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Pollak Black Plastic, 7-Pole, RV-Style Trailer Connector - Trailer End

Pollak Black Plastic, 7-Pole, RV-Style Trailer Connector - Trailer End

Item # PK12706
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Pollak Trailer Connectors - PK12706
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This standard, RV-style, 7-pole connector provides a secure connection between your trailer and tow vehicle. Black plastic construction prevents rusting, enhances appearance and makes plug removal a snap. Lowest Prices for the best wiring from Pollak. Pollak Black Plastic, 7-Pole, RV-Style Trailer Connector - Trailer End part number PK12706 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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Pollak Wiring - PK12706

  • Trailer Connectors
  • Trailer End Connector
  • 7 Blade
  • Plug Only
  • Pollak

This standard, RV-style, 7-pole connector provides a secure connection between your trailer and tow vehicle. Black plastic construction prevents rusting, enhances appearance and makes plug removal a snap.


Features:

  • Standard, 7-pole plug connects trailer to socket on tow vehicle
  • 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 pin accepts up to 8-gauge wire
    • Vinyl inserts keep out dirt and moisture
  • Dual grips
    • Promote easy removal of plug from socket
  • Safety latch
    • Ensures connector is plugged into socket
  • Color-coded to RVI standards


Specs:

  • Wire gauges:
    • Red, brown, green, and yellow: 14 gauge
    • Blue: 12 gauge
    • White and black: 10 gauge
  • Wiring configuration:
    • Blue: electric brake
    • Green: tail lights
    • Red: left turn signal and brakes
    • Brown: right turn signal and brakes
    • Yellow: auxiliary and reverse lights
    • Black: battery
    • White: ground wire
  • 1-Year warranty


7-Way Trailer Diagram


12-706 Pollak Black Plastic, 7-Way, RV-Style Trailer Connector - Trailer End
Replaces 30305; 118021






Customer Reviews

Pollak Black Plastic, 7-Pole, RV-Style Trailer Connector - Trailer End - PK12706

Average Customer Rating:  4.7 out of 5 stars   (380 Customer Reviews)

This standard, RV-style, 7-pole connector provides a secure connection between your trailer and tow vehicle. Black plastic construction prevents rusting, enhances appearance and makes plug removal a snap.

- PK12706
by:

Parts work gread! I use this one with a receptacle on my Kubota tractor for powering my utility trailer electric brakes and for an auxiliary power outlet for my 16 gallon electric sprayer



- PK12706
by:

do not follow the labeling on the back of the plug the colors do not match. had to do a google image search for a pin out of a trailer plug.


Comments
Thank you for your review! You do bring up a good point. While the wiring setup displayed on the connector is the most common wire colors, it is important to note that some instances can vary so you want to connect the wires by function rather than colors. The function diagram is listed in the photos above as well as this attached helpful article for you to check out.
-- Etrailer Expert Jon G - 03/26/2021


- PK12706
by:

Using this product to replace inputs from a straight-4 hookup plus add'l wires from a supplemental light system for my truck. Works exactly as advertised; saves me a lot of hassle. Installer must have some rudimentary electrical-connection knowledge. You must also know which of the seven contacts does what for your vehicle to install this correctly; should be in your car/truck's manual. Four instead of 5 stars just because the entrance/exit hole for wires needs supplementation to make it water-tight. Product is easily worth the money and functions exactly as one would expect.



- PK12706
by:

Product is just what we ordered. Service from E trailer not so good. It took 11 days to receive this product from E trailer. New will order from some where else next time.



- PK12706
by:

I was having connection issues with a new tow vehicle and our Airstream. The molded connector on the Airstream apparently just wasn’t making a great connection. Cut that one off, put on this Pollak connector, and for the past year haven’t had a single issue. Well worth the effort to replace the original one with this one.



- PK12706
by:

After a few purchases my experience tells me buy direct from etrailer they are less expensive than [online store], you get great products can find anything you need for trailer parts



- PK12706
by:

I have this same plug (PK 12706) on the Boat Trailer and it works perfect, and never disconnects or shorts. Now I'm putting this same plug on the Snowmobile Trailer. I'll let you know if I have any problems. Anything to do with trailer issues I always contact eTrailer Company first. Thanks, Ron



- PK12706
by:

I appreciate being able to buy this plug by itself. Just what I needed. Thank You



- PK12706
by:

Good replacement plug. Easy to install. Great value.



