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Hopkins Trailer Connector Adapter - 7-Pole Round Pin to 6-Pole

Hopkins Trailer Connector Adapter - 7-Pole Round Pin to 6-Pole

Item # HM47445
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Shipping Weight: 0.32 lbs
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This adapter plugs quickly and easily into your 7-way, round-pin, vehicle-end connector to convert it for use with a 6-way round, trailer-end connector. A built-in cover protects the terminals from dust and grime. Lowest Prices for the best trailer wiring from Hopkins. Hopkins Trailer Connector Adapter - 7-Pole Round Pin to 6-Pole part number HM47445 can be ordered online at or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (35)
  • Q & A (0)
  • Videos (1)
  • Photos
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Hopkins Trailer Wiring - HM47445

  • Wiring Adapters
  • Single-Function Adapter
  • 6 Round
  • Plug Only
  • 7 Round - Round
  • Hopkins

This adapter plugs quickly and easily into your 7-way, round-pin, vehicle-end connector to convert it for use with a 6-way round, trailer-end connector. A built-in cover protects the terminals from dust and grime.


  • Adapter converts your 7-pole, round-pin, vehicle-end connector to a 6-pole round connector
  • Built-in cover protects the terminals of the 6-way side from dust and grime when you're not towing a trailer
    • If you use dielectric grease (sold separately), the cover keeps the plug clean for storage
  • Easy-grip design makes installing and removing the plug effortless
  • 90-Day limited warranty

This adapter allows the 7-way, round-pin, vehicle-end connector on the left to work with the 6-way round, trailer-end connector on the right.

7-Way, Round-Pin, Vehicle-End Connector6-Way Round, Trailer-End Connector

47445 Hopkins Trailer Connector Adapter - 7-Pole Round Pin to 6-Pole

California residents: click here

Video of Hopkins Trailer Connector Adapter - 7-Pole Round Pin to 6-Pole

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Hopkins Wiring - Wiring Adapters - HM47445 Review

Today we're going to review part number HM47445. This is the Hopkins Trailer Connector Adapter. It's a 7-pole round pin to a 6-pole round. This adapter will convert your 7-pole round pin that's on the vehicle end to the 6-pole round connector that will be on your trailer. It has the built in cover on the 6-way side which you can remove, it gives access to the 6-round pins. When you're not using it put the cover right on and it protects it from any dust or grime or elements. It also has the nice, easy-grip design you can see right there that you can easily install it and remove it very easily. That should do it for the review on part number HM47445, the Hopkins Trailer Connector Adapter, a 7-pole round to a 6-pole round.


Customer Reviews

Hopkins Trailer Connector Adapter - 7-Pole Round Pin to 6-Pole - HM47445

Average Customer Rating:  4.8 out of 5 stars   (35 Customer Reviews)

This adapter plugs quickly and easily into your 7-way, round-pin, vehicle-end connector to convert it for use with a 6-way round, trailer-end connector. A built-in cover protects the terminals from dust and grime.


Great product in a hard to find configuration – the Hopkins Trailer Connector Adapter - 7-Pole Round Pin to 6-Pole was just the solution for an ongoing problem As always the price was reasonable and the service was excellent Thank you for carrying this product.


Great product,
Great price!

Still works great!
John S - 09/28/2021


Needed to convert fromo an older 7 pin to a 6 pin. This was exactly what I needed. Arrived quickly.


just what i needed


Phone order was a great experience! I had no luck finding what I needed on line, but after calling, I was given a part # to verify online. I requested next day delivery close to the cut off time, but I recieved the order the next morning. The entire experience exceptional.
This is my first experience with etrailer, but not my last.


I was having a hard time finding one of these locally, so decided to order from The price was reasonable and the service was excellent. Will check back here if I need anything in the future.


This product work perfecting for my application. I need to raise the level up to meet my requirement on the trailer mount, and this work . And the delivery was fast even using mail.


Good Quality’s


Just as described. Converts a round 6 pin connector to round 7 pin connection.


The part is good, price as fair and delivery is fast.
The same part would cost the same less the delivery charge locally but it was hard to find in stores. Anyway, thanks to E-trailer we got it on time.


Perfect for converting that 7-Round pin plug into something usable. Solidly built, and the twin wings for removing it from the plug are very handy.


Great product and service with etrailer.


Received the right product in record time so I could take my horses out in my trailer for a great ride!!!!!


This adapter plug is just what I needed and it works great.


Fast service. Wide range of products. Great company.


It has been great--I had a hard time finding a 7 to 6 for my tractor--thanks for making one


Just what I ordered !
Good quality!


Product works great for intended use ! No problems whatsoever ! Quick service.


This product was ordered for a customer with a specific need. We did not use the product ourselves. It arrived in good condition and on time. Thanks


What more can I ask for, the part came correct and in a timely manner


Product was what I was looking for, shipped quickly, and arrived in a timely manner!


Perfect product exactly what I needed. Fast shipping and great service, highly recommended. Thanks


great product at a great price thanks.


As expected , quality product and well packaged. A+


Serves its purpose.

