1. Wiring
  2. Pollak
  3. Trailer Connectors
  4. Vehicle End Connector
  5. 7 Blade
  6. Plug Only
Pollak Metal 7-Pole, RV-Style Trailer Socket - Vehicle End

Pollak Metal 7-Pole, RV-Style Trailer Socket - Vehicle End

Item # PK12703
lowest price pledge
Retail:$25.37
Our Price: $9.00
You Save: 65%
Wiring
Orders above $99 qualify for Free Shipping
Shipping Weight: 0.5 lbs
Quantity: 
In Stock
zoom in icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Customer Photos

Videos

Establish a secure connection between your towing vehicle and trailer with this 7-pole, RV-style socket. Metal 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 Metal 7-Pole, RV-Style Trailer Socket - Vehicle End part number PK12703 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
  • All Info
  • Reviews (43)
  • Q & A (180)
  • Videos (1)
  • Photos
  • Why etrailer?

Pollak Wiring - PK12703

  • 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-style socket. Metal socket has non-corroding, shock-resistant interior design that eliminates shorting out and is color coded to RVI standards.


Features:

  • Standard, 7-pole, RV-style socket connects tow vehicle to trailer
  • Heavily plated metal construction
    • Resistant to weather and corrosion
  • 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 cover with stainless steel spring
  • 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
  • At its widest point, the diameter of the round portion 1-7/8"
  • Mounting holes are 1-1/2" from center to center vertically and 2-3/16" from center to center horizontally
  • 1-Year limited warranty


12-703 Pollak Metal 7-Pole, RV-Style Trailer Socket - Vehicle End
Replaces 30310





Video of Pollak Metal 7-Pole, RV-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 Wiring - Trailer Connectors - PK12703 Review

Today we'll be reviewing part number Pk12703. This is the Pollak metal 7-pole RV-style trailer socket. This socket is going to connect your tow vehicle to your trailer. It's got the heavy plated metal construction, which is going to be resistant to weather and corrosion. It's also got a noncorroding, shock-resistant interior design. It's going to feature a terminal reinforcer that's going to eliminate shorting out, as well as preventing contact from spreading.

The center pins will accept up to 8-gauge wire. Then here at the rear we have a nice vinyl insert that's going to help keep out dirt and moisture. We have the spring-loaded cover with the stainless steel spring, which functions as a safety latch, so it's going to ensure the connector is plugged well into the socket, and it's going to protect our connection points from the elements. When it comes to the wiring, it is going to be color coded to RVI standards. So to go over those color codes real quick and the recommended gauge wires, the white is going to be your ground wire. We're going to recommend 10-gauge.

Blue is for electric brakes. We recommend 12-gauge. Green is going to be for tail, license, and running lights. We recommend 14-gauge. Black is for the battery charge.

We recommend 10-gauge. Red is for stop and left-hand turn signal. Brown is for stop and right-hand turn signal. Yellow is for the auxiliary circuit. For all 3 of those we're going to recommend 14-gauge wiring. Here at the rear, at it's widest point, the diameter of the round portion is going to measure 1-7/8", and then we have 4 mounting holes here up front.

Center-on-center measuring this way is going to give us an 1-1/2", and then center-on-center measuring this way is going to measure 2-3/16". That's going to do it for today's review of part number Pk12703. This is the Pollak metal 7-pole RV-style trailer socket. .


Customer Reviews

Pollak Metal 7-Pole, RV-Style Trailer Socket - Vehicle End - PK12703

Average Customer Rating:  4.9 out of 5 stars   (43 Customer Reviews)

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

- PK12703
by:

Right product fast shipping. 727726



- PK12703
by:

Still very happy with this unit I sold that truck But remove the trailer plug from It & reinstalled it on my replacement truck & still use it, this was worth the effort. 433051



- PK12703
by:

good product made of steel not plastic,made in tiawan ,better than china,would like one made in USA. maybe etrailer can find more parts made in USA i would be willing to pay more.its time to take back our country,the USA. 63659


Comments
good so far i need to find a steel plug for the trailer now.
bruce - 07/23/2014

5857

Thanks for the feedback, happy to hear you are pleased with your vehicle connection. If you need the trailer plug, that is available as Part # PK12702
Pollak Metal 7-Pole, RV-Style Trailer Connector - Trailer End
$9.67
. It is linked above as a related part.

