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Pollak Trailer Connector Adapter - Vehicle End - 7-Pole Round to 7-Way Blade
Pollak

Pollak Trailer Connector Adapter - Vehicle End - 7-Pole Round to 7-Way Blade

Part Number: PK12-724
In Stock
$29.08
Retail:$54.00
You Save: 46%
Custom Fit Vehicle Wiring
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This adapter plugs into your vehicle's 7-way, round-pin receptacle to adapt it for use with a trailer-end, 7-way, RV-style plug. The 7-way flat receptacle includes a hinged cover to keep dirt and moisture out of the connection. 1-800-940-8924 to order Pollak custom fit vehicle wiring part number PK12-724 or order online at etrailer.com. Free expert support on all Pollak products. Great prices and Fastest Shipping for Pollak Trailer Connector Adapter - Vehicle End - 7-Pole Round to 7-Way Blade. Custom Fit Vehicle Wiring reviews from real customers.
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Pollak Custom Fit Vehicle Wiring - PK12-724

Highlights

  • 7-Way Conversion: Adapts 7-round pin to 7-way blade trailer connector seamlessly.
  • Durable Materials: Made from high-impact ABS thermoplastic and glass-filled nylon.
  • Protective Design: Hinged cover safeguards connection from dirt and moisture.
  • Versatile Length: Overall length of 14-1/2", with 7-1/2" between plug and socket.
  • Clear Wire Configuration: Features 8-gauge ground wire and 10-12 gauge circuit wires.
  • Reliable Performance: Ensures solid contact with floating brass pins to minimize voltage drop.

Features to know about

Effortless Compatibility: 7-Pole Round to 7-Way Blade Adapter

Transform your vehicle's 7-way round-pin receptacle into a versatile hub for towing trailers with RV-style 7-way blade plugs. With this adapter, seamlessly connect ground, left turn, right turn, and stop circuits, ensuring that your vehicle and trailer communicate effectively. It's a perfect solution for anyone with a 7-way blade plug trailer looking to enhance compatibility without the need for rewiring.

Durable Protection from the Elements: Hinged Cover and Solid Construction

Keep your connections clean and dry with the adapter's spring-loaded, hinged door that shields the interior from dirt and moisture. The plug, made of glass-filled nylon, and the socket, crafted from high-impact ABS thermoplastic, are built to last. Whether you’re driving through rain or shine, this adapter is designed to withstand the elements and maintain a strong connection.

Seamless Electrical Performance: High-Quality Brass Pins

Round, floating, solid brass pins reduce voltage drop and align effortlessly for maximum contact. Designed to ensure reliable electrical performance, these pins help maintain consistent power flow to your trailer's lights and systems, giving you peace of mind during your towing ventures.

Perfect Fit for Your Setup: Detailed Wiring Configuration

Adapt with precision using the detailed wire setup: White for ground return, Black for clearance, Yellow for left turn and hazard, Red for stop lights, Green for right turn and hazard, Brown for tail light arrangements, and Blue for auxiliary circuits. Note: not compatible with 7-round plug systems that separate brake and turn signal wires, offering specific solutions for particular setups.

Dependable Adaptation for Various Builds: Versatile Use Across Vehicles

Whether you're towing with an older model truck, a tractor, or something else entirely, this adapter is versatile enough to fit different vehicle configurations securely. Use it to connect your truck or tractor to a trailer seamlessly without having to change the existing setup. You’ll find this adapter especially handy when switching between different towing vehicles.

Specs

Dimensions

  • Overall length: 14-1/2"
  • Length between plug and socket: 7-1/2"

Wire Configuration

  • White: ground return
  • Black: clearance, side marker and identification lights
  • Yellow: left turn signal and hazard signal
  • Red: stop lights and anti-lock devices
  • Green: right turn signal and hazard lights
  • Brown: tail light, rear clearance marker and license plate light
  • Blue: auxiliary circuit/ABS power

Wire Gauge

  • White: 8
  • Red, blue: 10
  • Black, yellow, green, brown: 12

Warranty

  • 1-Year limited warranty

Note

If your 7-round plug is wired separately (brake light and turn signals on different wires), this adapter won't work.

