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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
Our Price: $6.65
You Save: 63%
Trailer Wiring
Shipping Weight: 0.2 lbs
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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. Great Prices for the best trailer wiring from Pollak. Pollak Black Plastic, 7-Pole, RV-Style Trailer Connector - Trailer End part number PK12706 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (553)
  • Q & A (0)
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Pollak Trailer Wiring - PK12706

  • Trailer Connectors
  • Trailer End Connector
  • 7 Round - 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.


  • 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


  • 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 Satisfaction Score:

Customer Reviews

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

Average Customer Rating:  4.7 out of 5 stars   (553 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.


Product so far has worked great for a pinched/cut OEM 7pin cord. It isnt weatherproof like an OEM connector to the cord-as well as the female end of the connector but then its just the connector so totally sealed is not the design for this. It works fine & currently has saved me from having to purchase a connector & wire cord as 1 piece & some shennagins with installing that set up.


It's a good plug and easy to wire with internal screw terminals. However, there's no real weatherproof seal to the cable or bundled wiring that you're inserting into the plug. It's going to get wet inside the plug, leading to possible short circuits unless you seal the cable entry well with RTV or dry it out regularly and/or take it apart once and a while to make sure there's no corrosion on the terminals. A lot of plugs are like this which is why the manufacturers use a molded plug/cable assembly for the trailer connector cable.


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.


Great jack for the money! Much better than the jacks that come on most utility trailers that wear out quickly.


Showed up in acceptable condition, refused order. Parts missing. Have not heard back yet for replacement of order

Etrailer Expert

Katrina D.


That is not good! I have sent your information over to our customer service department for them to get you your missing parts.


This was a great deal. I was switching from and old style 6 pin. What I really like was the size of the wire clamps and screws. Because of this I was able to fit 10 gauge wires in the 12V +-locations for better/ faster battery charging in my camper while driving.


Excellent place to purchase quality par ts.

by: 05/18/2023

Decided to install this myself after getting quotes for $1100.00.
Now I know why they charge so much. But with the help of etrailer's
video's the install went as planned and works great.
Thanks etrailer.


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.


Quick delivery...I have used this product before from great.


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



Continues to work well...both for the trailer and the sprayer rig.....


all good, easy to install and working as it should.


Good quality, quick delivery, everything fit as expected. Thank you again, etrailer!


Easy to order, and was delivered when they stated it would be here.


Seems as expected


This was an exact replacement for the one that had broken. Its even labeled inside for what color wires attach to what terminal. Can not go wrong here.



Still working out great after 1 year. No issues. Stock OEM replacement.


This was the last part I needed to order to carry a spare tire on my RV. Sherry S. was a GREAT help ensuring I had all the right part for my Road Master spare tire carrier - and didn't order more than I needed. Lots of helpful information on their web-sites and the videos were also very helpful. Will definitely purchase from Sherry and etrailer again.


easy installation


Exact product that I was expecting. Quality trailer connector.


I was hoping that these connectors would be better than they are. They do work. I would consider them a two trip connector; the first trip from one state to another, the second trip watching the sold trailer being pulled off by the new owner.

Sometimes you really do get what you pay for.


My trailer connector got to me sooner that promised . It was exactly the right one, which I was unable to find in my local retail stores.


Finally, a company that actually knows how to package a product! Quality packing materials, Thick, sturdy cartons, plenty of paper to prevent the items from banging around inside and destroying each other. Quick shipping, good communication and overall fair prices. Will be back for more!


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.

Etrailer Expert

Jon G.


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.


Excellent customer service, reasonable pricing, timely shipping and delivery,, and quality parts for the past 10 years of doing business with Keep up the good work.


Great replacement for my old style trialer connector that was causing intermittent signal issues. Good quality.

