Pollak Black Plastic, 7-Pole, RV Blade-Style Trailer Socket - Vehicle End

Pollak Black Plastic, 7-Pole, RV Blade-Style Trailer Socket - Vehicle End

Item # PK12-707E

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PK12-707E - Plug Only Pollak Wiring
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  • Trailer Connectors
  • Vehicle End Connector
  • 7 Blade
  • Plug Only
  • Pollak
Establish a secure connection between your towing vehicle and trailer with this 7-pole, RV blade-style socket. Black plastic socket has non-corroding, shock-resistant interior design that eliminates shorting out and is color-coded to RVI standards. Lowest Prices for the best wiring from Pollak. Pollak Black Plastic, 7-Pole, RV Blade-Style Trailer Socket - Vehicle End part number PK12-707E can be ordered online at etrailer.com or call 800-298-8924 for expert service.


  • All Info
  • Reviews (154)
  • Q & A (114)
  • Videos (3)
  • Photos
  • Why etrailer?

Pollak Wiring - PK12-707E

Establish a secure connection between your towing vehicle and trailer with this 7-pole, RV blade-style socket. Black plastic socket has non-corroding, shock-resistant interior design that eliminates shorting out and is color-coded to RVI standards.


Features:

  • Standard, 7-pole, RV blade-style socket connects tow vehicle to trailer
  • Black plastic construction
    • Eliminates rusting
    • Enhances appearance
    • Prevents difficulty in plug removal
  • Non-corroding, shock-resistant interior design
    • Terminal reinforcer dams eliminate shorting out
      • Prevent contact from spreading
    • Center pins accepts up to 8-gauge wire
    • Vinyl inserts keep out dirt and moisture
  • Spring-loaded lid with stainless steel spring and rubber gasket
    • Prevents leaks when closed
    • Drain slot has angled design for drainage
    • Secures trailer-end connector in socket
  • Safety latch
    • Ensures connector is plugged into socket
  • Color-coded to RVI standards


Specs:

  • Wiring configuration:
    • Color - circuit - recommended wire gauge:
      • White - Ground - 10 gauge
      • Blue - Electric Brake - 12 gauge
      • Green - Tail, License, and Running Lights - 14 gauge
      • Black - Battery Charge - 10 gauge
      • Red - Stop and Left-Hand Turn Signal - 14 gauge
      • Brown - Stop and Right-Hand Turn Signal - 14 gauge
      • Yellow - Auxiliary Circuit - 14 gauge
  • Distance between mounting holes center to center: 2-1/4" wide x 1-1/2" tall
  • 1-Year limited warranty


Dimensions

12-707E Pollak Black Plastic, 7-Way, RV-Style Trailer Socket - Vehicle End







Video of Pollak Black Plastic, 7-Pole, RV Blade-Style Trailer Socket - Vehicle End


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




Video Transcript for Pollak Black Plastic RV 7 Pole Trailer Socket Review

Today we are going to do a review of the 7 pole connector from Pollak, part number PK12707. The outside of this plug is constructed of black plastic, and the interior has a noncorroding, shock resistant design. The plug features some terminal reinforcement dams that help eliminate shorting. The lid is spring loaded with a stainless steel spring, and also features a safety latch to ensure yo are fully connected to your trailer. Now lets take a look inside this connector and show you how to wire in the plug. :28

To wire our 7 way plug we want to first remove the two screws that are holding the inner section inside the connector. Just open up the lid and pop the center section out. Next we can go ahead and our wire in the back of the connector. You will see that there is a set screw here that allows us to adjust the tightness of the wire at the back of the connector. This connector will accept up to a 7 wire bonded cable. :54

I am going to loosen that up a little bit and our wires. And then we just want to wire in our wires to the coinciding pins here on the inside of the connector. You will notice that the pins are labeled with colors and numbers as well. That is going to help us decide what position we want to put each coinciding wire with. On a factory set up 7 pole, the brown pin is going to be for the right turn, right brake. The blue is for electric brakes. White will be our ground. Red will be you left turn, left brake. Green will be your running lights. Black will be your 12 volt hot lead. The center pin is typically the reverse lead. 1:36

To wire the wires into the connector we want to take phillips head screw driver and release the screw. We can even wire the corresponding wire directly by striping back the jacketing. We can either connect the wire to the plug by simply stripping off the jacketing and sliding it into position and tightening it down. Or we can use a spade connector, which will help clean up the wires inside here and keep them from accidental shorts. We want to repeat that process for all seven wires if used. Then we can just go ahead and re the middle section back into the 7 pole. You will notice that there is a little notch here at the bottom it, that is going to align with a little indentation on the inside of the connector, that will help us line it up so we know we are doing it correctly. There you have it for the 7 pole connector truck end, part number PK12707 from Pollak.