- PK12706
by:

This product solved a chronic error message displayed on my 2017 Chevy Tahoe when connected with other brand trailer connectors. Positive fit and well made product.


Comments
About 4K towing it continues to function flawlessly
Gary C - 08/30/2020


- PK12706
by:

Good connector and good price. Quality it very good.



- PK12706
by:

The color printed on the post didn't line up. wired it up like plug showed and didn't work. I went ahead and did it one by one with a meter and know it works can only give this one stars. My truck has been hauling 5th wheels and travel trailers and varies other trailers with NO problems what so ever so I know it wasn't my truck. All in All the product did work maybe I got just got the bad one won't stop me from buying from etrailer


Comments
There are a couple different color codes for trailer wiring, so its recommended that a trailer connector be wired by function, not wire color. Ill link to a help article that shows the two most common color codes.
-- Etrailer Expert Mike L - 05/22/2018


- PK12706
by:

Looks like a quality part. Appears to be well built.



- PK12706
by:

Perfect replacement for run over trailer plug at a great price!



- PK12706
by:

That's the end of the cord.



- PK12706
by:

The quality is good with and I am happy with that. Just do not follow the wiring labels on it. Half the listed colors are incorrect. I made the mistake and had to rewire after going to etrailer website instructions and getting the correct wire locations. Works good now though. Other than that very happy with it.


Comments
The colors on this plug are for RV Industry Standard wiring. Traditional Wiring colors are different. That said, the individual terminals are in the same order as far as which terminal goes to tail lights, which terminal goes to right turn signal, etc., regardless of which wiring colors are on your existing harness. Now if only the person who converted the wiring on my sisters horse trailer to 6 blade 7 terminal had followed the color codes of either..... That however, will be corrected this Friday!!!!
-- comment by: Bill J - 08/05/2014

Thanks for the info, and this is exactly why we recommend using a good circuit testers and testing all the wires for the function. Then connect according to the function of the wiring, not by color.

-- Etrailer Expert Rachael H - 8/7/2014


- PK12706
by:

Replaced a broken connector, exact fit.



- PK12706
by:

Nice replacements to have on hand as the connectors will be the first item to get ground in half from dragging the road when friends borrow your trailer:)



- PK12706
by:

Just what I was looking for.



- PK12706
by:

This is my third order which speaks for itself. Best Customer Support, order handling, shipping expediency, packaging , price and product quality. Lori B took my order over the phone. She was very courteous, knowledgeable and strongly represents the Companies Customer Service Policy. Looking forward to Order #4...Wentzville, Mo., (The Show Me State) and they sure showed me.



- PK12706
by:

Got my new/used trailer rewired and my '16 Silverado started throwing "check trailer wiring" code ! Trough much research and googling the code I found the factory used the POLLAK 7 pin receptacles . And some 7 pin plug makers were not up to OEM standards . They fit sloppy . So until my new end came I wrapped the sloppy end with electric tape for a snug fit bent tabs out slightly and greased with dielectric grease . That stopped code . When the new end arrived I changed it and seams the problem is solved .



- PK12706
by:

I have never had a bad experience when dealing with this company! Highly recommended...



- PK12706
by:

It’s working just fine after a year of use.



- PK12706
by:

Haven’t used it yet but I know it will work fine. Thanks.



- PK12706
by:

Good plugs. Do just what they should. There are two types of 6 way com to 7 way RV adapters. One with the center post to brakes, the other, brakes circuit to a side post. Not sure which way these a wired but one should be aware of this. RV standard is brakes to the side.


