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Pollak 6 Pole to 4 Pole Connector Adapter

Pollak 6 Pole to 4 Pole Connector Adapter

Item # PK12717
Our Price: $7.15
You Save: 67%
Trailer Wiring
Shipping Weight: 0.12 lbs
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Quickly and easily convert a 6-pole, round pin connector to a 4-pole, flat connector with this RV connector adapter. Adapter has a non-corrosive nylon shell. Great Prices for the best trailer wiring from Pollak. Pollak 6 Pole to 4 Pole Connector Adapter part number PK12717 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (63)
  • Q & A (0)
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Pollak Trailer Wiring - PK12717

  • Wiring Adapters
  • Single-Function Adapter
  • 4 Flat
  • Plug Only
  • 6 Round
  • Pollak

Quickly and easily convert a 6-pole, round pin connector to a 4-pole, flat connector with this RV connector adapter. Adapter has a non-corrosive nylon shell.


  • 6-Pole to 4-pole RV flat adapter
    • Quick and easy conversion of 6-pole, round pin connector on your vehicle to the 4-pole flat connector on your trailer
    • Connects Ground, Left Turn, Right Turn, Stop and Tail Light circuits
  • Non-corrosive nylon shell and insert


  • Application: Vehicles with 6-pole connectors
  • 1-Year limited warranty

This adapter will make the two trailer connectors pictured below work together.

6-Way socket
6-Pole Connector Socket on vehicle
4-Pole plug
4-Way connector on trailer

12-717 Pollak 6-Way to 4-Way Connector Adapter
Replaces 37308
Similar to 37325

Customer Satisfaction Score:

Customer Reviews

Pollak 6 Pole to 4 Pole Connector Adapter - PK12717

Average Customer Rating:  4.8 out of 5 stars   (63 Customer Reviews)

Quickly and easily convert a 6-pole, round pin connector to a 4-pole, flat connector with this RV connector adapter. Adapter has a non-corrosive nylon shell.


This product wooks great. I will do business with this company again



It was a great price and has worked no problems


I used this adapter to connect 4-way auxiliary tail lamps for a hitch-mounted bike carrier to a 6-way winnebago connector. It works fine for marker lights and turn signals but not for brake lights. I think there is a winnebago-specific wiring pattern that this adapter does not cover.



The wiring harness continues to work as I described. It has been durable and weather resistant. I have had it in continuous service for the past year and over 30,000 miles.Overall, it works well and I am pleased.


Worked perfect


perfect fit, exactly what I needed! Fast delivery


You guys are awesome. When I bought my motor home the dealer didn't have anything to adapt to my simple 4 wire setup and after working up a cost to cob a bunch of things together to get lights working on my toad I finally told them no thanks and drove home without lights(it was a daylight run) on your site and found exactly what I needed. I will refer anyone who asks to your site.
Best regards,

Terry B.




Bought this so that I could adapt the 6 pole female plug on my Minnie Winnie motor home to the flat 4 type to pull my little boat trailer behind it. Works perfectly!

Bill L.


Works just fine for what it is intended! Quality product at a good price. Even bought an extra just in case...but in case hasnt happened so just have a spare.


I believe would have worked great. However, I sold car dolly I was going to tow before I got to use it. It appeared compatible with the wiring on my 2000 Minnie Winnie hitch. Hope to use it in the future.


With the price of gas the way it is and I was looking for a way to get a small utility trailer to hook up to my 2010 Goldwing Trike to hall my shrine go kart to go to the parades, this little item came right in to place. Works real well. Thank you so much for the fine plug.


Products arrived promptly and were just as described. No complaints and would order from eTrailer again if they have the item I need.



Still using it one year later. No complaints.


Order processing was fast and accurate. ETrailer contacted me when they found a delay in the original part availability and suggested a substitute. I haven't plugged my trailer into it yet, but fit to the truck connector was precise and connector looks to be of very good quality.


Having previously purchased trailer accessories from etrailer is why I ordered again from them. My experience with this company has been outstanding. Orders are promptly filled, and shipped quickly. Highly recommended!


I have a 6 pin plug mounded in my bumper which works for MY trailer but if I used or rented someone else's trailer, they usually took a 4 flat plug. This will work perfectlly for that situation. Thank you etrailer!


easy to install. worked great with my trailer 3 pin hook up


Works with the three ball mount I can pretty much pull what ever I hook up to.

Dan M.


Perfect...made my life a lot easier when it came to pulling trailers!..On top of the great service when I purchased the item, greta communications as well as a great product!