-- Rachael H - 7/24/2014


- PK12703
by:

Very happy with the product its self! Service as well was extraordinary! Very have customer, and amazing product it's self! 747661



- PK12703
by:

I am very grateful to E-Trailer for always providing excellent service. Orders are received in a timely and accurate fashion. The quality of their products is superb. All items ordered function as described with no malfunctions. The trailer and vehicle wiring connectors I have ordered were a great replacement for old existing equipment that was constantly failing. Very professional company. Very high quality products. I look forward to continued business with them. 675567



- PK12703
by:

Used in mixed fleet applications. Reliable quality with easy installation. Metal construction seems to provide more service life. 672333



- PK12703
by:

I replace the plastic ones as needed! 668274



- PK12703
by:

This looks pretty good, again I haven't had a chance to install it yet, but I'm sure it'll work fine. Maybe I'll report back once I have it installed and working. 652268



- PK12703
by:

Bought this after the cover on my plastic one broke in half so it would not hold the plug in. (It was -20° though). Solids well made piece, nothing here will break at -20°. Etrailer was the only place I could find one that is all metal. Placed the order and had it in hand in 3 days. Never let down by Etrailer. 602873


Comments
After 1 year its holding up great. No signs of rust either, Minnesota loves salting the h*ll out of the roads in the winter. I did give the inside contacts a good coat of dielectric grease And they are looking god too. Great product.
Steven - 02/07/2020

66393

- PK12703
by:

After having to replace numerous plastic sockets over the years I have finally found a robust alternative. Sturdy and well made. Not the cheap articles found in most places. Installed and used already they are not as bulky looking as the cheaper models so they don't protrude out but hug to the bumper. The salesman was very helpful and professional. Answering questions I posed to him. Will purchase from them again. 589618



- PK12703
by:

works great! 579763



- PK12703
by:

Product arrived, great shape. will work much better the the plastic ones. 504076



- PK12703
by:

Easy to install and works great. Can always rely on etrailer for great parts, fast shipping, and the best price around. 491233


Comments
Everything seems to be working well.
Patrick - 04/01/2019

51306

- PK12703
by:

Heavy duty metal not plastic 473558



- PK12703
by:

Everything as described and undamaged, as far as I can tell. 470895



- PK12703
by:

All Good 436538



- PK12703
by:

Good quality, excellent product. The only thing they missed IMHO is to put a rubber gasket to the cap. 423138



- PK12703
by:

Just exactly what I needed 404940



- PK12703
by:

great product heavy construction should a chunk of wood hit it you are covered 357858



- PK12703
by:

Looks good. Great price and fast shippi ng 357275



- PK12703
by:

Great product 339006



- PK12703
by:

Much better than a plastic one. 309601



- PK12703
by:

Works great, Very easy to install. The rubber plug in the back is the only difficult part to deal with. I Place a dab of silicone around it to make a better water proof fit. 304636



- PK12703
by:

Fast shipping. Great product! 285515



- PK12703
by:

Nice product. Fast shipping. 263456


25
43
Show More Reviews

Ask the Experts about this Pollak Wiring

  • Travel Trailer Battery Charging from the Tow Vehicle 7-Way
    When your trailer is connected to a 7-way like the Pollak Metal 7-Pole, RV-Style Trailer Socket - Vehicle End # PK12703 the pin at the 1 o'clock position is the 12V power that will charge your trailer battery when it is connected to the corresponding pin on your trailer side connector. This will give your trailer battery a slight maintenance charge that is about 2-4 amps depending on what your alternator can put out that isn't being used by your tow vehicle. This will be like a trickle...
    view full answer...
  • Are Available 7-Way Connectors Wired for US Made Trailers
    The 7-Way trailer wiring sockets we have available such as the Pollak Metal # PK12703 referenced in your question do indeed feature the standard US pin configuration. I have attached an image that shows the pin locations and functions that you can use for reference. This is a 7-Way for the vehicle end. For the trailer end you will use # PK12702. Keep in mind though that the actual wire color used on both the vehicle and trailer can differ. Because of this it is always best to test the...
    view full answer...
  • Trailer Brake Controller Installation on a 2015 GMC Acadia
    The vehicle is indeed pre-wired, as you suspected. To get completely set up, you'll need a brake controller, the appropriate wiring harness to connect the controller to the vehicle and a trailer connector for the rear of the vehicle. All the rest of the wiring is ran, but you'll need some fuses and relays to activate the tow package wiring. For a brake controller, you can't go wrong with the Tekonsha P3, part # 90195. The P3 is one of the most user-friendly brake controllers available....
    view full answer...
  • Troubleshooting Running Lights Not Working on Keystone RV Trailer
    There are many, many different reasons why your lights could not be working. In many cases a bad ground is to blame for this type of issue, but in order to determine the specific problem you will need to use a circuit tester such as # 40376 to test the connector on your vehicle after disconnecting it from your trailer. Check the wiring going into your harness from your tail lights to see if those wires are carrying the correct signals, if not then the issue is with the vehicle wiring....
    view full answer...
  • Activating Reverse Light Circuit of 7-Way Connector and 12 Volt Accessory Only When Key is On
    The short answer to both of your questions is "yes." You can tap into the reverse light circuit of your Grand Caravan for the reverse light circuit of the trailer wiring, but you should note that this circuit isn't always needed for trailer wiring so if you don't have a need for a reverse light circuit (no reverse lights, lock out solenoid) then you won't have to complete it for the trailer wiring to function. Then for an isolation solenoid to allow your 12 volt accessory circuit to...
    view full answer...
  • Brake Controller and Install Harness Recommendation for a 2015 GMC Acadia with Tow Package
    Topic 1: 7-Ways The 7-way you will have at the rear of your 2015 GMC Acadia is the same style of 7-way that would be found on an RV. Basically any trailer you can find that you would be able to tow with your vehicle that has a 7-way trailer wiring connection would be compatible with your Acadia as the connectors are the same. Topic 2: Brake Controller Recommendation and Installation All you need to install a brake controller in your vehicle is the correct install harness, part...
    view full answer...
  • 7-Way Wiring Diagram for Colors Yellow White Red Green Blue Brown and Black
    If you check out the middle diagram on the picture I attached you'll see the correct 7-way wiring diagram that matches the colors of the wires you have. The wiring colors you mentioned are considered 7-Way RV Standard.
    view full answer...
  • What Is The Purpose Of 12V Power On Trailer Connector For Fifth Wheel Trailer
    The 12V power pin on the 7-way connector for your fifth wheel is used for maintaining a charge on the trailer battery or auxilliary power. I have attached a helpful article that explains what each of the wires on a trailer connector functions are you can check out.
    view full answer...
  • No 12 Volt Power Reaching Trailer Connector on 2003 Chevrolet Silverado 2500HD
    In later model years (2007-2011) Chevrolet did not complete all the trailer wiring connections, but this should not be the case in your 2003 Silverado. If your 7-way has worked previously then there is a chance the connector is corroded or damaged, or that the factory wiring has failed. Check for signs of whitish or greenish discoloration on the contacts and apply an electrical contact cleaner as needed. Inspect the connector for damage and to ensure all wiring to the connector pins...
    view full answer...
  • Solution to Allow Trailer Running Light Circuit to Function on 2019 GMC Sierra 1500
    The trailer wiring on the newer trucks like what you are experiencing on your 2019 GMC Sierra 1500 and the new Ford trucks with the "smart tow" package are proving to be challenging for reasons like what you found where the truck doesn't want to show a trailer connection. The easiest solution you'll have will be the 7-Way Trailer Adapter # C57003 which was designed for German vehicles towing trailers with LED taillights that has load resistors built into it. Basically you'd install...
