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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

ratingratingratingratingrating (27 reviews)

Code:   37995


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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   (27 Customer Reviews)

- 37995

ratingratingratingratingrating by: Richard B.08/11/2013

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


The connector sets I purchased are for inter modular connection on a mobile model railroad. They are working very well. I would hope you might make a connector with more pins, e.g., 8 or possibly 10. I realize the trailer application requires only 6, but the ledger ones might find other applications.

Richard B - 08/13/2014


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ratingratingratingratingrating by: Dan D.08/11/2014

I recently needed a simple trailer plug for a motorcycle. I shopped for the product at a couple of major stores and could not find a six prong connector. I could have kept looking and probably found it but I went to and found it cheaper even with shipping than I could have bought it locally. Thanks etrailer Dan 146062

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ratingratingratingratingrating by: Chuck04/23/2014

Arrived in a timely manner. Ordered at the end of one weekend and it arrived well in advanced of the next. Product will be used as an in-between from my pickup and it's cap (topper). I have a few extra lights and electrical accessories that need to be disconnected when the cap is removed. This one plug makes it simple. 126736

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ratingratingratingratingrating by: JIMM07/08/2011

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 done 18965

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ratingratingratingratingrating by: Rick R10/23/2013

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.........Rick 104839

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ratingratingratingratingrating by: Eric K11/20/2013

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. Eric 107941

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ratingratingratingratingrating by: Douglas04/24/2013

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

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ratingratingratingratingrating by: Scott B09/06/2013

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

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ratingratingratingratingrating by: Ted C.09/15/2013

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

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ratingratingratingratingrating by: Frank08/05/2014

The plugs are exactly what I've been long searching for, to match the old ones on my two trailers. Nobody but eTrailer seems to carry them. Quality looks excellent, too. 144449

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ratingratingratingratingrating by: Michael02/07/2013

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: JB04/09/2014

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

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ratingratingratingratingrating by: Curtis G.05/17/2011

Good products at a good price, web site was easy to navigate, shipping to my address was very expediant. Very satisfied with overall purchase 14584

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ratingratingratingratingrating by: Bob Wrobel02/21/2011

Quick response to order and delivered on time. Can't ask for much more. Thanks 7527

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ratingratingratingratingrating by: gene05/10/2011

recieved in good shape and worked great for my snow plow lights thks 13178

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ratingratingratingratingrating by: Ed L.08/06/2013

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

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ratingratingratingratingrating by: gitrdonedave08/27/2014

the product works perfectly and was very simple to install 149005

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ratingratingratingratingrating by: Monica07/27/2011

The product came quickly and was exactly as advertised. 20367

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ratingratingratingratingrating by: A. Steward07/11/2013

Simple intructions, easy to install. Great product. 88936

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ratingratingratingratingrating by: Lowell07/22/2011

Delivered quickly exactly as advertised. No problems. 19852

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ratingratingratingratingrating by: John P.08/15/2013

Product as described. Speedy delivery. Thanks 95181

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ratingratingratingratingrating by: Khanp03/31/2014

Deliver on time , fulfill my expectatio ns. 122920

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ratingratingratingratingrating by: David M.12/13/2012

Good product...Does what we expect. 61295

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ratingratingratingratingrating by: Carl08/30/2013

As described. Have not yet used. 97590

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ratingratingratingratingrating by: Ed L08/23/2013


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ratingratingratingratingrating by: Mike B.03/07/2014

Good overall quality 119771

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ratingratingratingratingrating by: Gary01/16/2013

Just what I needed 63269


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

  • 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,...
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  • Making a 6-Way Square to 4-Way Flat Trailer Wiring Adapter for a Motorcycle and Trailer
  • Your question is perfectly clear, and it is one that has come up before. Putting a 4-Way flat on the trailer is easy enough. You can use a trailer side 4-Way and splice it to the existing trailer wiring by function. The adapter for the 6-Way square to 4-Way flat is going to require a little more work. I recommend starting with the 6-Pole Square Trailer Wiring Connector Kit, # 37995. You will need the end that plugs into the vehicle side to make an adapter. You can then use Quick...
    view full answer...

  • Installing a Brake Controller on a 2010 Hyundai Santa Fe with Factory Tow Package
  • To install the Tekonsha brake controller on your 2010 Hyundai Santa Fe, you will first need a 4-Way trailer connector if you do not already have one. The Valley Custom Fit Vehicle Wiring, # 30159, that you have referenced will fit your Santa Fe if the Hyundai Santa Fe came with Factory Tow Package. If it did not, then use harness # 118415. I have included a link to the installation details below. I recommend switching the plug on the trailer from a 6-Square to a 7-Way. You can use part...
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  • How to Make a 7-Way to 6-Way Square Jayco Trailer Connector Adapter
  • There is no adapter available that will go from a 7-Way vehicle side connector to a 6-Way square Jayco connector. You will need to make one using the follow parts: 7-Way trailer connector # H20042 6-Pole Square Trailer Wiring Connector Kit, # 37995 Start by identifying the wire functions of the trailer side connector so that it will be easier to wire in the 7-Way later. Connect the 7-Way wires on H20042 to the vehicle side connector in # 37995 based on function. On the H20042: the...
    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...
    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,...
    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...
    view full answer...