Your staff was most helpful & nice! I will definitely be a repeat customer!!


Worked perfectly! Instead of replacing the entire wiring harness on my old 98 Chev pickup, I just use this adaptor.


Wire harness for Chrysler van works great. Simple to install and saved a bundle. Thanks


The adapter works correctly, but the alignment strip was a little too large and needed trimmed down to plug into my vehicle. It took 15 seconds with a pocket knife.


i have ordered items from you before and have been satisfied, the only thing i had to do with this adapter was shave a bit off to get my plugs to fit


Used this adapter to plug the lights in to pull my jeep behind our motorhome never had any issues and the lights worked great the whole four week trip


Plugs directly into my vehicle trailer light system. Easy to use.


Good Product. Etrailer has all of the parts you need for your trailer. They have videos if you need help. Parts are of good quality and are sent quickly. I will put them on my list to reorder when I need them again.


This adapter is well made and allows me to connect my boat trailer to my motorhome. etrailer shipped quickly and were great to deal with.


This was exactly the correct adapter. It fits well and was delivered quickly. A very good experience overall.


All of the products I have purchased from etrailer have been high quality and a great value.

Show More Reviews

See what our Experts say about this Pollak Trailer Wiring

  • Availability of a 6-Way Round to 4-Way Flat Adapter
    Yes, if your truck has a 6-Way round connector and your trailer has a 4-Way flat connector, you can use the Pollak 6 Pole to 4 Pole Connector Adapter, item # PK12717, to power all of the lighting on the trailer.
    view full answer...
  • Recommended 6 Pole to 4 Pole Connector Adapter
    I may have a solution for you, however we do not currently have any 4 pin wire harnesses that feature a 6 wire pigtail. If you are needing to convert a 6-Way connector on your vehicle to a 4-Way flat in order to connect with your trailer, I recommend using the Pollak Adapter # PK12717. This adapter will simply plug into the 6-pole, round pin connector on the vehicle to provide a 4-pole flat connector. It will connect the ground, left turn, right turn, stop and tail light circuits. I...
    view full answer...
  • Recommended 6-Way to 4-Flat Adapter for Towing Trailer Behind Itasca Motorhome
    In order to take the separate brake lights and turn signals from your Itasca Motorhome and convert them to the combined circuits for your trailer, I recommend using the Tekonsha Upgraded Circuit Protected Tail Light Converter # 119178. This will be powered by the battery and will install before the 6-Way trailer connection. You can then simply use a 6 Pole to 4 Pole adapter like the Pollak # PK12717 to connect with the trailer. I have included an image that shows the wiring locations...
    view full answer...
    Image 1 for
  • How To Wire Separate Taillight System Into Existing Wiring on 2000 Ford F250
    We have exactly what you're needing. You'll want to use the # 118158 converter. On the INPUT side of the converter, ground the white wire to the truck frame, connect the yellow wire to the left turn circuit and the green wire to the right turn circuit. On the OUTPUT side, the yellow wire connects to the left turn lamp, the green to the right turn and the red wire would be split and connect to the brake lamps. The running lamp circuit would bypass the converter.
    view full answer...
  • Why Does a 6-Way to 4-Way Adapter Only have 4 Contacts
    An adapter such as # 37325 or # PK12717 will only have the necessary pins required by the 4-Way end. These are the basic lighting functions; left/right turn signals, brake lights, and running lights. And the 4th is the ground (the turn signals and brake lights are combined on the same circuit for each side of the trailer). A trailer that uses a 4-Way flat connector does not have the other functions on a 6-Way. If the connector on your 2004 Jeep Grand Cherokee is factory then it is likely...
    view full answer...
  • Tow Ready Tail Light Isolating Diode System for 2005 Honda Element
    The Tow Ready Tail Light Isolating Diode System with 4-Pole Connector, # TR118821, will work for your 2005 Honda Element. This combined diode system features a Y-harness that allows your RV to power the lights on your towed Honda Element without the Honda Element sending electrical feedback to the RV. The 2-diode system does the work of 4 and protects both electrical systems. For the needed 6 to 4 way adapter, I suggest the Pollak 6 Pole to 4 Pole Connector Adapter, # PK12717. Hopefully...
    view full answer...
  • Is 6 Round to 4 Flat Adapter Available?