Show More Reviews

See what our Experts say about this Pollak Trailer Wiring

  • Wiring an Old Trailer with a New 7-Way Connector and Figuring out the Wires
    I would start by getting a RV-Style Trailer Connector, item # PK12706, to wire your trailer. You will need this connector since your trailer has reverse lights. If your trailer has brakes you will also need a brake controller and wiring to install it in your vehicle. I would connect a wire to the tail light circuit in the 7-Way connector and check each one of the wires on the trailer independently, labeling them as you go. You will also need to make sure a there is a ground wire from the...
    view full answer...
  • How are the Terminals Labeled for Wiring in Pollak RV-Style Trailer End Trailer Connector # PK12706
    The terminal itself in Pollak RV-Style Trailer End Trailer Connector, # PK12706, is not red but it is labeled, 5 RED, on the inside of the connector. It would be difficult to see in the video, linked for reference, but I have taken a more detailed picture that illustrates what it will look like on the actual part. The diagram on the product page uses the most common wiring colors. Red is not usually used but on this connector, it is labeled RED, for the left turn and brake light signal....
    view full answer...
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  • Wiring a 7-Way Trailer Connector to a 1998 Jayco Pop Up Camper
    Yes, you can use the Pollack 7-Way Trailer Connector, # PK12706, on your 1998 Jayco Pop Up Camper. The first step is to verify the functions of the wires on your camper. To verify the functions of each wire you can follow the wires along the trailer and see where they end up. You should have two different color wires going into the left and right turn signals and another color going into all of the tail lights. Those will be your turn signal and tail light circuits. The white wire is...
    view full answer...
  • Troubleshooting Trailer Running Light Circuit that Comes on When Trailer Wiring is Plugged In
    You have a short between the 12 volt running light circuit of your trailer's wiring and the running light circuit. This is causing the voltage from the 12 volt circuit to backfeed onto both the trailer and truck. You need to check out the connector of the trailer on the front and back looking for any exposed wire or corrosion and fix as needed.
    view full answer...
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  • What are the Wire Designations For the Pollak 7-Pole RV-Style Trailer Connector # PK12706
    I completely understand the confusion, however the diagram that is listed on the Pollak 7-Way RV-Style Trailer Connector # PK12706 is correct. The picture on the right side is the mirror image of the picture on the left. The raised portion at 12 oclock that orients the male plug in the female socket is on the outside housing and the notch on the bottom of the inside portion is for a raised portion at 6 oclock inside the housing.
    view full answer...
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  • Tekonsha Prodigy Reading No Trailer on a 2008 Toyota 4 Runner Using a 7 to 5 Pole Adapter
    The adapter is probably the culprit. Traditionally a 5-Pole connector uses the 5th wire for reverse lights, not a brake controller. The easiest solution would be to convert your trailer connector to a 7-Pole using something like part # PK12706. All of the adapters that we carry are built for reverse lights as the 5th pole, not brake controller output. I have added a link to a wiring help page. About half way down we have a diagram that breaks down a 7-Way pin by pin to show you what...
    view full answer...
  • How to Wire a 7-way Trailer End Electrical Connector on a 2008 Chevrolet Silverado Pickup
    If you are looking at the inside of the Trailer end connector where the wires are secured you will notice numbers and or colors printed next to each pole. There is a wiring diagram on our wiring page (see link below) that shows you where each wire is attached and what function is related to that circuit. Number one should be your ground wire (white), number two is the electric brake wire (blue), number three is the taillight wire (brown), number four is the 12 volt accessory wire (black),...
    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...
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  • Who is the Manufacturer of 7-Way Plastic Trailer Connector with Trailer End PK12706
    The 7-Way trailer end connector, part # PK12706, is made by Pollak. I recommend taking a look at the demonstration video I am linking, as it goes through the steps involved in replacing an old trailer connector. You can view some additional information on wiring for towing at the provided link to our Wiring FAQ.
    view full answer...
  • What Circuit Does Side Markers on Trailer Run To
    The side markers signals that currently aren't working need to run to the running light circuit of your trailer wiring junction box.
    view full answer...
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  • How To Wire a Trailer Connector With Uncommon Wire Colors
    I would love to help but a common misconception with wiring a trailer is that you can just simply match colors and that is not the case. In order to install a new trailer connector like part # PK12706 on your trailer you will need to test each circuit to see which wire has which function which can be done by applying 12 volt power to each wire and then checking to see which circuit is activated by that wire. This is the only tried and true method for trailer wiring. I have attached our...
