Adapter 4 Pole to 6 Pole and 4 Pole Trailer Wiring Adapter
(59 reviews)
Price: $41.35
In Stock
Adapter 4 Pole to 6 Pole and 4 Pole Trailer Wiring Adapter
Item # 37175
Retail:$56.46
Our Price: $41.35
You Save: 27%
In Stock
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- All Info
- Reviews (59)
- Q & A (0)
- Videos (2)
- Photos
Hopkins Trailer Wiring - 37175
- Wiring Adapters
- Multi-Function Adapter
- 6 Round
- 4 Flat
- Plug and Lead
- 4 Flat
- Hopkins
Adapter converts from 4 pole wiring on vehicle to 6 pole round plug and 4 pole flat. Additional wire leads for brake and an accessory.
- 4 Pole to 6 pole and 4 pole vehicle side trailer wiring adapter
- Includes mounting bracket
- Includes 3 wire leads
- Blue - for electric brakes - center pin
- Red - for auxiliary or hot lead - outside pin
- White - for the ground
Note: The white wire must be grounded to the vehicle frame. The other two wires can be tied up if they are not going to be used.
47175 Adapter 4 Pole to 6 Pole and 4 Pole Trailer Wiring Adapter
California residents: click here
Video of Adapter 4 Pole to 6 Pole and 4 Pole Trailer Wiring Adapter
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Video Transcript for Hopkins Wiring - Wiring Adapters - 37175 Review
Today we're going to be taking a look at the Hopkins Wiring Adapter. This adapter converts your vehicle from just a four pole flat to a six pole round and a four pole flat. It's going to provide additional wire leads for brake and for power. It's going to come with your mounting bracket and it's going to come with the necessary hardware to get that installed. This set of hardware over here, this is going to actually be to get the connector installed onto the bracket. This set of hardware right here would be to get the bracket installed onto the vehicle. You notice the wires that we have coming out the back here. We're going to have a red wire with a butt connector attached to it.
That's going to be for auxiliary or hot lead. That's the outside pin. You're going to have a blue wire with a butt connector on it, that's going to be for your electric trailer brakes. That's going to be a center pin connection, and then you're going to have a longer wire. This is your white wire.
It has a ring terminal attached to it and that's going to be for your ground. Now each lead, again it's going to have connectors on it that's going to make connecting very quick and easy. Please note that the white wire must be grounded to the vehicle frame. The other two wires can be tied up if they're not going to be used. You can wrap them up in tape and zip tie them to the frame so they're up and out of the way. Those are optional, but again they are pre-wired into the six pole connection, or the six pole connector in case your application needs to use those. Again red is going to be power lead or auxiliary, and blue is for your electric brakes.
It's also a good idea to use some grease on your connection points to help prevent corrosion. Right here on the connector you're going to have a flap that has a nice spring lid on it. It also has a seal on the inside so it's going to keep out dirt and moisture. That's fully opened so you can easily make your connection there for your six pole. Then on this side you're going to have a dust cap that's going to cover up the four-way connector. That's going to do it for today's look at the Hopkin's wiring adapter.
Again the adapter's going to convert your vehicle from just the four pole flat to a six pole round and a four pole flat connector.
Customer Satisfaction Score:
86% were satisfied with this product
14% of customers were not satisfied
- Wrong item was ordered
- etrailer mistake
- Did not arrive in time
Customer Reviews
Adapter 4 Pole to 6 Pole and 4 Pole Trailer Wiring Adapter - 37175
Average Customer Rating: 4.8 out of 5 stars (59 Customer Reviews)
by: Matt04/27/2022
This adapter really cleaned up the installation and connected directly to the wiring harness. Maybe added an additional 20 mins to install this adapter but totally worth the time and money.
by: Ed06/26/2019
II use it on my towed vehicle behind the motor home. It allows me to take motor home power to a trickle charger in the towed vehicle and connect to the towed vehicle wiring. The four prong receptacle provides outlet to be used if there is ever in need for a four prong fitting good.
by: Jerry06/13/2019
Pulled our popup camper all over Michigan from Tawas to Drummond Island with no hickups with lighting. We also pull a smaller trailer with the four prong plug, also with no problems. Its nice that these plugs stay covered so as to not let salt/grime into plugins. Great products in my opinion. Had for just over one year with no problems at all. We had these installed by local reliable installers and wouldn't change anything.
by: Dave S11/25/2016
Draw-Tite 75726 hitch fit perfectly and looks great.
Instructions from manufacturer regarding 2013 Highlander driver's side splash panel removal and then not use: it was easy to cut an 8" longer slot in the splash panel and reinstall, which retains the bumper and fender integrity.
The 37175 4 & 6 pole adapter is a clean look and very handy using the different trailer hookups.
The 118449 T wire harness hookup is a no hassle, no brainer and works perfectly
Etrailer will my business on my next vehicle needing towing equipment!
by: Tony B.05/09/2015
The adapter was easy to install and looks great on my 2011 Toyota Corolla. It allows me to tow my small motorcycle camper and my utility trailer with the car, truck or the motorcycle without changing the existing wiring on either one. Etrailer shipped the order in very good time and kept me informed of the order status until it arrived a my door.
by: Bruce T.03/02/2017
This should have been an easy install, but it wasn't. There is nothing wrong with the part and should work well in most situations. However, in my situation, I installed the Curt Class III custom hitch which allows for keeping the full size spare tire. Unfortunately for installing this part, there was no room if the mounting bracket was used - the hitch was in the way.
