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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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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 800-298-8924 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   (290 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:

This product was recommended by my GMC dealership for a better connection between vehicle and trailer. I was having many trailer wiring disconnected alarms, which led to my Truck being serviced to find the fault. The Pollak product is very different from the original trailer connection. This appears to be a problem with the newer GMC trucks. 504498



- 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 . 312561



- 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. 449544



- 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. 137963


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

6077

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.

-- Rachael H - 8/7/2014


- PK12706
by:

Wires matched my 5th wheel . I did cut into my molded plug and exposed all the old terminals to verify location and color just to be sure. Works very well in bed mounted. 7 way plug that I also got fro etrailer. 634836



- PK12706
by:

This plug I am keeping as a spare. With luck, I will not need to install it. I did inspect it and, believe it to be good quality. 575855



- PK12706
by:

Very good product and fast delivery 837442



- PK12706
by:

This connector fit my trailer exactly and was promptly shipped. James A was very professional and polite. He also helped me find the correct rear tie downs for my new super hitch and they also worked great. Thanks James! 825286



- PK12706
by:

It would be great if a standard color-coded and descriptive wiring diagram was included with it. 821382



- PK12706
by:

Great price on a quality part. 809402



- PK12706
by:

works great. gets a lot of use on my car trailer & holds up perfectly. 812012



- PK12706
by:

Exactly what I needed and very quick shipping. Wonderful customer service. Thank you! 803608



- PK12706
by:

I have ordered several items from etrailer over the years, from leaf springs, to tail lights, hitch receiver and connectors. Always happy with quality, price and speed of delivery. 803653



- PK12706
by:

good quality product, fast and pleasant service 797553



- PK12706
by:

Fits my 2016 F350 without wobbling. Don't get a trailer disconnected warning since I changed it on my new PJ Dump Trailer 797411



- PK12706
by:

Took a chance on this one, and it worked. I just purchased a 2019 Frontier that came with a towing package. I needed the plug to convert my trailers from flat 4 to this for towing. Fits perfectly. 786116



- PK12706
by:

Bought it to replace an old broken one. Works great. 786058



- PK12706
by:

Well made and the price was great compared to the auto parts stores near me ! 775516



- PK12706
by:

I have always been happy with the items from etrailer and intend to continue buying their products 773613



- PK12706
by:

works good 764635



- PK12706
by:

GREAT PRODUCT 751365



- PK12706
by:

As advertised 747283



- PK12706
by:

Absolutely no problem installing. 745105



- 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. 727872



- PK12706
by:

Easy to wire. Works great. 724646


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Ask the Experts about this Pollak Wiring