    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...
  • Where do the Trailer Brake Magnets Wires Install on a 7-Way Trailer Connector
    The black wire is probably your ground and you will secure it to a clean bare metal surface on the trailer frame. Your red wire is probably your power and that will go to your 7-way trailer connector, such as # PK12706, at the 5 o'clock position. I included a diagram of a 7-way trailer connector and a helpful article about wiring for you too.
    view full answer...
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  • 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...
  • How to Wire The Pollack 7-Pole Trailer Connector With 2 Brown and 2 White Wires
    It sounds like someone has wired your trailer with non-standard wiring colors. Your additional brown and white wire are most likely a 12 volt power lead and an auxiliary power lead. Before you wire the Pollak 7-Pole Trailer Connector, # PK12706, you should verify the function of each wire. Our video and our chart on the product page shows the standard wiring colors. To verify the functions of each wire you can follow the wires along the trailer and see where they end up or you can use...
    view full answer...
  • Troubleshooting Trailer Turn Signal/Stop Lights Not Working After 7-Way Install
    The problem is the stop/turn signal circuit of the 7-way. The running lights for the taillights are their own separate circuit and there should be a second wire run to the taillights that carries the stop/turn circuit. I attached a diagram that shows how a 7-way is typically wired. If your current 7-way is wired up correctly the next thing to check is the grounds of the taillights as it sounds like they may not be sufficient to power the increased amperage draw of the stop/turn circuit....
    view full answer...
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  • 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...
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  • Which Wire on Trailer's 7-Way Wiring is Brake Output
    It is probably the black wire that is the brake wire on your trailer's 7-way wiring and the red wire is the 12 volt accessory circuit. I would recommend verifying this by tracing where the wire goes as not everyone follows wiring color standards.
    view full answer...
  • Wire Color Guide Recommendation for Installing 7-Way Kit part # PK12706
    There are a couple ways that 7-way wiring colors can appear so it does make it a little difficult to say for certain what you'd have to use. But I attached a couple pictures that show how the two most popular color configurations would wire to the # PK12706. The middle set of pictures and the left set are the two most common ones for you to use as a guide.
    view full answer...
    Image 1 for
  • Troubleshooting Brake Controller Installation On 2006 Chevrolet Silverado 1500
    It sounds like you did not have a factory 7-way trailer connector on your 2006 Silverado. I have attached a link to a helpful article that explains how a brake controller is installed on a Silverado like yours. In step 2 under section F it explains how the wiring including the Blue wire is connected and which fuses and fuse box posts are used. It sounds like a step may have been missed when the brake controller wiring was completed. Check out the article and if you complete all of the...
    view full answer...
  • Interior Dome Light on Discovery Trailer Only Works with Brake Pedal on Ford Expedition
    I can certainly say that is a unique issue that I have not heard before. However, I suspect the wiring on the trailer is what is causing the odd lighting funcion. The trailer may be wired correctly according to the manufacturer but that does not necessarily mean it matches what is on the tow vehicle. Generally speaking, the interior dome light on a cargo trailer will be ran to a separate battery on the trailer. If the trailer does not have a seperate battery then it will be ran to the 12...
    view full answer...
  • Troubleshooting Trailer Brakes Not Working with a 1976 Golden Falcon Camper
    It sounds like there is an issue on the trailer brakes of your 1976 Golden Falcon camper. You may want to verify that your camper does have electric trailer brakes. It may seem silly, but just because there is a 7-way on your trailer that does not necessarily mean it has brakes. If you do find that it does have brakes, the next thing to check is the wiring of the brakes. You will want to check the back of the trailer 7-way on the brake output circuit to first check for corrosion. Next,...
    view full answer...
  • Middle Pin Came Off From Pollak 7-Pole Trailer Connector
    I spoke with my contact at Pollak regarding your 7-Pole Trailer Connector # PK12706. He stated that If the center pin broke/came off from the connector, the entire connector should be replaced. There isn't really a way to securely re-attach the pin if it broke off from the connector.
    view full answer...
  • Re-Wiring a 7-Way Trailer Connector Onto a 1972 Shasta Trailer
    It sounds like you will need to wire the trailer with a 7-Way connector to match the one on your 2001 Chevy Suburban. If you look at the Wiring FAQ article, linked below, about half way down the page you will see diagrams for connectors. You will need to re-wire the trailer wiring to match the one that says inside on the 7 Way Trailer Connector section. The colors on your trailer might not match up. But if you are looking at the back of a 7-Way connector, top left is tail and running lights,...
    view full answer...

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