N.

6/9/2017

I hook and unhook my trailer about twice a day as I need my truck for hauling stone and dirt. I have put this through the ringer. Still good as new...Happy customer



by:

I would highly recommend this. It is heavy duty and quality built. A great value for the money



by:

Excellent product! - have, over only a few years, steadily worked my way through progressively more durable trailer cable sockets. The last one was the Hopkins heavy-duty, or something to that effect. The plastic casing on it broke within three months. I'm really looking forward to putting these to the test - I'm a farrier - I pull a trailer every day; the traffic in this area means that I must rely on excellent contact between vehicle/trailer for turn / brake signals and functioning trailer brakes. Nothing less. These sockets are heavy, all-metal (zinc-coated - road salt shouldn't be a problem), with few / no seams. When the trailer end is plugged into the truck receiver - it's a nice tight fit, with no movement: it's locked in. There are only two drawbacks for the homeowner who is looking for the do-it-yourself package: if you are looking for a metal bracket that bolts underneath the truck bumper and holds this part - there isn't any. And no bolts, either. I don't know if they sell them for these - I didn't check. I simply manufactured my own. So far, I'm delighted with the product.



by:

I ordered the 7 pole socket (PK11720) and the rubber boot for it. (PK11761) Also a trailer end plug (PK11700) to fit into the socket. The items arrived on the exact estimated arrival date that I was given on the day of ordering.
Wiring the plug and the socket was very easy. Each terminal has a small screw that holds the end of the wire in place. It is a simple matter of threading the screw out, putting the wire in the hole, and then tightening the screw onto the wire.
The boot fits snugly onto the back of the socket.
I used these parts to repair the power cable assembly to a truck mounted forklift. The parts are exactly what was needed to replace what had been damaged. The quality is good and the prices are excellent. I will use etrailer.com in the future when I need related items. I am very pleased.



by:

I got exactly what I expected. Great customer service & follow through.

Ken

1/29/2023

This is a quality socket that is being used to support electrical connections between my RV and toad. Its held up beautifully & I continue to be very pleased with it.



by:

Bought to replace a 12 year old Pollak identical connector that I removed and could not re-use due to wire connections on the back being corroded (road salt area). The 12 year old connector worked fine except the flip up cover was a bit stiff. The 12 year old connector was also made in USA. The new connector I just received is made in China. From the price, I had hoped it was still made in USA. It seems that most of the time I am disappointed with the newer imported China versions of products once manufactured in USA. So my expectations for this product to have a long life are not very high.



by:

This is much better than the OEM on my New Holland Tractor asit is made of metal. It also cost less than the all plastic replacement from the dealership. etrailer was fast with delivery. Thank you.

John G.

1/5/2017

It is working out very nicely, really glad I bought it!



by:

Well I have not installed it yet, but it is marked for each trailer wire by color, matching much earlier models. Did not come with mounting screws and nuts, but not a big deal.



by:

Again, high quality and a great brand. The wiring diagrams assisted me with understanding a difference between round pin and blade styles. I bought both with confidence for my F-350.



by:

Quality product arrived on time. Will make future purchases with etrailer.com

Mike M.

10/12/2016

Performed as expected to date.



by:

The metal body and good quality pins and connections make this one the only one for a professional job.
Remember if you use dielectric grease and the rubber boot you'll never have corrosion in your connections . Dissimilar metals and weather are a bad combination.



by:

For me, and probably you, etrailer.com is a great place to shop/buy quality products. They give great follow up after ordering and fast shipping @ a fair price. I believe their service & pricing is unbeatable. I do shop for bargains & etrailer is @ the top of my list.



by:

I could not find this style or make trailer plug in my local auto parts store. I got tired of trying to find it so I ordered it on line. etrailer was convenient and less expensive than any other website.



by:

Etrailer web site was easy to work with and outstanding communication with your orders. Package was also delivered earlier than expected. I would rank etrailer as A+



by:

Excellent product! I bought this to replace the old, brittle, and broken plastic trailer connector on my 1973 aluminum camper. The plastic one stood out against the aluminum which I didn't like. So, I'm excited how this will blend in and look more natural. Besides aesthetics, this very sturdy and ruggedly built. It will clearly outlast the camper, no doubt. Will definitely buy again if I find myself with a different camper in the future.



by:

Great construction of the product, durable enough to withstand harsh working conditions and "operators" I am using that term lightly due to the mishaps that occur on a regular basis at my location.



by:

This trailer lighting socket is excellent quality, and super fast shipping



by:

Exactly as displayed on website.



by:

Very fast service AGAIN! Always my first choice when shopping for trailer parts.



by:

Best 7 pole connector out there!!!!



by:

Great, Fast, Knowledgable and Polite Service. Return policy is also terrific no questions asked. I will use e trailer again. Thank You
Ken


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Show More Reviews

See what our Experts say about this Pollak Trailer Wiring

  • What Wire Color Codes and Functions Are Used for Pollak Connecter 12-705 and PK11720
    There is no industry standard wiring code. Pollak uses the following: White - Ground Return Black - Clearance, Side Marker, Identification Yellow - Left Turn and Hazard Signal Red - Stop Lamps and Anti-Lock Devices Green - Right Turn and Hazard Signal Brown - Tail, Rear Clearance, Marker and License-Plate Lamps Blue - Auxiliary Circuit/ABS We have a different combination of colors we use for specific functions which you can see in the wiring FAQ article that I have linked. Finally,...
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  • What is Typical Rating for 12 Volt Accessory Circuit of Trailer Wiring
    It depends on the vehicle but it's pretty common for the 12 volt accessory circuit of a 7-way to be protected by a 40 amp fuse. 30 amp is also a common fuse rating as well.
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  • Adapting a 7 Round Pin on a Trailer to a 7 Way RV Plug
    Though replacing the plug on your trailer with something like the Hopkins 7-Way RV Style Connector with Molded Cable - Trailer End - 8' Long - RV Standard # H20046 will be my recommendation, if you wanted to keep your current 7 Pin on the trailer, the following can be used to adapt it. The Hopkins # H20046 will still be used, but it would be wired into the Pollak Bracket for Single-Pole Trailer Wiring Socket # PK11720. The 7-Pole Rubber Socket Boot # PK11761 would then keep the connections...
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  • 7 Pin over 7 Blade Which One is Better and Why?
    I would say the 7 blade connector is better and that answer is based on availability and common use. The 7-Way blade style trailer connector is the most common 7-Way in use at this time. If you are making a choice today I would recommend going with a 7 blade like the Hopkins Endurance item # HM48470. However, if you already have a 7-Way round connector you can just use an adapter like the Pollak Trailer Connector Adapter 7-Way item # HM47425 when needed.
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  • Installing 7-Way and Brake Controller on 1991 Chevy C/K 1500
    You will need to start with a 4-way on your 1991 Chevy 1500. For that you would want the # 18252. From there you would need to convert the 4-way to a 7-way so that you can install the brake controller. For that you will want the Brake Controller Install Kit and 7-Way Adapter part # ETBC7. I attached installation instructions and an install video for this product as well. For a brake controller I would recommend the Prodigy P2 Brake Controller part # 90885. This is our best selling brake...
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  • No Brake Signal on a 7-Way Round Pole Trailer Connector on an RV r
    If your RV came with a 7-Way round pole trailer connector then it could be that there are fuses or relays that need to be in place or replaced if present to make the 7-Way fully functional. Check the owners manual to determine the location of any fuses or relays related to the trailer connector. If you hardwired in the trailer connector and the RV has separate turn and brake lights then the brake circuit will not be present with the turn signals on the 7-Way. You would need to covert the...
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  • Solution for Towing Trailer with 7-Way Round and Separate Lighting with Ford F-350
    We actually do have wiring adapters available that go from a 7-Way blade connector on the truck to a 7-Way round on the trailer, such as with the Pollak # PK12727, however since the circuits are separated on the trailer side an additional converter would still need to be added and the adapter itself would likely need to be re-wired. For this reason I recommend going a different route. I honestly think the easiest solution is going to be to simply add a second 7-Way on your truck, using...
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  • Trailer 7-Way Connectors and Brake Controller For a 2009 Sterling 7500 Series Dump Truck
    With the Pollak Heavy-Duty, 7-Pole, Round Pin Trailer Wiring Socket # PK11720 it does not have a pin for a trailer brake controller as the commercial/agricultural trailers it connects to will tie into the air brakes on the truck. If you converted the auxiliary pin to use as a brake control wire you would still need to add a charge line circuit wire to maintain the breakaway battery on the trailer. Switching to the Hopkins Endurance Multi-Tow 7-, 5- and 4-Way Flat Trailer Connector # HM48470...
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    We had the chance to install a P2 brake controller part # 90885 in a 2018 Chevy Colorado (same as a GMC Canyon) and we found the brake light signal switch to be white with a blue stripe. Check out the install video I attached to see the whole process.
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  • Wiring Configuration For 7-Way Vehicle And Trailer Connectors
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