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Show More Reviews

Ask the Experts about this Pollak Wiring

  • Parts Needed to Install a 7-Way on a 2000 Jeep Cherokee
    First you will need to install the Tow Ready Wiring harness part # 118354 that you referenced. Now if all you need is taillight functions then to convert to a 7-way you would only need a Adapter 4 Pole to 7 Pole # 37185. If the 98 Dutchmen camper has trailer brakes you will need a brake controller and instead of the # 37185 you would need a Universal Brake Controller Installation Kit part # ETBC7. This kit comes with everything needed to install a brake controller and install the included...
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  • Availability of a Wiring Diagram for a Gooseneck Trailer
    The diagram on our wiring page, which you were on, shows the typical wiring for a trailer no matter the style of connector. If you have a 7-Way connector on your Ford and are trying wire the gooseneck to match the truck there are photos farther down on the page to show where each connection should be made inside the 7-way connector, item # PK12706, for the trailer end. There are also diagrams for the 6-Way connectors. If your trailer has alternate wire colors then you will need to use a...
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  • 2020 Chevy Colorado Trailer Connector Wire Gauges
    The part you mentioned is a actually manufactured by Pollak, which we sell as part # HM40975. If your Colorado has the factory tow package featuring the US CAR connector under the rear of the vehicle, it would plug directly into the # HM40975. If you don't have the factory tow package you can still install that connnector, but the US CAR connector won't be present and you'd need to hardwire it using # HM40975-11998, which provides both the pigtail and the connector. The wire colors/gauge...
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  • Instructions for Completely Rewiring a 14 Foot Tandem Axle Dump Trailer
    Rewiring your 14 foot dump trailer is pretty straight forward. I would start with a 20 ft. Wishbone 4-Way Trailer Wiring Harness, # A20WB, to provide wiring for the stop turn and tail lights on your trailer. We have a video detailing how to install this type of harness for you to review, see link. Next, I would use the RV-Style Trailer Connector, # PK12706, and remove the 4-Way connector from the 4-Way harness and install the wires in the proper locations in the 7-Way connector. Our...
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  • Parts Needed to add a Battery Charge Wire to a Trailer with a 4-Pin Connector
    It sounds like you may have a 7-way trailer connector and a 4-way trailer connector on your truck and only a 4-way connector on your trailer. Is that correct? See the attached picture for examples of each. If this is the case, then this change will be pretty easy. All you will need to do is cut off the 4-way connector on your trailer and add a 7-way, # PK12706, and the appropriate length of 10 gauge wire, # 10-1-1. This will provide your trailer battery with a constant maintenance charge...
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  • Powering my Trailer Dome Lights Through my Vehicles Wiring
    You can absolutely power your trailer from your vehicles battery. You can use the Pollak Black Plastic 7-Pole Trailer Connector part # PK12706 and run a wire from the 12 volt power position to the power wires you are looking to power. As a better solution or at least one I find much easier. The etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector part # e99011 allows you to connect your current trailers wiring inside this clean and neat weather resistant box....
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  • How To Get The Trailer Dome Lights Working On My Enclosed Trailer Connected To A 2010 Ford F150
    If you are looking at the front of the 7-Way connector the # 4 terminal which is at the 1:00 position will be the 12 volt power connection. If you do not have power run to the # 4 terminal on the 7-Way vehicle connector you will want to run a 10 gauge wire like the #10-1-1, from the positive post on the vehicle battery through a 40 amp circuit breaker like the # PK54540, to the # 4 terminal on the vehicles 7-Way connector. This will give you 12 volt power to the 7-Way. You will then...
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  • Wiring a 7-Way Connector for a Dome Light In a Enclosed Trailer with a 4-Way Connector
    If your truck has a 7-Way connector from the factory the #4 connection in the 1 O-clock position will be the 12 volt power connection. We have diagrams of the vehicle side and trailer side 7-Way connectors on our wiring page that will show you where to connect the 12 volt battery lead. You will need to run a 10 gauge wire, item # 10-1-1, from the positive post on the vehicle battery through a 40 amp circuit breaker, item # PK54540, to the proper connection point, #4, in the vehicle side...
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  • Trailer Brake Warning Messages On 2019 Ram 2500
    I have not yet personally heard of this issue on the 2019 Ram 2500 but the error messages you are describing sound like the trailer connection point is not very secure and bumps in the road are causing the pins to lose contact with the terminals. The solution I have for you would be to first check over the trailer wiring for any shorts but if none are found then I recommend replacing the trailer connector with the Pollak Black Plastic, 7-Pole, RV-Style Trailer Connector part # PK12706 and...
