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

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

Item # PK12703
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Pollak Trailer Connectors - PK12703
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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.
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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






Customer Reviews

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

Average Customer Rating:  4.9 out of 5 stars   (46 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:

Much stronger for our trucks than the plastic ones 880537



- PK12703
by:

Extremely easy ordering process. Great product, we have re-ordered many times. Received follow up email making sure we received product. Have not had any issues but I feel if we needed anything they would help right away. 869572



- PK12703
by:

Everything arrived as expected and all fit perfectly!! This is not my first purchase from etrailer, and as before, shipping was timely and all components were as they advertised them to be. I will not hesitate to order again when I need something they offer. 830663



- 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 etrailer 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


Comments
Worked perfectly! The one on our 23 year old rig was looking a bit worn so it made sense to replace it as this was our first attempt at towing. Again, good quality and so far its still working!
Paul M - 05/31/2020

78153

- 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


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Show More Reviews

Ask the Experts about this Pollak Wiring

  • 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...
  • 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...
  • 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...
  • 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...
  • What Gauge Wire Is Needed To Run Charge Line for Battery From Truck to Trailer
    The wire that runs from the vehicle's battery to the 7-way trailer connector and then from the 7-way trailer connector to the trailer battery should be at least a 10 gauge. If you don't have any 10 gauge wire you can purchase part # 10-1-1 by the foot. Please note, you will need a circuit breaker part # 9510 on this charge line wire about 6" away from the battery on the tow vehicle. The 7-way trailer connector can then be used to attach and disconnect the charge line between the tow vehicle...
    view full answer...
  • 4-Way to 7-Way Adapter Recommendation for Flat Towing
    Yes, you will want to install the Adapter part # 30717 on your RV. You will plug the 4-way of your RV into the 4-way of this adapter and then the 7-way of your towed vehicle will plug right into the 7-way of the adapter.
    view full answer...
  • Does Trailer Ground Circuit Run to Trailer Frame
    The ground circuit of trailer wiring does often times run straight to the frame of the trailer. This makes for easier ground wiring of all the circuits that are on the trailer wiring. Instead of having to route every ground wire back to the trailer connector you can just wire it to the nearest section of trailer frame.
    view full answer...
  • What are the Trailer Fuse Locations for my 2018 Ford F-150
    Check the # 24 for the trailer brake control module, #30 Trailer tow battery charge, #43 Trailer tow lamps module, #53 Trailer tow park lamps, #74 Trailer tow backup lamps and #104 Trailer tow stop-turn relay fuse. These are the fuses I was able to identify that may be causing you issues. It sounds as if you have done the necessary repair at the rear correctly so I believe you will find one of these blown. While some sound unrelated in a way you never know and it is worth a check while...
    view full answer...
  • Wire Functions/Locations for a Trailer Side 6-Way Connector
    GD is ground LT is left turn/brake lights RT is right turn/brake lights TM is tail lights AS is likely auxiliary 12 volt power which was probably used to run the pump I have also included a picture that shows the basic layout of a 6-Way connector, trailer side. Please note that in some situations the brake and 12 volt power circuits are switched.
    view full answer...
  • Troubleshooting Running Lights Not Working on Trailer
    You did not specify what vehicle you have but many will have a fuse specifically for those lights so if you take a look at your owner's manual it should specify which fuse you need to replace as well as its location. Additionally you may have an overload if your running lights are incandescent or there is a short that is causing the overdraw so you will want to check the maximum amps your harness can handle and make sure the lights aren't drawing more than that. I have also added...
    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...
  • Recommended Brake Controller To Replace OEM Brake Controller On 2015 Chevrolet Silverado
    The issues you are having and the fact they are intermittent sounds like the brake controller has an internal issue. You can check the resistance to see if the system is operating correctly. Use a multimeter like part # BTMT15. Check the brake signal while someone applies the manual override. For one axle on your trailer(2 brakes) you should see about 2 ohms and for two axles(4 brakes) you should get about 1 ohm. If that checks out Have some one apply the brakes while barely moving...
    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...
  • 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...
  • Difference Between 7-Way Wiring Diagram that Uses Red Wire and Purple Wire
    There are actually two ways that 7-way wiring colors are commonly seen. One uses a red wire and the other a purple. The circuits they represent do vary though. So check out the updated diagram I attached to this page and most likely you need to wire the connector up like the center one.
    view full answer...
  • How Do Trailers Maintain Ground Connection from Tow Vehicle
    A trailer will use the vehicle's ground on the 7-way (or 4-pole), usually carried on the white wire, for its lights, brakes, etc. As you look at the vehicle 7-way socket (please see the linked photo) the ground is usually carried on the pin at the 7-o-clock position. It should not be necessary to make any ground connection to the hitch itself. In actual use the coupler/hitch ball connection does provide a degree of grounding for the trailer, but this will not be enough for all of the lights,...
    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...
  • Troubleshooting No Power to Pins on Seven Way Connector
    If you have a Chevy Silverado there may be some additional connections you need to make under the hood in order to make the 7-Way fully functional. I have included a link to an FAQ article that will help. If everything is connected properly and you are still not getting power at the 7-Way, you could bypass the factory connection. You can cut the wire a few inches forward of the trailer connector. You need the wire in the 11:00 position if looking at the back of the 7-Way where the wires...
    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...
  • 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...
  • 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...
  • 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...
  • 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...
  • 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 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...
  • Where Does the 12 Volt Power Wire Come From that Goes into the Back of a 7-Way Trailer Connector
    On a vehicle side 7-Way trailer connector the 12 volt power wire comes from the battery if you are hardwiring in a connector and running the wires yourself. In a vehicle that has a factory tow package it runs through the power distribution box and is fused from the factory. If hardwiring in a 12 volt circuit yourself you can use wire # 12-1-1, sold by the foot. The wire will first go to a 40 amp circuit breaker, # PK54540, and from the breaker to the positive battery terminal.
    view full answer...
  • Troubleshooting No Power on the Blue Brake Output Wire from a Brake Controller
    To determine why you do not have any power on the blue brake output wire, I recommend starting at your brake controller. First, make sure the brake controller is on and receiving power. Most brake controllers have 4 wires, blue (brake output to trailer brakes), white (ground), black (12 Volt power from vehicle battery), and red (stop light switch). If your brake controller is not on, make sure the black power wire is connected to the vehicle battery via a 20 or 30 amp circuit breaker....
    view full answer...
  • Troubleshooting the 12 Volt Power Circuit on the 7-Way of a 2008 Chevy Silverado 2500
    The first thing I would check once you have the connector wired up and the circuit appears to go dead would be for voltage on the wire before the connector. You said that the circuit appears to go dead once the connector is attached testing the wire of the circuit before the connector will allow you to determine if the problem is in the connector or on the circuit. If there is voltage on the circuit before the connector but not at the 1:00 position of the 7-way then you know that the...
    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...

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