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Wiring > Wiring Adapters > Single-Function Adapter > 6 Square > 6 Square > Plug and Lead > 1 Foot Long > Hopkins


6-Pole Square Trailer Wiring Connector Kit (Car and Trailer Ends)

Hopkins Wiring

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Code:   37995

Price:$5.99


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Hopkins Wiring - 37995

6-Pole Square Trailer Wiring Connector Kit

  • Square Design 6-Pole
  • Includes Both Male and Female Ends for Car and Trailer
    • Wire leads on each trailer and vehicle end measures 11-3/4"
    • Pigtail wires are 18 gauge

TAP # 37995 / Hopkins # 47995






Customer Reviews

6-Pole Square Trailer Wiring Connector Kit Car and Trailer Ends - 37995

Average Customer Rating:  ratingratingratingratingrating4.8 out of 5 stars   (23 Customer Reviews)




- 37995

ratingratingratingratingrating by: Eric K11/20/2013

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Perfect product. Upon arrival, realized it was exactly what I wanted. Perfect device for hooking up unique lights. I used it to wire lights with separate turn signals and reverse lights. Can't wait to get them wired up and functioning. Thanks etrailer. Eric107941



- 37995

ratingratingratingratingrating by: Rick R10/23/2013

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This plug is hard to find, and of course etrailer handles it. Needless to say, I'm glad they handle it!!! Shipped quick and it was exactly as advertised. You can get the half of the plug I needed on Amazon for three times the cost of both halves at etrailer. Thanks.........Rick104839



- 37995

ratingratingratingratingrating by: Richard B.08/11/2013

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This product replaces several of types of connectors, e.g., cinch-jones and other 6 wire types. It will be used to connect model railroad show modules. I was looking for a reasonably rapid insertion and disconnect and good conductivity. Power is low power DC, so the wire is more than adequate. I also needed a reasonable drop so as not to strain the terminal strip (barrier) connection. These, I believe, will work well. I hope this helps.94467



- 37995

ratingratingratingratingrating by: Douglas04/24/2013

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Just what I ordered, delivered very fast, and the communication and professionalism after placing the order is the best. It is a joy to do business with e-trailer and I recommend the company every chance I get.77633



- 37995

ratingratingratingratingrating by: JIMM07/08/2011

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I odered several items so I could use my camper trailer with my new truck including a connector kit, a 7 blade connector, and a ball mount and ball. i recieved them fairly quickly all in all and in good shape. The items were all excellent quality,well priced and will do the job I need done18965



- 37995

ratingratingratingratingrating by: Curtis G.05/17/2011

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Good products at a good price, web site was easy to navigate, shipping to my address was very expediant. Very satisfied with overall purchase14584



- 37995

ratingratingratingratingrating by: gene05/10/2011

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recieved in good shape and worked great for my snow plow lights thks13178



- 37995

ratingratingratingratingrating by: Monica07/27/2011

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The product came quickly and was exactly as advertised.20367



- 37995

ratingratingratingratingrating by: Lowell07/22/2011

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Delivered quickly exactly as advertised. No problems.19852



- 37995

ratingratingratingratingrating by: Bob Wrobel02/21/2011

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Quick response to order and delivered on time. Can't ask for much more. Thanks7527



- 37995

ratingratingratingratingrating by: JB04/09/2014

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I can not say enough good about the price, quality, and timely order fulfilment that etrailer provides, I would not hesitatate to recommend etrailer to anyone.124390



- 37995

ratingratingratingratingrating by: Khanp03/31/2014

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Deliver on time , fulfill my expectatio ns.122920



- 37995

ratingratingratingratingrating by: Mike B.03/07/2014

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Good overall quality 119771



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ratingratingratingratingrating by: Ted C.09/15/2013

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As pictured, and a fair price. Arrived quickly and in good condition. I ordered this in error for my application. I will be able to make use of this in the future, however.100030



- 37995

ratingratingratingratingrating by: Scott B09/06/2013

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I use these not for trailers but for hooking up multiconductor cables on ham radio antenna rotors. They work well. Use dielectric grease on them. They last well and are easy to plug and unplug.98702