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  • 7-Way Wiring Harness for 16-Foot Trailer
    We can help you with a replacement 7-way trailer harness for your 16-foot trailer. All such items are shown on the linked page. These include plugs-only, such as # PK12706, which uses your trailer's existing wiring; pigtail plugs like # 50-67-005 that are available in many lengths; and also complete units like # e99011 which is a 7-way plug with cable and wiring junction box. If you are referring to a replacement 7-way socket for your 2006 Nissan Titan then you can use # C55774 from...
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  • What Gauge Wire Is Required On a 7-Way Connector
    On a 7-Way connector the suggested minimum wire gauge for the White (ground) wire, the Red or Black (power) wire, and the Blue (brake power) wire is 12 gauge. The minimum wire gauge for the remaining Green (right turn/brake) wire, the Yellow (left turn/brake) wire, the Brown (tail lights) wire, and the Purple (reverse light) wire is 16 gauge. I have the Hopkins 7-Way Molded Trailer Wire Connector with Lead, part # H20042. This is a 7-Way blade plug on one end and a 3 foot wire lead....
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  • How to Activate Trailer Brake Output and Trailer 12 Volt Circuit on a 2013 GMC Yukon
    The two circuits you referenced will need to be connected under the hood of your 2013 GMC Yukon. If you check out the help article I attached you will see exactly how to do this. This article also covers how to install a brake controller which it sounds like you are looking to do. For a brake controller I would recommend the Prodigy P2 Brake Controller part # 90885. This is our best selling brake controller because of how well it works and how easy it is to setup. This is a proportional...
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  • How to Make 7-Way Adapter for Scooter Lift to Plug Into 7-Way on Honda Ridgeline
    The adapter part # PK12716 that you referenced only carries turn signal circuits so while I have a solution that would work, this would not be it. Instead you would want to wire the scooter lift power wires to a 7-way like part # PK12706. The ground circuit will be the pin in the 5:00 position and the 12 volt power would be in the 11:00 position.
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    We do offer 4-pole wishbone wiring harnesses like # A35W42B and jacketed 4-pole wire such as # DW04923-1. We do not have a jacketed wishbone 4-pole trailer harness but you can certainly provide protection to a 4-pole wishbone harness - and keep the ability to run the separate running light wires to each side of the trailer - by using wire loom like # 39035 which is sold in 10-foot lengths.
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  • How to Wire a Trailer and Vehicle Side 7-Way Trailer Connector
    You cannot go by wire color in most cases because there is no real standard. We have blue for trailer brakes, yellow for left turn/brake lights, brown for running lights, green for right turn/brakes, black for 12 volt power, white for ground, and purple for reverse or AUX power at the center. Since your lights are not working something must not be in the right spot. What you can do is touch each wire to the positive terminal of a separate 12 volt battery and see what lights up. Then...
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  • How Does 4-Way Wishbone Trailer Wiring Work and Install
    You have what is called a wishbone harness like # A20WB. This type of harness take the running light circuit and splits it at the trailer connector so that you do not have to run a jumper wire from one tail light to the other. The yellow/brown wire is the running light circuit for the driver side. The green/brown wire is the running light circuit for the passenger side. Either of these wires will carry the running lights for the trailer, they are just split to make it easier to wire...
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  • Troubleshooting Voltage Drop on Electric Brake Wire on Trailer with New Wiring
    The first step I would take is to replace the 14 gauge wire for the electric brakes with either 10 or 12 gauge wire. It is not recommended to use wire smaller than 12 gauge on electric brake and battery charge circuits on trailers. The smaller gauge wire should not cause a significant voltage drop by itself, but it could easily overheat and cause problems in the future. The next step would be to inspect your ground connections. Be sure everything is grounded to a clean, bare metal surface....
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  • Adding 7-Way to Trailer with Yellow Wire Instead of Purple
    Most likely the yellow wire on your trailer is what carries the reverse or auxiliary power circuit and would be connected to the center pin of the 7-Way like # PK12706. This would line up with standard 7-Way wiring for a 5th wheel or travel trailer. I have attached an image to assist. With that being said it's still a good idea to test the wires for function as it's very possible a previous owner or even the manufacturer could have used non-standard color wiring. You can apply 12V power...