    There is a connector adapter to convert a round 6 pole to a 4 flat connector, the Pollak # PK12717 for if you are using a wiring kit such as the Roadmaster Universal Hy-Power Diode Wiring Kit # RM-154.
    view full answer...
  • Flat Tow Wiring Harness for a 2017 Jeep Cherokee
    For a wiring harness that will allow your motorhome to activate the taillight on your 2017 Jeep Cherokee, I recommend using the Hopkins Custom Tail Light Wiring Kit for Towed Vehicles part # HM56208. The Hopkins harness is a direct plug and play option that will not require you to cut or splice any wires on your Jeep. If you have a 6-pole trailer connector on your motorhome which most do, then you will also need the Pollak 6 Pole to 4 Pole Connector Adapter part # PK12717. I have attached...
    view full answer...
  • 6-Way Recommendation for Trailer and Tow Vehicle
    For the trailer side 6-way you would want the part # PK11604 and then for the matching socket you would want the part # PK11609. We don't carry any grommets for the vehicle side 6-way that you referenced and the part # 118152 would be a great choice for storing the 6-way.
    view full answer...
  • How to Make 6-Way to 5-Way Flat Trailer Connector Adapter
    A 6-way round to a 5 flat can be made but since the demand for this type of adapter is very low none of our manufacturers offer one. What you would need is 5-way vehicle side with lead like # HM47900 and then wire it to a 6-way plug part # PK11604 and you'd have the adapter you'd need.
    view full answer...
    Image 1 for
  • Recommended Converter For Winnebago To Combine Turn And Stop Signals For Trailer Connection
    To take separate turn signal and brake signals from your motorhome and convert them to combined for your trailer connection, I recommend the Upgraded Circuit protected converter that is powered by the battery # 119178. This will need to be installed before your 6-way trailer connection and will allow you to simply use an adapter like # PK12717. I've attached a photo to help you with wiring locations on your 6-way trailer connector.
    view full answer...
    Image 1 for
  • Adapter to Convert 6-Pole Connector to 4-Pole Connector
    There are many products to adapt a 6-pole round vehicle connector to a 4-pole flat trailer connector. One such item is the Pollak 6 Pole to 4 Pole Connector Adapter, part # PK12717. This nylon housing adapter simply plugs into your 6-pole connector. Another product you might consider is the Hopkins Endurance Flex Trailer Connector Adapter w/ LED Circuit Tester - 6-Pole to 4-Pole, part # HM47320. This adapter includes a 5 inch flexible wire between the 6-pole and 4-pole connectors that...
    view full answer...
  • Converting Separate Turn Signals and Brake Lights on a Motor Home to Combined to Use a Light Kit
    I will be happy to help you out. The separate brake light circuit is going to have to be combined with the turn signals in order to use a light kit with a 4-Pole connector. There is a special converter for this, # RM-732. On the input side you will connect the right turn signal wire to the green lead, the left turn signal wire to the yellow lead, and the brake light wire to the red lead. The converter will properly combine the signals and on the output side you will have green for right...
    view full answer...
  • Using Lighted LED Chevy Bow Tie Hitch Cover on 2005 Chevy Silverado with 6-Way Trailer Connector
    Trailer hitch cover # RP86530 comes with a 4-Way but not an adapter. You would need to order an adapter separately. A 6-Way trailer connector is not too common on vehicles like your 2005 Chevy Silverado. Doublecheck to make sure it isn't actually a 7-Way such as # PK11893. If you do have a 6-Way you can use adapter # PK12717. If it is a 7-Way you can use adapter # PK12716.
    view full answer...
  • How To Wire Tow Vehicle with Separate Brake/Turn Lights to Motorhome with Combined Lights
    It sounds like you need a diode kit, the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit part # RM-15267 or part # RM-154. The Roadmaster Diode Kits will combine the separate brake/turn signal circuits on the vehicle so you can power them from the motorhome with combined brake/turn signal circuits. Once the Roadmaster Diode Kit is installed, the brake light bulb will also double as the turn signal. The main difference between the Roadmaster Diode Kits is that the former has extra...
    view full answer...
  • Trailer Wiring Adapter to Convert 4-Pin Round Vehicle Connector to 4-Pole Flat Type
    Thank you for providing the photo of the 4-pin round trailer connector on your vehicle. We do have two different products that will adapt this connector to a standard 4-pole flat trailer connector. Hopkins offers their adapter # 47465 (that can be used with mounting bracket # 18144) and Custer offers their adapter # ADP001 that does not require a mounting bracket.