    view full answer...
  • How to Install 7-Way Metal Trailer Connector and Wiring Harness for a 1999 Jeep Wrangler
    You definitely can hard wire the part # PK12703 plug to your Wrangler, we have the wire and can help you do it. However, the easiest way to wire your Jeep with a 7 way connector would be to purchase a standard 4 pole connector (just plugs in behind the taillight assemblies) either # 42615 or # 118409, and upgrade with an # ETBC7 wiring kit. This kit has all parts necessary to install the 7 way connector on your vehicle and has the wiring for trailer brakes and auxiliary power to the trailer...
    view full answer...
  • Getting Power to 12-Volt Accessory Pin on 7-Way Trailer Connector
    To get power to the pin in the 1:00 position of the # PK12703 7-way trailer connector, you'd run a length of 10 gauge wire # 10-1-1 which is sold by the foot from the terminal for the 1:00 pin on the 7-way to the positive battery terminal, via a # 9510 40 amp circuit breaker. You'd need two # DW05741-1 ring terminals to connect to the breaker and a # 44-5356A ring terminal to connect at the battery.
    view full answer...
  • Wiring Recommendation for the Pollak Metal 7-Pole # PK12703
    For the Pollak Metal 7-Pole # PK12703 there isn't a harness that plugs into the back of it, but we do offer a jacketed 7-way wiring harness by the foot. For that you would want the part # DW04914-1. It's sold by the foot so you would need to order a quantity of it in the length you need.
    view full answer...
  • Wiring Extension for Flat Towing a Vehicle Behind Monaco RV with 7-Way Trailer Connector
    In order to determine the proper set up for your new towed vehicle (called a toad; the vehicle you will be flat towing behind the motor home) I would need to know the year, make, and model of that vehicle. Most of the tow bar wiring uses a 4-Way flat trailer connector with a few exceptions. Since your RV has a 7-Way trailer connector ideally you would use a cable that has a 7-Way on one end to plug into the RV and a matching connector on the other end for the tow bar wiring/lighting...
    view full answer...
  • Does the Ground Need To Be Re-Done When Installing a New Trailer Connector
    If you are using a trailer connector that hardwires to a set of blunt cut wires like the Pollak Metal 7-Pole, RV-Style Trailer Socket part # PK12703 then I recommend checking the ground terminal screw on the connector but if this is tight then I recommend just running a new ground wire to a bare metal surface on the frame to see if that fixes your issue. These trailer connectors don't ground though the mounting hardware if that is what you are asking.
    view full answer...
  • 7-Way Female to 7-Way Female Adapter Recommendation
    You would have to make an adapter since a 7-way female to 7-way female adapter isn't made. For wire you would need the part # DW04914-1 (sold by the foot). Then for 7-way connectors you would want the part # PK12703.
    view full answer...
  • Wiring a 7-Way Trailer Connector if Existing Wire Colors Dont Match
    The wire colors/functions listed on the page for vehicle side 7-Pole connector # PK12703 are just the most common ones. There is no standard for wiring color and function on vehicles or trailers. To wire up a new connector you will need to do so by function. This means you will need to know what each of the wires does. On the trailer side you can either follow each wire back to see where it terminates and wire it to the 7-Way accordingly or you can run power through each wire using a...
    view full answer...
  • How to Allow 12 Volt Accessory Circuit of 7-Way to be Active all the Time
    Sounds like the 12 volt accessory circuit of your truck's 7-way turns off when the vehicle turns off. Is that correct? If you are looking for a way to keep the circuit active all the time you'd need to run a 10 gauge wire like part # 10-1-1 (sold by foot) through a breaker like part # 9510 directly to the positive post of the battery and the circuit will be active all the time.
    view full answer...
  • Activating 12-Volt Accessory Circuit to 7-Way on 2004 Chevy Silverado 2500
    The pin in the 1:00 position on your 7-way is fed by the auxiliary power circuit. The wire feeding that circuit runs to the engine compartment and terminates under the brake booster and master cylinder and will have a ring terminal on the end of it. The ring terminal will connect to the front power post on the fuse box under the hood. A 40 amp fuse will need to be installed in the location closest to the power post to activate the circuit. I have edited a photo for you showing the fuse...
    view full answer...
  • Trailer Wiring Harness Recommendation for a 1994 Jeep Grand Cherokee
    I checked with Tow Ready and the recommended trailer wiring harness for your 1994 Jeep Grand Cherokee is the part # 118349. However, the connectors of this kit have 6 pins. Which either means it wouldn't work for your vehicle or you have found the wrong harness to use for installing trailer wiring. Another option would be to use a universal wiring harness for installing trailer wiring. For that you would want to use the part # 119190KIT. This will require you to test the taillight wiring...
    view full answer...
  • No Power To 12 Volt Pin On 7-Way Of a GM Truck