Customer Reviews

Pollak Black Plastic, 7-Pole, RV Blade-Style Trailer Socket - Vehicle End - PK12-707E

Average Customer Rating:  4.7 out of 5 stars   (154 Customer Reviews)

Establish a secure connection between your towing vehicle and trailer with this 7-pole, RV blade-style socket. Black plastic socket has non-corroding, shock-resistant interior design that eliminates shorting out and is color-coded to RVI standards.

- PK12-707E
by:

Easy install, wire colors on plug do not match my truck. Other than that, it work as promised. 128324


Comments

The spring on the cover broke

norty - 04/30/2015

11279

- PK12-707E
by:

I bought this and plan to hook it up to a PC power supply to make a test harness for a Habitat for Humanity trailer I am restoring for them. I had done the welding, but need to fix the wiring and put new lights on it before I put on the new deck. I don't want to tie up one of their trucks for testing it so I am making a tester (helps to be an EE). The unit was inexpensive, but appears to be very well made. I was surprised that it has a real cable strain relief feature at this price. I would recommend that once you have it installed, you fill in the end with epoxy or silicon caulking to keep water out if you mount it under the bumper.. 231684



- PK12-707E
by:

The trailer socket received was exactly the right replacement part. It arrived very promptly and in perfect condition. It was helpful to have the tracking link so we could anticipate its arrival. Note: be sure to mount the wires in the correct alignment, otherwise a fuse will blow or you will experience an electrical arc between the socket pin and the trailer pin. The two alignment screws on each side of the socket hold the wire harness in position; the harness can inadvertantly be installed upside down if you are not careful to keep track of the correct wire alignment. 14799



- PK12-707E
by:

I ordered all the parts required to safely flat tow out 2017 Jeep Cherokee Trailhawk from etrailer.com. The only part they didn't have was the Mopar Flat Tow Enhancement kit Jeep requires to flat tow this model. Ordering from them was great, the website is easy to use and I was able to locate all the pieces compatible with my specific vehicle. The expert recommendations help my decision choosing the right parts. I ordered from etrailer even though I found some of the parts on other websites a little cheaper. I chose to pay a little more because of all the effort etrailer has put into installation videos and guides. I was very pleasantly surprised to learn from etrailer that they have a price match guarantee! So my equipment consisted of the following Mopar Flat Tow Enhancement Kit (from Jeep) Roadmaster Battery Charge Line Kit for Towed Vehicles Mighty Cord 7-Way RV Style Trailer Connector - Trailer End WesBarg 7-Way, RV-Style Connector w/ 6' Long Coiled Cable Trailer End Pollak Black Plastic, 7-Pole, RV Blade-Style Trailer Socket - Vehicle End Hopkins Custom Tail Light Wiring Kit for Towed Vehicles SMI Stay-IN-Play DUO Supplemental Braking System Roadmaster Brake-Lite Relay Kit for Towed Vehicles Blue Ox Alpha Tow Bar - Motor Home Mount - 6,500 lbs Blue Ox Base Plate Kit - Removable Arms Blue Ox Tow Bar Cover - Aladdin, Aventa LX, Aventa II The installation videos are great but not all inclusive. Take the time to read the instructions that come with the parts. This is a major project, I took about 30 hrs over a full week but as you'll see in the pictures I took s few extra steps to make a cleaner look. Some of those extra steps: The base plate install requires the bumper be modified cutting off a flange on each side, I spray painted this to prevent corrosion. In the install video of the baseplate on the drivers side they use an extra quick link (not included) to run the safety cable around the wiper fluid reservoir. I took the time to remove it and run the safety cable behind it. I didn't want our nice new vehicle to look like it can be towed so I played the brake away switch and 7 way trailer plug behind the license plate, so when not being towed our vehicle looks great! Some things to be aware of. The Brake air cylinder that mounts to the brake pedal with four bolts may need longer bolts, it did on our Jeep. Spend the money for weather tight heat shrink crimp fittings. The Hopkins wire harness was about 1.5 feet short to get to my plug location. Buy extra zip ties, electrical tape and split loom. I recommend reading all the various installation manuals and watching all the videos because the various components integrate together and if you install one at a time you'll be doing a bunch of extra work. The brake light relay is a real pain in the butt, not because of the hardware but because of the location of the brake light switch which is very hard to get to. Overall I am very happy with the products and how the installation looks. We haven't towed it yet but do not expect any problems. 413526