Show More Reviews

See what our Experts say about this Hopkins Trailer Wiring

  • Replacing a 6-Way Trailer Connector with a 7-Way Trailer Connector on a 2000 Chevy Silverado
    First, you can almost never wire by color because there is no standard for wire color/function. You have to test the wires using a circuit tester like # 40376 if needed. Also there are 2 different ways to wire a 6-Way: either the 12 volt hot lead will be in the center or the electric brake output will be in the center. I have included a link to our FAQ article on wiring that shows how the various connectors should be wired. Ignore the colors listed and wire the connector by function....
    view full answer...
  • Will a 7-Way Round to 6-Way Adapter Work with a Semi Tractor
    A 7-way round pin on a semi tractor normally has different functions than a 7-Way round pole found on something like an RV. I have included a picture showing what the functions are on the 7-Way part of the adapter. If this matches what your semi tractor has then it will work properly. If your 7-Way has different functions, which you can check by using a circuit tester such as # 3008, then you will need to re-wire the 7-Way to match the adapter or install a different 7-Way that will match.
    view full answer...
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  • Solution for Towing a Trailer with Round 6-way on Vehicle and 7-Way on Trailer
    Yes, check out the Hopkins 6 Pole to 7 Pole Adapter part # 47435. This is an adapter that will go from a 6-way to a 7-way.
    view full answer...
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  • Availability of 6-Pole to 7-Pole Trailer Wiring Adapter
    We do offer one 6-pole to 7-pole trailer wiring adapter, part # 47435, which converts a 6-pole round (round pin) connector format to an RV blade-type 7-way. I linked our main page for all wiring adapters and you can click on the filters on the page to narrow the selection based on the type of 6-pole connector you are using. I also included a link to an article on trailer wiring that may be helpful to you.
    view full answer...
  • Troubleshooting Trailer Brakes Locking Up with Voyager Controller and Hopkins Trailer Adapter
    I recommend trying to reset the leveling sensor on your Tekonsha Voyager # 39510. I have attached a clip from the instructions to show how this must be done. If you have already tried this and it doesn't work then the next course of action is to test and make sure the brake controller is getting the correct power and that it is operating correctly. Using a circuit tester, make sure that the black wire has constant 12V power and that the red and blue wires only receive power when you step...
    view full answer...
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  • Recommended Adapter To Plug 6-way Trailer Connector To 7-Way Connector On 1998 Dodge Ram 2500
    We have just what you are looking for. If you have a 7-way blade-style connector on your Dodge, you can use part # 47549. This simply plugs into your 7-way on your Dodge and then the 6-way connector from the camper plugs into the adapter. I have attached a helpful article that shows trailer and vehicle connectors and what they all look like.
    view full answer...
  • 7 Pin/Blade Truck Connector to 6 Pin Round Trailer Connection
    If you have a 7 round pin connection on your truck you will need the Hopkins Trailer Connector Adapter # HM47445. If you have a 7 flat blade connection on your truck you will need the Adapter 7-Pole to 6-Pole # 47549.
    view full answer...
  • 7-Way Round Pin to 6-Way Round Pin Adapter
    For a 7-Way round pin to a 6-Way round adapter you can use either # HM47445 or # HM47535. But if the 7-Way round you want to adapt is a big rig 7-Way then this adapter will not work properly because big rig trailer connectors have different functions. I have included a picture of the functions of an RV 7-Way Round pin connector.
    view full answer...
    Image 1 for
  • Does 7-Pole Round to 6-Pole Round Adapter Require Wires to be Connected
    A 7-pole round to 6-pole adapter, the Hopkins Trailer Connector Adapter # HM47445 will not actually require any wires - including the brake wire - to be connected to the adapter. You simply plug one end to your vehicle's 7-round connector and then plug in your trailer-end 6-round to the adapter. If you were referring to connecting wire to the Pollak Heavy-Duty, 7-Pole, Round Pin, Trailer Wiring Connector - Trailer End # PK11700 you would undo the retainer screw at the base of the connector...
    view full answer...
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  • Converting 7-Pole on 2018 Mack Dump Truck to 6-Pole for Trailer
    What you will need to do is plug the Hopkins Trailer Connector Adapter # HM47445 into the 7-Pole on your 2018 Mack and test each pin with a Circuit Tester # 40376 so that you can map out what the functions should be. You will then want to use a 12V power source, like a typical vehicle battery, and test the 6 pins on your trailer. You can then swap any wiring on your trailer connector if need be. If the trailer that you are pulling has the standard trailer side 6-Way setup like the picture...
    view full answer...
    Image 1 for Image 2 for Image 3 for
  • 7-Way Round to 6-Way Round Adapter Recommendation
    Sounds like you are looking for an adapter like the part # HM47445 which will go from a 7-way round on a tow vehicle to a 6-way round on a trailer. I attached a review video for more info on this as well. The adapter you referenced is for a 6-way round to a 7-way blade.
    view full answer...
    Image 1 for
  • Availability of 7-way Round Pin to 7-way Blade RV Style Trailer Connector Adapter
    So you're needing a 7-pole round to 7-way RV (blade) style connector adapter, is that right? We don't have an adapter like that (due to the fact that the 7-way round pin connector is pretty rare these days), so the easiest thing to do would be to replace the existing 7-way round pin connector on your vehicle with a 7-way blade style connector like # PK11893 and a # PK11998 7-way pigtail. Or, if it's still needed, you could leave the existing 7-way round pin connector in place and tap the...
    view full answer...

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Michael H
Expert Research:
Michael H
Employee Adam R
Expert Research:
Adam R
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Tyler C
Written by:
Tyler C
Employee Alexander C
Updated by:
Alexander C

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