- 37995

ratingratingratingratingrating by: Ed L08/23/2013

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GREAT PRODUCT FAST DELIVERY 96666



- 37995

ratingratingratingratingrating by: John P.08/15/2013

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Product as described. Speedy delivery. Thanks95181



- 37995

ratingratingratingratingrating by: Ed L.08/06/2013

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Just what I needed in a timely fashion. Great product. Thanks.93657



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ratingratingratingratingrating by: A. Steward07/11/2013

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Simple intructions, easy to install. Great product.88936



- 37995

ratingratingratingratingrating by: Michael02/07/2013

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Product quality was excellent. Vendor processed order without delay and made prompt delivery. I would recommend etairler to anyone in the market for trailer parts.65222



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ratingratingratingratingrating by: Gary01/16/2013

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Just what I needed 63269



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ratingratingratingratingrating by: David M.12/13/2012

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Good product...Does what we expect. 61295



- 37995

ratingratingratingratingrating by: Carl08/30/2013

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As described. Have not yet used. 97590



Ask the Experts about this Hopkins Wiring
Expert Answers about 6-Pole Square Trailer Wiring Connector Kit (Car and Trailer Ends) - 37995                                             Do you have a question about this Wiring?


  • Adapter for Jeep Grand Cherokee 6-Pole to 7-Pole
  • We do not have an adapter that will work, but we do have the parts to make your own. This will allow you to plug in your square 6-Way trailer connector to the round 7-Way vehicle connector. You will need to purchase two parts to make this work for your Jeep Grand Cherokee. First you will need the 6-Pole Square Trailer Wiring Connector Kit, product number 37995. You will be able to split this item, and wire it to work with the 7-Way Trailer Connector, either metal, item PK12702, or plasti
    view full answer...

  • 6 way square to 4 way flat connection not working on 1997 Dutchman Pop-UP Tent Trailer
  • As long as your vehicle is wired properly, Green right turn and stop, Yellow left turn and stop, Brown running lights and White ground, then you will have to figure out how the trailer is wired. If the adapter you are talking about was purchased and not hard wired then it could be the 4-way flat to 6-way square adapter for a Jayco RV, item # 30104, and those adapters are wired differently than most other trailers with 6-way connectors and this could be why your lights are not functioning properl
    view full answer...

  • What is the Wire Gauge on the 6-Pole Square Trailer Wiring Connector # 37995, for a 1993 Saturn SW2
  • I went out to the warehouse and grabbed one of the 6-Pole Square Trailer Wiring Connectors, item # 37995, and all of the wires are the same 18 gauge wires. I agree with you that a larger wire would be the best way to go for installation of a power wire to a trailer. The 18 gauge wiring is used to match the trailer wiring these connectors are installed on. I would change the trailer connector to match my vehicle by using a 6-Way Molded Trailer Wire Connector, item # 50-61-104, or a 7-Way Molde
    view full answer...

  • Converting 6-Way Square to 4-Way Flat on a Honda Odyssey
  • There are a number of wiring situations for the 6-Way square connector. Your trailer may have a battery, trailer brakes and/or backup lights, along with the tail lights, left stop and turn light, right stop and turn light and ground wire. You said your trailer has a battery. If the battery circuit was somehow connected to the vehicle lighting circuits, you may have damaged the converter attached to the trailer wiring harness that switches the Odyssey 3 wire system down to the trailers two wir
    view full answer...

  • Connecting a Coachman Pop-Up Trialer with 6-Way Square Connector to a Vehicle with a 7-Way RV
  • To use your trailer with a vehicle that has a 7-Way connector installed on it you would be best suited to just use the Pollak Black Plastic, 7-Pole, RV-Style Trailer Connector - Trailer End, item # PK12706, and hard wire it directly to the wires on the trailer. You will then have the functionality needed to provide power to the trailer brakes and have power to maintain a battery on the trailer if it is so equipped. Another advantage is that you will have no need for an adapter between the
    view full answer...