Comments

Still very happy with our purchase. We’ve towed over 10k miles and have had zero issues with our tow setup. I’ve shared my experience with several other RVrs and recommended your company for their needs. Thank you

Roy - 07/30/2018

41675

- PK12-707E
by:

Original connector only had small light weight spring for the door on the connector. This replacement is made much better than original. Door has double spring. Should last a long time 649782



- PK12-707E
by:

Great value and product 647882



- PK12-707E
by:

Product received in a timely manner. Product was exactly as described and what I need. 634893



- PK12-707E
by:

Had my local service station mount it to the front of my RAM 3500. Allows Electric brakes to release when pushing boat trailer into storage using front of truck. Technician added a separate switch to active backup lights. Works great. Thanks 629700



- PK12-707E
by:

Works Great 617122



- PK12-707E
by:

I ordered this item because the current one in use was damaged by a bumper drag and needed a replacement. After removing the old receiver and installing the new receiver I then went to plug in my trailer to verify that the plug was working. When plugging in the male end into the receiver two of the blade terminals pushed out the back of the new receiver. I pulled them back out with needle node pliers and tried again but they pushed back into the receiver again. I ended up having to use the internals of my old receiver and putting them into the new receiver housing. I was fortunate that it worked in the new housing. I can't get too upset because this is a inexpensive product. The housing was OK but the internals were cheaply made. I will not purchase this particular item again. First bad experience with an etrailer product. 614316



- PK12-707E
by:

Donna, thank you for your assistance, All products arrived,just as you described. Thanks again 613402



- PK12-707E
by:

This product works great and the company was great on updates and delivery very prompt ! I will definitely order from E- Trailer on my trailer needs . Thank you 602777



- PK12-707E
by:

little tight in holes but well made good screw ins for wires good overall performance 593091



- PK12-707E
by:

Fit perfectly 576605



- PK12-707E
by:

Works well. 570454



- PK12-707E
by:

Fast shipping as usual. Great people to do business with!! 567207



- PK12-707E
by:

Easy to order, fast delivery (even using the slow mode) and exactly what I needed. E Trailer is my "go to" site for all my towing needs. Thanks 563541



- PK12-707E
by:

The product was exactly what I was looking for. The price was excellent. I received it faster then I thought I would. The tracking process was awesome. I would definitely use them again. I highly recommend them. 561359



- PK12-707E
by:

just what I need....great service...tha nks 558683



- PK12-707E
by:

Received what I needed. They called when there was a slight delay in shipping to inform me. Top notch. 523594



- PK12-707E
by:

Working great. As advertised. Good co nnector 521586



- PK12-707E
by:

Good product, works as designed. 521549



- PK12-707E
by:

I have ordered many products from etrailer and have never had a complaint about any of their products or service. All orders have always been received in a timely manner, and in good shape. No complaints. I would definitely recommend buying from them. 517065



- PK12-707E
by:

Product arrived very fast . 496676



- PK12-707E
by:

Don’t need it. Reused original one. Seems to be good quality 489880



- PK12-707E
by:

Works great! Installed on my tractor in two locations to provide power to a trailer equiped with electric brakes.. 488183


Comments

Works great! Used connector on tractor to provide electrical output for electric brakes on a large utility trailer......

Clifton - 03/23/2019

50897

- PK12-707E
by:

In this case, the socket was required only because ours had literally worn out. I only use original parts if possible for installation ease and quality expectations. As always, etrailer had the correct part in stock and I received it in just three days. etrailer is always my first stop when searching for hitches or supporting accessories...good service, fast delivery. 487884



- PK12-707E
by:

Easy install 484628



- PK12-707E
by:

Put this in the bed of my new truck. So much better than the Hoppy I had in the last one. Brake connection much better with this one. Should have known better the last time!! 479113



- PK12-707E
by:

Fast shipping and great customer servic e. 473789



- PK12-707E
by:

As well as being a full service garage with many customers who have horses, whose trailers we service, we also rent trailers. We are always looking for businesses to buy our trailer parts from, that offer competitive pricing. Was very pleased with the service we received from etrailer. Fast delivery of product, at a decent price 473225



- PK12-707E
by:

My old Pollak sockets cap cracked within two yrs after install , I was very pleased that this new Pollak cap was a lot thicker with a heavier spring , installation was easy good buy for the price. 464467



- PK12-707E
by:

I keep one of these in every truck just in case we have a problem. I really lke the plastic ones, they prevent shorts. 452309