  • Adapting a 6-Way Trailer Connector to a 6-Way Square Connector
  • Your best bet would be to remove the square connector on the camper and replace it with a 6-way connector, item # PK11604, to correspond with the connector on your truck. If you do not wish to do this, you could fabricate an adapter using a 6-Way Trailer End Connector, part # PK11604 and a 6-Pole Square Trailer Wiring Connector Kit, part # 37995. You will want to make sure to wire the connector so that the vehicle and trailer side are wired identically. LOCATE WIRES BY FUNCTION ONLY White...
    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...
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  • 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...
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  • 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...

  • How To Wire 6-Way Square Connector on 2000 Viking Popup to 2001 Mazda Tribute With 4-Way Flat
  • I do have a few solutions to wire your 2000 Viking with 6-way Square to your 2001 Mazda Tribute 4-Way flat. The first option would be to cut off the 6-way connector on your Viking Popup Camper, and wire in a 4-way connector by function. You will want to use Hopkins Endurance 4-Way Flat Trailer Connector - Trailer End - Ergonomic Design. part # HM48110. To wire, you will want to wire the labeled color wire on part # HM48110 to the matching wires on your trailer. Another option would...
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  • Wiring a 6-way Jayco Connector on a 2004 Hyundia Santa Fe
  • The Adapter 4-Way Flat to 6-Way Square for Jayco, item # 30104, will work with your Jayco trailer but you will not have power for your auxillary connection or your trailer brakes. One option for you to have power to all of your trailers electrical functions is to use the 6-Pole Square Trailer Wiring Connector Kit (Car and Trailer Ends), item # 37995, and splice into your vehicles 4-way wiring for the taillights and hard wire the two remaining circuits. If you have two vehicles that...
    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...
    view full answer...

  • 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,...
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  • Does Hidden Hitch 4-Way Flat to 6-Way Square Wiring Adapter # 30104 Work Only on Jayco Trailers
  • The Hidden Hitch 4-Way Flat to 6-Way Square Wiring Adapter, part # 30104, is intended specifically for Jayco trailers that use the 6-way square type connector. The adapter is wired to transfer tow vehicle lighting signals to the appropriate pins on the 6-way square connector to operate Jayco camper lights. For connecting your vintage Bethany camper to your tow vehicle with 4-pole flat connector you can fabricate an adapter harness from two parts. You will need to order parts # 37995...
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  • 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...
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  • 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...
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  • 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...
    view full answer...

  • Availability of a 7-Way to 6-Pole Square Adapter for a 2008 Dodge Nitro
  • I am sorry but at this time a 7-Way to 6 Pole square adapter is not available. You do have 2 options though. You could rewire the trailer connector to a Pollak Black Plastic, 7-Pole, RV-Style Trailer Connector - Trailer End, item # PK12706, using a circuit tester to verify each connection that needs to be made. You could also build your own adapter to go between your vehicle and trailer. Use the 6-Pole Square Trailer Wiring Connector Kit (Car and Trailer Ends), item # 37995, and...
    view full answer...

  • Adapting 6-Pole Square RV Connector to 4-Pole Flat Connector for Use With MaxxTow Lights # MT70097
  • There is no plug-in adapter available to mate a 6-pole square RV connector directly to a 4-pole flat connector, but we do offer a 6-Pole Square Trailer Wiring Connector Kit, part # 37995, that can work for you as long as you do not have a Jayco RV (which can have compatibility issues with this part). Hopkins Connector Kit # 37995 includes both male and female connectors. You can cut off the 4-pole flat connector from the MaxxTow Magnetic Light Kit and splice in the male 6-pole connector...
    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...
    view full answer...

  • How to Adapt 6- Way Connector on Camper Trailer to 4-Way Connector on Vehicle
  • If the camper is a Jayco, we offer an adapter which is part # 30104. If it is not a Jayco camper, you can construct one using just a few parts. Use part # 37995 along with the 4-pole trailer end connector, part # 18004. Plug the female portion of the 6 way connector into the trailer, cut the connector off of the other end and attach the green directional/brake light wire to the green wire on the 4 way, match up the yellow, brown, and white wires and connect them together, as well. Connecting...
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  • Six Pole Trailer Connector Vehicle and Trailer Ends for a 1995 Coleman Pop Up Camper
  • The Curt 6-Pole square wiring connector loop # C58034 is only available in the 12 inch length. It should work with your 1995 Coleman pup. The Jayco square plug was the one oddball and if you had a Jayco this harness likely would not work properly but for a Coleman it should be fine. We also have # 37995 which is a trailer and vehicle end. The wires on it are 11-3/4 inches long for each side for a total of 23-1/2 inches.
    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...
    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...
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  • 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...
    view full answer...

  • Replacement 6-Way Round Trailer Side Connector for 1978 Reddale Camper
  • If I had to guess I would say the 2 wires together are for the running lights, one for each side of the trailer. The brake lights must be on the same circuits as the turn signals which is common for trailers. It sounds like you know what the basic lighting functions are for the wires that you have. You can always double check using a circuit tester such as # 3808 or power each wire and see what activates using a separate 12 volt battery. If you just want a 6-Way round that you can attach...
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  • Wiring Functions for the 6-Pole Square Trailer Wiring Connector Kit # 37995
  • On the 6-Pole Square Trailer Wiring Connector Kit # 37995 the white wire is the ground. Brown is running lights Green is right turn Yellow is left turn Blue is brakes Red is brake lights On a 6-Way that has combined brake light and turn signal it is usually the red wire that will be 12 volt power and the green and yellow wires will have turn signal and brake light functions. However you cannot go by color when wiring up a new harness or harnesses. You have to go by the functions...
    view full answer...

Info for this part was:

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