  • Where To Connect 2 Extra Wires From 6-Way Connector On Motorcycle Trailer To 4 Wires On Motorcycle
  • I looked up the Escapade motorcycle trailer and it showed the six wire colors as being: White - Ground Brown - Taillights Yellow - Left Turn Green - Right Turn Red - Brake Circuit Black - Accessory Terminal on Bike You will want to use a circuit tester like the Quickee Tester, part # 3808, and test the function of the four wires on your motorcycle. They will most likely be ground, taillights, left turn/brake, and right turn/brake. You will want to wire the black wire on the trailer
    view full answer...

  • How to Install the Hopkins 4 Pole to 6 Pole and 4 Pole Wiring Adapter # 37175 on a 2002 Dodge Ram
  • Since you have a battery on the trailer you will want to use something larger than a 4-Way connector. A 4-Way will only supply lighting on your trailer. It will not be able to provide a wire to charge your trailer battery. I would recommend to use the Hopkins 4 Pole to 6 Pole and 4 Pole Wiring Adapter, part # 37175. This adapter will install on your vehicle and allow you to have a 6-Way connector and also a 4-Way connector. You would plug in the 4-Way on your vehicle to the back of this adapt
    view full answer...

  • Adding a Trailer Wiring Harness to a 2002 Dodge Durango to Tow a 1996 Jayco Trailer
  • We can get you set up to tow your Jayco trailer with the 6-Way connector. First, on your 2002 Dodge Durango, you will need to install Tow Ready Custom Fit Vehicle Wiring, # 118334. I have included a link to the installation details and a link to a video showing a typical installation for you to view. The 6-Way square plug is a rarity. What I recommend is replacing the 6-Way on the trailer with a 7-Way RV style connector. It will be fairly simple. You will just need a 7-Way connector, # PK127
    view full answer...

  • Converting a Trailer with a 6 Square Connector to a 4-Way Flat Trailer Connector
  • If the trailer is a Jayco trailer, you will just need Adapter # 30104, to go from the 4-Way flat on the 2006 Honda Odyssey to the 6 square on the trailer. If the trailer is a different brand, this adapter will not work. Instead, you will need to convert one of the connectors to be compatible with the other. If you convert the trailer, the other 2 functions on it will be lost unless you converted it back again. If you converted the vehicle, it will only be compatible with trailers that have a
    view full answer...

  • Connecting 6-Pin Square Connector on Harley Bike to 5-Pin Round Connector on Trailer
  • If the 6-pin square connector is the factory connector on your Harley I would recommend keeping the 6-pin and using the Hopkins 6-Pole Square Trailer Wiring Connector Kit, part # 37995 you have referenced and plug the trailer end connector in the kit into your 6-pin square on your Harley. Then, wire the pigtail wires on the other end of the trailer end connector to the Pollak 5-Pole, Round Pin Trailer Wiring Socket, part # PK11502. You will need to use a circuit tester like the Quickee Tester,
    view full answer...

  • Troubleshooting Left Turn Signal on Dutchman Duck Pop-Up Camper
  • The Jayco Adapter you mention, part # 30104 will only work with Jayco campers. It sounds as if you have two separate issues going on. The issue with all of the lights flashing is caused by an insufficient ground connection. Check the ground connection for the trailer connector on the tow vehicle, make sure it is connected securely to non-corroded metal. The camper itself will also have a ground connection, usually on the trailer tongue. Follow the white wire back toward the camper from the tr
    view full answer...

  • How to Make a 6-Way Square to 4-Way Flat Trailer Wiring Adapter
  • The 6-Way square trailer connector is not used by a lot of trailer manufacturers. A lot of Jayco trailers may have them but mostly you come across the 4-Way flat, like what you have on your trailer, and the 7-Way blade for RV applications. What I recommend is to convert the 6-Pole on the Monaco to a 4-Way. You can do this very easily by removing the 6-Way plug, and then testing the wires for function using a circuit tester like # 3808 if needed before installing them in a new 4-Way, # HM48030
    view full answer...