    view full answer...
    Image 1 for
  • Wiring for Light Functions on a 2004 Jeep Grand Cherokee Flat Towed Behind a Motor Home
    There are a couple of different ways to add lighting functions on your 2004 Jeep Grand Cherokee so that it can be flat towed behind your motor home. If the motor home has a 6-Pole trailer connector, it would be easiest to use an adapter, 6-Pole to 4-Way flat, like # PK12717. You can then use diode kit, # RM-154. I have included a link a couple of videos that show typical installations of this kit for you to view. Another option would be to use the adapter and a magnetic kit, # RM-2120,...
    view full answer...
  • Parts Needed To Connect a 5-Pin To a 6-Pin Trailer Connector
    It sounds like you need to go from the 6-Pole, Round Pin Connector # PK11604 to a 5-Pole, Round Pin Socket # PK11502. This would require making an adapter using the 6-Pole, Round Pin Socket # PK12720 and 5-Pole, Round Pin Connector # PK11501. If I have this backwards then just use the other parts listed above. It gets confusing with these connectors since you have male connectors inside a female connector so you never really know which one they are referring too. You can use some of the...
    view full answer...
  • Troubleshooting Trailer Wiring of 2006 Dodge Ram 2500 Where Turn Signals do Not Work
    The trailer wiring of your 2006 Dodge Ram 2500 SHOULD have the turn signals already combined since that is the standard wiring and Dodge has always abided by same wiring setups. Your generation of Dodge truck doesn't use traditional fuse/breakers for circuit protection of the trailer wiring and instead has all of that integrated into the TIPM of the vehicle. The only way you can get that reset is by going to a Dodge dealer. We do have a solution that allows you to bypass that if you are...
    view full answer...
  • Wiring an RV with Separate Brake and Turn Signals to a Chevy HHR with Combined Brake/Turn Signals
    Probably the easiest solution is to first use a 6-Way to 4-Way adapter, like # PK12717, and plug the 6-Way side into the motor home. Next, add a light kit to plug into the 4-Way flat part of the adapter, like Magnetic Towing Light Kit, # RM-2120. Mount the lights on a metal surface on the HHR and you have lights for towing your HHR. For a more permanent solution, you could install the Tail Light Isolating Diode System with Wiring Harness, # 38955. After installing the diodes, plug the...
    view full answer...
  • What Adapter Do I need to Convert the 6-Way to a 4-Way on my 2010 Chevy Avalanche for a Hitch Cover
    For a 6-Pole Round connector, you would use adapter part # PK12717. Most of the manufacturers use 7-Pole connectors, not 6. There are 6 flat pins arranged in a circle with a large center post as the 7th contact. In this case, you would use part # PK12716. Check the pictures of the parts I mentioned and you should be able to tell which is on your truck. I just do not want you to end up with the wrong part.
    view full answer...
  • How to Tow a 2008 Mini Coops S with Sport Suspension Behind Motorhome
    Snice your 2008 Mini Cooper S has the Sport suspension you'll need to use a tow dolly to tow your vehicle behind your Winnebago instead of a standard flat towing setup that uses a base plate kit. I recommend going with the Demco Kar Kaddy SS # DM9713045 because it comes with surge disc brakes and has the ability to fold which makes storage at home and the campsite much more convenient. This tow dolly comes with brake lights already and a connector for it as well. Since your RV has a 6-Way...
    view full answer...
  • Tow Bar Wiring to Go From 2023 Coachmen Leprechaun 319MB to 2018 Jeep Cherokee
    The trailer wiring at the rear of a 2023 Coachmen Leprechaun 319MB would be a 7-way. The included umbilical wiring that comes with the Roadmaster Nighthawk part # RM-676 has a 7-way on the RV side so that would match up so you wouldn't have to rewire anything. An easy solution to connect the Hopkins Tow Bar Wiring Kit part # HM56208 that fits your 2018 Jeep Cherokee would be a 6-way to 4-way adapter part # PK12717 and you'd be set without having to rewire anything.
    view full answer...
  • Recommended 6 Pin Round Plug Adapter
    We have several adapters for a 6 pin round plug. It sounds like your 1999 Ford F350 is equipped with a 6 round plug. If so, you can use the adapter # 337TC1067P to go from a 6 pin round to a 7 way. Or you can use # PK12717 to go from a 6 pin round to a 4 flat. If you are looking for an adapter for a trailer with a 6 pin round plug, you can use the # HM47570, which would plug in to a 7 way plug on your truck, and allow you to plug in a trailer end 6 pin round plug.
    view full answer...

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