12-724E Pollak Trailer Connector Adapter - Vehicle End - 7-Pole Round to 7-Way Blade

Replaces Pollak 12-724EP





Customer Satisfaction Score:

Ratings & Reviews

4.7

177 reviews
This adapter plugs into your vehicle's 7-way, round-pin receptacle to adapt it for use with a trailer-end, 7-way, RV-style plug. The 7-way flat receptacle includes a hinged cover to keep dirt and moisture out of the connection.

by:

like product,exactly what i was looking for



by:

I could not find this anywhere else. Happy so far



by:

I received this item in a plastic bag, for a few moments i wondered if it was a knock-off. I had done my home work and was sure that this item would be compatible with the socket on my John Deere 2013 5085M at the time I ordered it, not so. The 'holding ridge' at the plug-in end was not in the right position when fully inserted into the plug on the tractor. I sent multiple pictures to Pollack Technical Support but they were unable to assist me. I finally modified the item myself (something I really hate to do) so that it would fit the plug-in and be 'grasped' by the cover/holder on the tractor side. As I anticipated, the thickness of the plastic was inadequate to make the adaptation 'sweet', so I had to cover the resulting hole with silicone caulk.



by:

I will call to arrange a return of this worthless item

Brooke M. profile picture
Etrailer Expert

Brooke M.

11/20/2024

Hey, Timothy! Whats going on with the adapter? Maybe I can help you before you return it.



by:

Little disappointed in the tubing on the wires, thought it would be molded. But, I'll heat sink it.



by:

Perfect adapter for pulling a hayride t railer!



by:

Got it just when it said it would be here. The 7 into 7 plug that was ordered is already on the truck an trailer. Thanks Guys.



by:

Well put together



by:

This is a great solution for adapting RV blade connector to 6 pole connector. I give it 5 stars. I use this for work purposes, and have found one issue that I DON'T believe to be manufacturer defect. In my industry we use different trucks and trailers daily, if not hourly. Some trailer electric brakes will lock up when adapter is connected. I have found the red wire in the adapter to be the problem. My solution was to splice in a switch so that when the intermittent problem arises I can flip the switch and be on my way.

Rachael H. profile picture
Etrailer Expert

Rachael H.

6/23/2018

Thanks for the information Charles, I did want to let you know that there are two differnet wiring configurations for these 6-way connectors. Sometimes the red wire that you noted as the brake connector point can also be pinned as the 12V power wire. This would then activate the brakes, as you noticed. Your solution while it worked for your application is not something that we generally recommend for our customer in case they forget to flip the switch and are then towing without brakes on their trailer. For that instance we recommend repinning the connector and changing the 12V and Brake pins to correspond to the correct functions.



by:

This item is high quality but the real "value" here is the outstanding customer service that etrailer provided. The 7 pin round plug provided didn't fit my 7 pin round socket and they went out of the way to research the difference in my socket and their plug. Great company.

Eddie profile picture

Eddie

2/27/2014

I still like it fine but I dont use it much.



by:

Great company



by:

seemed to be a good product , the only problem was going from 7 pin round semi connector to 7 pin rv style the trailer brake circuit did not line up , some rewiring was required so it would work with the brake controller ( if i would have i checked your website i would have known it sooner , no problem figured it out ) used truck and trailer alot since , no problems so far



by:

We are so glad we found etrailer.com! We have never ordered an incorrect part because their info - and large bank of Q&As - has always told us everything we needed to know. I wanted to share our experience with the Pollack 7-way blade to 7-way round connector, part PK12-724. When researching for the correct part, we found a question from a buyer who had the same/similar vehicle, a 1993 Ford F-150 with a factory tow package. He was told to buy the PK12-724 but to cut the red and blue wires and cross-connect them. (This was info we we so glad to have!)

We did so, and most everything worked except the trailer back-up lights came on whenever the lights were turned on. We mentioned it at the RV place when we were there, and they checked it for us. Turns out that not only did we have that issue, but our trailer battery was not charging when hooked up and truck running. So on the blade end of the connector, they moved some of the wires around (see included illustration), and voila, everything now works correctly! I hope this is helpful to others. I believe the truck information is the most important info for this fix, but FYI our Trailer is a 1994 Komfort 27.



by:

This is a well made item and it worked perfectly on my 1933 ford truck !



by:

My trailer connector works great. Because I live a ways from town it was great to order it online and have it shipped. It arrived quickly. One note: When I was in town I did see the same connector at NAPA for the same price. All things considered, I'm happy with my purchase and would order from etrailer again.



by:

The adapter harness eliminated time & grief to replace/re-wire the commercial style plug on a farm tractor, allowing use of tail, turn, and brake lights on trailers with blade type connector. Works great.



by:

Exactly what I needed to hook a conventional trailer to our new bucket truck without cutting the wiring up to get rid of the rare 7 pin socket.



by:

Product was exactly as described, and fit the unique need to convert the 7 pole to 7 blade trailer light system. This saved rewiring the vehicle and/or trailer.



by:

This particular adaptor was not available locally and we needed one on very short notice. The staff at etrailer made sure the product was shipped overnight so we could depart as planned the following day. While many promise good service it would appear etrailer actually has product in stock and works at getting it delivered on time, a combination that is not so common these days.