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  • Adding a Brake Controller to a 2008 Honda Ridgeline with 5-Way Trailer Connector
    If your 2008 Honda Ridgeline did not come with a factory 7-Way and you are not having the OEM 7-Way installed by a Honda dealer then what you will do is hardwire in a brake controller using # ETBC7. If the brake controller harness under the dash is fully functional then what you would do instead is use # 37185 and wiring kit # 5506. You would plug in the brake controller like normal but you would remove the blue wire from the end that plugs into the truck and instead attach it to one...
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  • What are Correct Functions for a 7-Way Connector on a Walton Dump Trailer
    That is an interesting looking plug. I do believe that it is a 7-Way, like the Pollak # PK12706 that you referenced, because a 6-Way typically has round connectors and one of them is in the center, like part # PK11604. The center pin is typically used for the reverse light function so if your trailer is not equipped with reverse lights then not having that center pin connected to a circuit isn't a big deal. The rest of the functions will look like the attached photo and are as follows: 1...
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    Image 1 for Image 2 for
  • Recommendations For 7-Way to 5-Way Trailer Wire Adapters
    You can install a 7-way trailer plug on the trailer and only wire the 5 circuits you need based on our FAQ page on wiring, which I have provided a link to. If you go this route, you will need to trace each circuit on the trailer to determine its function and then wire it to the plug accordingly. I have provided a graphic showing the function of each individual circuit on the 7-way trailer plug. You also might need a new adapter to connect your 7-way plug on your vehicle to the 5-way...
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    Image 1 for
  • 2015 R-Pod RP179 Rear Light Always Illuminated Without Battery Connection
    It sounds like the rear light on your 2015 R-pod Rp179 wiring is somehow touching wiring of something else that is attached to the battery on your trailer. Since LED lights require such little draw to illuminate then any cross of wires that are connected to the battery could power the rear LED light. Most of the time the only way to fix this is too disconnect the battery on the trailer.
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  • How to Power Trailer Dome Light When Not Connected to Tow Vehicle
    The only way you could power interior dome lights on a trailer without it being connected to a tow vehicle would be to power the lights with a battery like a breakaway battery. How you choose to wire up the batteries will in the end be up to you, but since breakaway batteries need to be charged up when you are towing I would be careful not to drain the battery with the dome light.
    view full answer...
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  • Can 7-Way Trailer Plug be Wired with Separate Brake Light Circuit
    There isn't a standard way to wire up a 7-way like part # PK12706 with a separate stoplight, but the center pin is typically an auxiliary or reverse light circuit that you could use as the stoplight if no reverse light is needed.
    view full answer...
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  • How to Open Pollak Black Plastic, 7-Pole, RV-Style Trailer Connector PK12706
    On the top of the trailer side 7-Way connector # PK12706 there is a small set screw. Use a small flat blade screwdriver to loosen the set screw. It does not have to come all the way out. Once the set screw is loose you can use the screwdriver to push the face of the connector out from the back. You would then run the wiring through the back, make the connections to the terminals on the face part, then push the whole assembly back into the body of the connector. Tighten the set screw...
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  • Connecting 4-Way on 1987 Chevy Truck to 7-Way on Trailer
    If I am understanding correctly you are attempting to hook up the 4-flat on your 1987 Chevy to the 7-blade on your trailer and to do that you simply need adapter # 30717. In regards to the connection, the colors are going to differ a bit based on the style of connector you have; for example the Pollak # PK12706 is an RV style connector which has the following functions: Blue: electric brake Green: tail lights Red: left turn signal and brakes Brown: right turn signal and brakes Yellow:...
    view full answer...
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  • How to Inspect Ground Circuit of Trailer Wiring
    Trailer lights ground in a couple ways. Sometimes they ground through the mounting hardware which basically means it's ground through the trailer frame to the ground wire of the 7-way connector or they lights are grounded with a wire that runs back to the trailer connector directly. Since the stoplight/turn signals aren't working it's most likely related to the main ground harness of the trailer connector. On the connector in the 5:00 pin position is the ground circuit. Make sure it's connected...
    view full answer...

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