- PK12-707E
by:

Updated slide in truck camper plugs. Fast shipping, accurate description, and great price. 418601



- PK12-707E
by:

ok 413017



- PK12-707E
by:

Great product, excellent delivery time. 398885



- PK12-707E
by:

Shipped quick 392291



- PK12-707E
by:

Bought this to replace a broken OEM connector. Fit perfectly and was easy to wire. Good solid Pollak product. Price was lower than any other site I visited. Will definitely shop here again. 381453


Comments

Still working fine

Steve M - 05/17/2018

38575

- PK12-707E
by:

Good quality for the price 381238



- PK12-707E
by:

This product has worked well for us with no problems. 378174



- PK12-707E
by:

Have used this trailer socket before and never had a problem with it. 373932



- PK12-707E
by:

A bit difficult to wire, but the final outcome looks and tests good the real test will be once I begin using in in real life situations. 365397



- PK12-707E
by:

Excellent 366387



- PK12-707E
by:

Perfect replacement for my present connector. Spring broke on the other one. Videos on the eTrailer site were very helpful. HmS 358836



- PK12-707E
by:

great fast thanks 347635



- PK12-707E
by:

very pleased with product,thank-you!!!! !!!!!!!!!!!!! 346511



- PK12-707E
by:

Just as it was described. 346509



- PK12-707E
by:

I ordered this connector to replace the factory installed one on my motorhome. It was a perfect fit and much better quality than the original. Watching a video supplied by George at etrailer.com gave me the knowledge of the proper way to make the replacement. Thanks etrailer for providing outstanding service & communication. 346094



- PK12-707E
by:

Always use Pollak wiring products. Excellent quality and service life. 339965



- PK12-707E
by:

work great. exactly what I expected and needed 338870


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155
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Ask the Experts about this Pollak Wiring
Do you have a question about this Wiring?


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  • In order to determine the correct function of the wires that are included with the Ford Replacement OEM Tow Package Wiring Harness part # 118242 you are going to want to plug the harness into the vehicle and have a friend sit in the cab and operate the signals while you are testing them with a circuit tester like part # ALL640595. It does not appear that the wires leading into the USCAR connector follow the RV standard 7-way wiring colors exactly. In order to replace the USCAR connector...
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  • The longest 7-way sealed connector for the car end we currently have is the Bargman # 50-87-009 which is a 9 foot long pigtail. For a longer wire, you can use the Pollak Black Plastic, 7-Pole, RV Blade-Style Trailer Socket - Vehicle End # PK12-707E along with the Deka Wire - Jacketed 7-Wire - per Foot # DW04914-1. This will allow you to customize the length needed.
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  • 7-Way to 4-Way Adapter Recommendation for Pollak 7-Way
  • The Pollak 7-Way part # PK12-707E is a standard 7-way so for a 4-way adapter to fit it you'd just want the Buyers Products # 337TC2074P and you'd be set.
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  • Fifth Wheel Wiring Harness for 2015 Chevy Silverado 2500
  • I believe what you are looking for is the Hopkins Endurance 5th Wheel/Gooseneck # 41157. This is a plug-in which will allow you to run a 7-way to your 2015 Chevy Silverado's truck bed. I have added a link to this part being installed on a 2015 Chevy Silverado 2500 for you to take a look at.
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  • How to Make 7-Way Blade to 7-Way Round Adapter for Tractor Trailer to Use Curt Echo
  • Your heavy duty style 7-way is different than the 7-ways we normally see for two reasons. One reason is that the stop lights and the turn signals are on different circuits and because the 7-way uses round pins instead of flat blade style connectors. On the chart that you attached you don't have a dedicated brake output signal (probably because your vehicle normally tows air brake trailers) but you do have an extra NA circuit that you could use a brake controller with. To use the Curt...
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  • Why Do Some 7-way Plugs Use Dual Contact Surfaces
  • A 7-way (female) vehicle socket like # PK12-707E has a single blade contact; these fit in between the dual contact surfaces in a (male) trailer plug like # 54006-059, # 277-000143 or # A10-7W10 and the connector (type BB) shown in your photo. Some 7-way male plugs will use a single blade contact, such as the plug on Hopkins 7-way extension # HM20049. This item's female socket and male plug happen to both use the single contact. Both types are compatible with each other. The Bargman...
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  • Wiring Harness for Flat Towing 2004 Jeep Wrangler
  • We can help you get set for flat towing your 2004 Jeep Wrangler with your motorhome but we do not offer any wiring adapters for an 8-prong motorhome socket. Most motorhomes these days use a 7-way blade style connector like the one shown in the linked photo. You can convert the MH to a 7-way using a part like # 37185 or # PK12-707E. You'll just need to match up the functions; a circuit tester like # 40376 makes this easier. We do have a plug-in flat towing harness for your 2004 Wrangler,...
    view full answer...