    I did not see where you listed the year, make, and model of your tow vehicle which I would need in order to confirm the fuse location (if present) but these are almost always listed in the owner's manual so that is where I recommend that you look. If you already checked the M8 stud on the fuse box then you best option is to just run a new 12 volt power wire of your own with part # RM-156-75.
    view full answer...
  • How to Stop Corrosion in The 7-Way RV Style Connector
    Your best bet to eliminate corrosion in your 7-way connector is to use some Dielectric Grease for Electrical Connectors, item # 11755. Use this on the wiring connectors inside the connector when installing the connector and occasionally on the connection between the truck and trailer and your corrosion issues will be behind you. The corrosion you are experiencing is from moisture in the air and is prevelent with the RV connectors. The presence of constant 12 volt power creates an atmosphere...
    view full answer...
  • Wiring In-Bed Trailer Wiring 12 Volt Power to a Switched Ignition Source on a 2004 Chevy Silverado
    The AUX can be a power source if connected to the battery. Normally on a 7-Way, the center pole is either AUX or reverse lights. I recommend using the center pole for the reverse lamps since you can wire the 12 volt hot lead to be on a switched ignition source if you wanted. Basically what you would do is find a 12 volt power wire that is only hot when the truck is on. That way it will turn off when you shut off the key. One way to do this would be to use a battery isolator, # TR118665....
    view full answer...
  • Tail Light Converter Recommendation for a Motorhome with Separate Tail Lights
    It sounds like you have separate tail lights on your motor home. Meaning that the stop/tail lights are not on the same bulb as the turn signals, and that your current wiring is set up for combined tail light wiring. We have a converter that will need to install onto the wiring of your motorhome so that the signal will be split appropriately. You would want a Vehicle to Vehicle Taillight Converter # 118158. To wire it in you will need to take the right turn/stop circuit and run it...
    view full answer...
  • Standard 7-Way Wiring For Vehicle Side Trailer Connection
    I don't know which truck or trailer isn't wired standard, but it sounds like with multiple trailers working on your vehicle that your friend's truck and trailer are wired wrong, but to fit each other. I've attached a picture of what each of the 7 pins are set to function when set up with the standard configuration. I've also attached an article on trailer wiring to help. I suggest using a circuit tester like # PK12741 to help you determine if your truck is wired correctly and what function...
    view full answer...
  • Trailer Running Lights Not Working When Connected to 2006 Chevrolet Silverado
    Step one in troubleshooting your trailer running lights is to isolate the problem to either the tow vehicle or the trailer wiring. You will need a circuit tester such as # PTW2979. I suggest you review the included article on troubleshooting trailer wiring as this provides a lot of useful guidance on the steps to identify the source of the problem. Start by disconnecting the trailer from the tow vehicle. With the Silverado lights on, test the pin on the truck 4-way connector that corresponds...
    view full answer...
  • 7-Way RV Trailer Connector Wiring Diagram
    When wiring a trailer connector, it is best to wire by function, as wire colors can vary. We have an excellent wiring diagram on our website, I will provide you a link so you can look at it. If you are looking at the inside of the trailer connector where the wires mount to the terminals starting at the notch at the top and working clockwise: 1:00 is Black and 12 volt power 3:00 is Green and Right Turn and Brake 5:00 is Blue and Brake Controller 7:00 is White and Ground 9:00 is...
    view full answer...
  • Adding an In Line Fuse to a 12 V Power Lead from a Vehicle Battery to a Trailer Connector
    I assume you are wanting to add an in line fuse to a 12V power circuit running from your vehicle battery to the trailer connector on your vehicle. There are a few things to consider before adding an in line fuse to a 12V power lead to a trailer connector. If your vehicle currently has a factory installed 7-way trailer connector, then the power lead will already have a fuse. If you are adding a 12V power lead to your vehicle, then we typically require a 40 amp circuit breaker, like...
    view full answer...
  • Where to Attach Auxillary Power Wire on Vehicle Side 7-Way connector on 2001 Ford F-350
    Yes, you will use the number 4 pin on your 7-way connector, item # PK12703, which may also be labeled Red. The normal attachment is a Black 10 gauge wire to this connection for charging the trailers battery and powering 12 volt accessories.
    view full answer...

Do you have a question about this Wiring?




  • Why etrailer.com?

    At etrailer.com we guarantee:
  • Highest quality wiring for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate wiring information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Expert Research:
Mike L
Expert Research:
Patrick B
Expert Research:
Michael H
Expert Research:
Jeff D
Expert Research:
Jameson C
Expert Research:
John H
Expert Research:
Adam R
Expert Research:
Rachael H
Expert Research:
Jeffrey L
Expert Research:
Victoria B
Written by:
Tyler C
Installed by:
Cole B

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.


Product Experts Available Now!
Call 800-298-8924