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  1. Custom Fit Vehicle Wiring
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Pollak Heavy-Duty, 7-Pole, Round Pin Trailer Wiring Socket - Vehicle End
Pollak

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

Part Number: PK11720
In Stock
$12.44
Retail:$22.62
You Save: 45%
Custom Fit Vehicle Wiring
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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. 1-800-940-8924 to order Pollak custom fit vehicle wiring part number PK11720 or order online at etrailer.com. Free expert support on all Pollak products. Great prices and Fastest Shipping for Pollak Heavy-Duty, 7-Pole, Round Pin Trailer Wiring Socket - Vehicle End. Custom Fit Vehicle Wiring reviews from real customers.
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  • Reviews (152)
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Pollak Custom Fit Vehicle Wiring - PK11720

  • 7 Round
  • Trailer Hitch Wiring
  • Vehicle End Connector
  • 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:

Ratings & Reviews

4.8

152 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:

great item and fast delivery



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:

Great connector.



by:

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



by:

amazing quality!



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. profile picture

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:

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. profile picture

John G.

1/5/2017

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



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:

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:

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

Mike M. profile picture

Mike M.

10/12/2016

Performed as expected to date.



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:

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:

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:

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

Ken profile picture

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:

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:

Just got the order looks great Pollak parts like these are the real thing not like Pollak market fakes that I have now, nothing but trouble. They are made heavy. I have not put them on yet but getting ready to . When I get finish and use them awhile I will do this again and update this review. Pricing and shipping are great.



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:

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



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:

Best 7 pole connector out there!!!!



by:

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



by:

Thank you guys, Order was delivered very quickly, the price was very reasonable. I cant describe how happy I am with ETrailer . Thanks again, John



by:

Product is high quality & works great!

Can't
beat etrailer


25
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Show More Reviews

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    Normally you can find the brake light switch under the dashboard at the top of the brake pedal. There could be a number of wires attached to the switch so you can use a tester like part # PTW2993 to test the wires. Since the auto manufacturers can use different color wires it is always best to use a tester and check the wires for function and not color. You would need to find the wire that only shows power when the brake pedal is pressed. That would be the wire that gets attached to the...
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  • Recommended 7-Pole Round Plug & Play Wiring Harness Adapter for 2005 Ford Super Duty Factory Wiring
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  • Adding Reverse Lights To Semi Trailer 48 Foot Flatbed Through Connecting to 7-Way
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  • What Color Wires Go Where On Trailer 7 Way Harness?
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  • Availability of 7-Pole Round Extension Cord
    Hi Tim; we don't have anything for a 7-pole round but I can give you the parts to make one. If you want female to female you will need two of the # PK11720 along with the Deka Wire - Jacketed 7-Wire # DW04914-1. The wire is sold by the foot so you can make it however long you need it to be. If you want a male end for one side to make a standard extension you can use the # PK11702.
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  • How to Make 7-way to 6-Way Adapter for Semi Truck to Gooseneck
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  • 7 Pin over 7 Blade Which One is Better and Why?
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  • How to Make a 5-Way Round Pin to 7-Way Round Pin Trailer Connector Adapter
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    On the back of the Pollak 7-Pole, Round Pin Trailer Wiring Socket - Vehicle End, part # PK11720, it is marked alongside the pin with the color of the wire that connects to that pin location. I am also including a photo that will show a 7-Way round pin connector for the vehicle end with the colors and functions listed for each pin. I am also including a link to a FAQ page on trailer wiring.
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