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  • To combine the brake lamp and turn signals combined on one circuit, you'll need a taillight converter like part # 119190KIT. You'd also need an adapter, constructed from # PK11700 and # PK12-707E and a length of # DW04914-1 cable.
    view full answer...

  • Towing a Trailer with Electric Brakes with a Semi Tractor with Air Brakes
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  • How To Change a Vehicle 7-Way Connector to a 6-Way Vehicle Connector
  • If you are trying to change the 7-way connector on your vehicle to a 6-way round connector you can use the Hopkins Adapter, part # 47549. This adapter will plug into your existing 7-Way and give you a 6-Way round connector. The center pin of the 6-Way side of this adapter is setup as the 12 volt power lead, but it can be changed if you need the center pin wired as a brake lead. If you were needing to change to a 6-Way square connector, you can use the above # 47549 adapter and add...
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  • New Tow Bar and Baseplate For Towing a 2007 Jeep Wrangler with a 2009 Tundra and Fleetwood Motorhome
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  • How to Make an Adapter to Go from Semi Truck 7-Way Round to RV Style 7-Way Blade on Trailer
  • Either way is correct. It depends on if you want to keep the semi-style 7-Way (if you need to tow that type of trailer) or if you will never be towing a semi trailer. If you need to keep the 7-Way semi active on the truck then you would need to make an adapter to get it to work with an RV 7-Way. For that you would need a trailer side 7-Way round, # PK11702, a converter, # RM-732, and a vehicle side 7-Way RV style, # PK12-707E. A semi-7-Way has separate circuits for the brake lights...
    view full answer...

  • Wiring a Pollak 7-Way Connector on a Fleetwood RV
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  • How to Make 5 Foot Long 7-Way Round to Blade Adapter
  • What you could do is make an adapter. You would need 3 main parts: 7-Way round trailer side, # PK11702, 7-Way blade vehicle end, # PK12-707E, and 4 or 5 feet of jacketed 7-Wire, # DW04914-1. Just change the quantity on the wire page to the amount of feet you want.
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  • Can Pollak 7-Pole RV-Style Trailer Socket # PK12-707E Power 500-Watt Inverter
  • My contact at Pollak advised that their 7-Pole RV-Style Trailer Socket # PK12-707E has a maximum DC current rating of 35-amps at 12 volts. Therefore it should have enough capacity to power your 500-watt inverter. You can check your vehicle owner's manual or with your dealership to determine if the vehicle wiring has the capacity you require.
    view full answer...

  • Installation of 7-Way Connector on a 1997 Ford F-350
  • I am including a link to a FAQ page on trailer wiring. It will show the 7-Way trailer connector functions and the 7-Way vehicle connector functions. At the bottom of the page is a chart that will list the wire colors by vehicle manufacturer. This chart is only a guideline because the vehicle manufacturers can change the wire colors over the years. I would recommend to use a circuit tester like part # 40376, and test the wires for function on your 1997 Ford F-350. If your F-350 has...
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  • How to Replace a Euro 7-Pin on a Trailer and Tow Vehicle with Standard 7-Way
  • For your Land Rover Defender, you can use the Trailer Connector Adapter for Land Rover part # 118710 which will plug into the euro 7-way on your Defender and give you a standard 4-flat trailer connector. Then for the trailer you can easily install the Hopkins Endurance Quick-Fix Replacement 4-Way Flat Trailer Connector part # HM48192 which will attach directly to the adapter that was just installed on the tow vehicle. This setup will be perfect for trailers that have the standard running...
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  • Trailer Brakes do not Work After Replacing 7-Way Connector on a PJ Deckover Trailer
  • The first step that I would recommend when troubleshooting this issue is to check all of your connections again. More often than not, when the wiring on a trailer is altered, connections can come loose or bend, pinch or fray. I would recommend checking each connection point on the brake circuit to look for any bent, pinched, frayed or exposed sections of the wire that could be causing a short or a stop in the circuit. If you have power on the brake circuit going into the junction box,...
    view full answer...


Do you have a question about this Wiring?




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Info for this part was:

Installed by:
Jeff D
Expert Research:
Jameson C
Expert Research:
Adam R
Installed by:
Cole B
Photos by:
Sam P
Written by:
Sarah W
Updated by:
Hannah L

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