Thanks



by:

Have a '79 Dodge with the older style 7 round pin Pollack connector and bought a new camp trailer with the 7 pin spade connector...needed an adaptor. Their PK12-724 was the perfect fit! Well built, and works perfectly! Etrailer.com has fast order processing too. Very satisfied with the product, price & service!



by:

The 14 inch extension 7 prong pigtail arrived very quickly as described. This is going to work perfect as I need the power cord from the trailer to the truck to be less than a foot longer to make the connection. Thanks for the really quick delivery on the perfect fix!! It appears to be very well built.
Marco



by:

This converter plug and light tester is exactly what we needed for demands of the studio industry that we work in. Allows us to quickly check the trailer light system of our trucks and get them working.
Thanks for a great product.



by:

okay product. Still had to do some wire switching to make it work on an airstream.

Tom profile picture

Tom

8/28/2017

it works fine after finding the wiring problems



by:

It worked as expected but he male round plug bottomed out in my tractor and would not engage the latch on the lid to hold it in. Had to sip tie it in place. I have other 7 pin round plugs which work fine but this one seems longer than the others.



by:

All of our trucks come wired with round pole trailer plug and some of our trailers take 7 spade style this adapter solves our problem and is cheaper than buying the parts and making them our selves.


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See what our Experts say about this Pollak Custom Fit Vehicle Wiring

  • 7-Way Adapter to Use with Pollak Trailer Connector Adapter part # PK12-724
    Yes we can confirm that the Pollak Trailer Connector Adapter part # PK12-724 is the correct 7-way adapter you need for your John Deere 5205 based on the pictures you submitted.
    view full answer...
    Image 1 for
  • Troubleshooting Pollak Trailer Connector Adapter Not Working With Kioti DK5010 Tractor
    Hi Forrest; because of the way an agricultural 7-way is wired the # PK12-724 is not a good solution. The best thing you can do is run a 7-way blade and connect straight to the trailer. Right now you don't have a brake output pin and it sounds like 12V power is carrying over so the brakes are constantly activated. Also, your tractor will have separate brake light and turn signals which won't work with the Big Tex trailer. To accomplish this you can use the # 337TC1474P along with the #...
    view full answer...
    Image 1 for Image 2 for Image 3 for
  • Need Adapter For Vehicle With A 7-Pin Round Plug And A Trailer With A Standard 7-Way
    Hey Tim, thanks for the pictures. We have exactly what you need. I recommend the Pollak Trailer Connector Adapter # PK12-724. This will plug in to the 7 round pin male plug on your vehicle and allow you to plug the 7-flat female trailer plug into the other end. You may want to use a bracket like part # PK12711U to mount the plug.
    view full answer...
  • Is There an Adapter For 7-Round on Vehicle to 7-Blade on Trailer
    Hi Jim, While we do have an adapter for the 7-round on your Ford that will connect to the standard 7-way on your trailer, though not one that is coil type or 3 feet long. The longest one we have is 14-1/2", the Pollak Trailer Connector Adapter - Vehicle End - 7-Pole Round to 7-Way Blade # PK12-724.
    view full answer...
  • Can Prodigy RF Trailer Brake Controller Fit with 7-Pin Round Connectors
    Hey Matthew! We have an adapter like the Pollak # PK12-724 that's designed to change a 7-Pole Round to a 7-Way Blade style to match what the Prodigy RF # TK94FR has, and then you'd need to use the opposite adapter, part # PK12727, to get it back to matching your trailer. You might consider cutting off your current connectors and replacing them with parts # PK12-707E and # PK12706 to match the RF and industry 7-Way standard plugs, but I do understand the hesitancy in doing this since it...
    view full answer...
  • Is The 7-Way to 7-Way Trailer Connector Extension From Truck to Trailer
    Hey Aaron, We do have an extension for you to go from your truck's 7-way to your trailer's, but the # PK12-724 isn't one of them. This is actually an adapter to go from a 7-way round pin to a 7-way blade, so it isn't an extension. But thankfully, we have exactly what you need, which is the following: - TorkLift Wiring Harness Extension # TLW6024 This will give you a 24 inch extension and yes, it will work just like the factory set up so you're good to go.
    view full answer...
  • Best Way To Connect
    Hello Bill. I do have a solution for you, but the 4-pin round plug is not common, and we do not have an adapter for a 4-pin male to a 7-way female. What I would do it wire the flatbed tow truck with the more standard 4-flat plug like part # HM48205. This will allow you to use the adapter # 30717 which will allow you to plug in your 7-way trailer plug. Keep in mind that this will only operate the brake lights and turn signals and there will be no braking capability.
    view full answer...

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