  • Trailer Wiring Adapter for a 2012 Harley Trike To Tow an Escapade Motorcycle Trailer
  • I did some research and found that the Escapade trailers use a square 6-Way like # 37995 that you have referenced. From what I could find, the Harley trikes use a round 5-Way. No matter what is on the bike you will need to change one connector or the other. If it is easier to change the trailer side, you will just need to use a trailer side 5-Way that matches the bike 5-Way. If it is round, we have # PK11501. You will need to remove the plug on the trailer and attach the wires from it to the
    view full answer...

  • Running Lights Do Not Work on Yakima Rack and Roll Trailer Pulled with a 2008 Saturn Vue
  • The first step I would take is to check the vehicle side and trailer side connectors for any corrosion or dirt build up that could cause a bad connection and clean it out. If the connectors look clean, then you should use a circuit tester, # 40376, to check the trailer connector on the back of your 2008 Saturn Vue. Make sure you are getting a signal at each pin when that function is activated. I have attached a video of my co-worker testing a 4-flat trailer connector for you to reference.
    view full answer...

  • Trailer Hitch Wiring Recommendation for a 1998 Jayco Pop-Up Trailer
  • Yes, you could use the 6-Pole Square Trailer Wiring Connector Kit # 37995 on your 1998 Jayco Pop-Up trailer. If you have a 4-way on your tow vehicle you may also be interested in purchasing a Adapter 4 Way Flat to 6 Way Square for Jayco # 30104. With this product you could just plug this into your tow vehicle and then into your trailer and you would be ready to go. By doing this you will lose 2 functions of the trailer wiring, most likely one of them being a 12-volt power source.
    view full answer...

  • Troubleshooting 4-way Wiring on a 2001 Ford F-150 and 6-way Wiring on a 1989 Jayco J Series Trailer
  • I would suggest checking all the fuses on your vehicle and make sure they are in proper working order. Then using a circuit tester like the Quickee # 3808 to test the signal at the truck 4-way and make sure that the trailer is getting the proper signal when the functions are activated. If you are not getting the proper signal from the 4-way a replacement kit for your truck would be Curt # C55256. This wiring harness is a T-one style that plugs directly into your OEM wiring harness. If your tr
    view full answer...

  • Parts Needed to Add a 7-Way Connector and Trailer Brake Controller to a 2000 Ford Expedition
  • There are actually a few places the factory connection point can be for a brake controller on your 2000 Ford Expedition. While it should be in the place indicated in the video I have linked, in other Ford vehicles it is found elsewhere: The harness will be located under the dash near the center console on most vehicles. The harness for the Ford Full Size Van is located underneath and left of the steering column. The harness for the Ford Explorer/Mercury Mountaineer is located behind the vehic
    view full answer...

  • Wiring a Camper with Combined Brake and Turn Signals to a 2003 Chevy Silverado
  • Trailers and campers typically have what is called a 2 wire system: the brake lights and turn signals on each side are combined. Even though many vehicles have turn signals that are separate from the brake lights, the tow package wiring on the vehicles is already converted. If you are trying to tap into the vehicle wires and not a trailer connector then that would be what the problem is. You would need to use a converter, # RM-732, to take the separate turn signals from the truck and combine
    view full answer...

  • 6-Way Trailer Wiring Harness on an Escapade Trailer Towed by a Motorcycle
  • The red wire should be brake lights and the black wire 12 volt power. But since there is no standard for wire color, it could be the other way around. The best way to determine the functions of the wires on the bike side would be to use a circuit tester such as # 3808. After you verify the functions on the bike side you can trace the wires from the trailer connector to where they terminate on the trailer to determine its functions. From what I have learned there is a power wire on the Escapa
    view full answer...


Info for this part was:


Photos by:
Jackie C

Expert Research:
Michael L

Expert Research:
Robert G

Expert Research:
Michael H

Expert Research:
Jeff D

Expert Research:
Jameson C

Expert Research:
John H

Expert Research:
Rachael H

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