  • How to Determine if 2 Brown Wires on Trailer with 7-Way are Used for Running Lights
    It is very likely that the wiring on your trailer has 2 Brown wires which carries the running lights on either side of the trailer like the wishbone style harness # A35W42B from Optronics does. You will want to verify this before connecting them to a replacement 7-Way though. You can do this by using a 12V battery, like what would be in your truck, and ground the negative terminal while using the positive terminal to test both Brown wires to see what light function they carry. If...
    view full answer...
  • 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...
    view full answer...
  • 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...
    view full answer...
  • 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...
    view full answer...
  • 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...
    view full answer...
  • 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...
  • 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....
    view full answer...
  • Installing Additional Brake Light to Mount on Kayak that Overhangs Trailer
    First, to replace the 4-way connection on your trailer with a 7-way, you can use the Pollak Black 7-Pole, RV-Style Trailer Connector - Trailer End # PK12706. You will just cut the wires on the existing 4-way and splice them into this connector. Then to add the connections needed on your trailer to use the Optronics Thinline LED Trailer Tail Light # STL59RB as a portable option for use at night, you can use a vehicle end 4-Pole Flat connector like the Hopkins # HM48035 that will come...
    view full answer...
  • 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...
    view full answer...
  • Troubleshooting a 5th Wheel Trailer with Strange Tail Light Behavior
    To me it sounds like the wiring of the trailer connector that is on the trailer is the problem, I have had similar bizarre behavior like that with trailers and it turned out to be that circuits were getting shorted to each other and it made the tail lights behave strangely. I would recommend that you take a look at the trailer side connector and look for corrosion and loose wiring and fix as necessary. You may also want to check to make sure that the connector has the correct pin placement...
    view full answer...
  • Wiring Reverse Lights to 7-Way Trailer Connector
    The middle pin on a 7-way trailer connector such as the Pollak Black Plastic, 7-Pole, RV-Style Trailer Connector - Trailer End # PK12706 is going to be the reverse light circuit. Or you can use the Mighty Cord 7-Way RV-Style Trailer Connector w/ Molded Cable - Trailer End - 6' Long # A10-7W6 and in the case of this connector it will be the yellow wire which you connect your reverse light wiring to. All you need is Heat Shrink Butt Connector # DW05745-5. I have added a link to a help...
    view full answer...
  • 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...
  • Instructions to Wire Dump Trailer with Electric Brakes
    I would use the RV-Style Trailer Connector, # PK12706, which you reference, and install the wires in the proper locations in the 7-Way connector. Our wiring page, see link, has photos that detail the wiring configuration of the 7-Way RV trailer connector for you to check out. You will need to test the functions of each wire using a 12 volt battery to determine their function. Once you know the function, you can use our trailer connector wiring diagram to make the proper connections.
    view full answer...
  • 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....
    view full answer...
  • 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 # 277-000141 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...
    view full answer...
  • Trailer Wiring Diagram for a Trailer Side 7-Way Connector
    First, you can almost never go by color as there is no real industry standard. You have to go by function when adding a new 7-Way. I have included a picture that shows the trailer side connector and how it should be wired. Ignore the colors, you will need to trace the wiring back to determine the functions. The corrosion in the bulb sockets and on the bulbs should be cleaned out if at all possible. Corrosion could lead to poor performance down the road.
    view full answer...
  • 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...
    view full answer...
  • Are Trailer Coupler Mounting Holes The Same And Is A Brake Controller Needed For Electric Brakes
    The standard, basic straight tongue coupler I have that will fit a 3 inch channel, and a 2 inch ball with a 6,000 lbs. weight capacity is the Fulton Fast-Lok Coupler with Cast Ball Clamp, 2 Inch Ball, 3 Inch Channel - 6,000 lbs, part # F346000301. It has the 3 inch spread between the side mounting holes. As long as the tongue has not been modified the distance from the front of the channel to the first hole will be the same on all of the bolt-on couplers. When your trailer has electric...
    view full answer...
  • 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...
    view full answer...
  • 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...
    view full answer...
  • Installation of Pollak 7-Way Plug with 6 Colored Wires
    The Pollak Black Plastic, 7-Pole, RV-Style Trailer Connector - Trailer End # PK12706 will match the colors and locations of the attached photo. I've also attached a wiring article to assist further if the colors don't match functions correctly so you can be sure to match the functions.
    view full answer...
  • 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...
  • Parts to Make Dual 7-Way Extension for Motorhome That is Flat Towing
    It sounds like you need an extension with two 7-blades on it, but in order to do this you will need to get a plug and lead as well as a plug. So you will need the 7-Way Molded Trailer Wire Connector # H20043 (4 feet long) or the coiled Bargman # WG54006-043 (6 feet long) and will need to wire in the Pollak Black Plastic, 7-Pole, RV-Style Trailer Connector # PK12706. You can match the colors of the wires on the 7-way to the pins of the plug to make it very simple. I have added links to...
    view full answer...
  • 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...
    view full answer...
  • Removing Old Plug and Installing 7-Way Trailer Connector # PK12706
    If you cannot access the pin terminals inside your 7-way trailer connector, you can simply cut the wires at the back of the plug. I would actually recommend cutting off the old plug if the plug has a lot of dirt and corrosion. Often times, dirt and corrosion can make its way into the 7-way plug and begin to corrode the wires. By cutting off the plug, you will have clean wires to attach to the new 7-way plug.
    view full answer...
  • 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...
    view full answer...
  • Troubleshooting Trailer Brakes After Installing a New 7-Way Trailer Connector
    As long as your 7-way trailer connector was wired as shown in the attached diagram, the auxiliary power wire should not have any affect on the electric brake output wire. The first step I would take is to test the vehicle side 7-way socket to make sure power is reaching the trailer connector. Using a circuit tester like part # 40376, test the pin in the 5 oclock position (see photo) on the vehicle side 7-way. Apply the manual override on your brake controller to send power back to that...
    view full answer...




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Info for this part was:

Expert Research:
Mike L
Expert Research:
Sarah L
Expert Research:
Robert G
Expert Research:
Michael H
Expert Research:
Jeff D
Expert Research:
Jameson C
Expert Research:
John H
Expert Research:
Brandon M
Expert Research:
Adam R
Expert Research:
Lori W
Expert Research:
Rachael H
Expert Research:
Jeffrey L
Written by:
Tyler C
Video by:
Dustin K
Installed by:
Cole B
Installed by:
David F
Video Edited:
Chris R
Updated by:
Jenny M

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