So, I drilled a hole through the bumper and installed it there. This took more time than the instructed install, but in the end it works great and there is no worry of wires rubbing or wearing through. See picture.
by: Travis08/24/2016
We have had our hitch and wiring harness for about a year now and its still performing great. This site sells great products and we will definitely be back to buy more when ever we need it!
by: Brad D11/15/2020
This item was used to reair an existing unit mounted on my Toyota Tacoma. Although it initially worked very well I thought the 4 pole connector was not sturdy enough for my use. After having a pin break out when the plug was snagged I changed to the 6 pole connector and have been very satisfied.
by: Jonathan J.04/21/2015
Product was easy to install. Comes with bracket, which is nice, but I didn't use, had a place already built in to the hitch. Had it installed in less than 10 minutes. e-trailer kept me informed through the whole shipping process, and they have great how-to videos.
by: Richard C.09/11/2011
This kit was an excellent addition to the general hookup kit as it provides wiring options for different trailers and is very simple to install, including excellent instructions. I highly recommend this kit.
by: John T04/30/2012
This is my second purchase from ETrailer. The product I ordered shipped out on time and arrived in good condition. The folks at ETrailer set me out a shipping tracker and notifcation.....very helpful! I would recommend ETrailer to anyone looking for trailer parts or accesories. Products are high quality and prices are great! Keep up the good work!
by: Carl D02/27/2012
I installed this on an aftermarket replacement bumper I bought after someone collided with my factory bumper (thank you very much whoever you were). Installation was a snap into the pre-drilled hole in the bumper. Just used some dielectric grease on the contacts, wrapped with electric tape, zip-tied to secure, and did a quick tap into the frame for the ground.
by: Keith02/28/2019
Works like a charm. Wired to connect to motorhome. All features working.
Keith C.
3/1/2020
Installed it, connected it, its working just as it should
by: Michael06/07/2019
Great product that works well with the standard wiring harness for the car. This worked great with my 1963 Aloha trailer that uses the 6 pin configuration.
by: DRid08/05/2015
Ordered a 4 to 6 pole trailer wiring adapter. It was perfect, as was the service, delivery time and follow up.
by: Ron07/01/2019
This product is great and works good, easy to install, fits ext. wire harness like a glove.
by: Jeffery 11/17/2022
Always amazing every time I purchase from here. Fast shipping Way to go
by: Steve04/18/2019
eTrailer is a great company that sells good products at a reasonable price. In addition, they are very helpful in selecting products and providing post sale support. As for the product... it’s just what I was looking for. Perfect!
by: Ned 04/01/2020
This was the perfect harness for my vehicle. Installed easily and has made a great deal of difference. Excellent customer service as well.
by: kyle11/15/2016
the wiring works fine but the spring does not hold the cover closed on the 6 pole side. i tried bending the spring but when you open it up it re bends the spring. mine could have been a defect but would have given 5 stars if it wasn't for the spring
by: Paul S06/18/2015
This plug is exactly what I needed. And for a good price. Easy installation. Saves the work of having to do all the wiring when I already have a flat 4 plug
by: Mike05/28/2019
Product shipped quickly and was exactly as described. It mounted to my Wrangler in just a few minutes of work.
by: William11/15/2021
A perfect replacement for a damaged plu g.
by: Mike11/10/2016
Quickly shipped and great value. Very easy to mount and saves time by having two plugs available and not having to switch when using round plug. Great seller and very good product.
by: Thomas T.12/02/2013
The product is ok, the only problem is the spring of the plastic cover of the plug is not strong enough to close the hole. After few times open/close it gets loose...(not close tight)
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Show More Reviews
See what our Experts say about this Hopkins Trailer Wiring
- Availability of 6-Way/4-Pole Trailer ConnectorI don't have a plug-in adapter available, but I do have some solutions that would provide you with a functional 6-way and a 4-pole. Option one would involve removing your existing 6-way and installing part # 37175. Cut the 4-pole plug off the 37175 and wire it as follows: Blue - for electric brakes Red - for auxiliary or hot lead White - for the ground Yellow - left turn/brake lamp Green - right turn/brake lamp Brown - running lamp Or, you can completely remove your existing 6-way,...
view full answer... - Will the 4-Way to 6 Pole Adapter # 37175 Fit a 2000 Ford F-150 with Factory 4-WayThe protective cover on the Adapter, # 37175 should not interfere with the standard 4-Way on your 2000 Ford F-150. It may be snug at first but you do want a tight connection. I have included a link to a video review of this harness for you. In order to make the 6 pole fully functional, you will need to hardwire in the remaining wires on the adapter. You must ground the white wire to the vehicle frame using the white wire on the adapter. The blue wire will connect to a brake controller....
view full answer... - Wiring Adapter for Charging a Trailer Battery with a 2008 Subaru OutbackUsing the existing 4-way connector to power your battery is not possible, as each circuit on that connector will already be used for the trailer wiring. Your trailer has what we refer to as a 7-way trailer connector (6 slots plus the center pin). We offer an adapter, part number 37185 that will convert your existing 4 pin connector to the 7-way. These connections are standard, but to power the trailer battery, you will need to run a wire from the black lead on the adapter to the vehicle's...
view full answer... - Installing Trailer Wiring and Adding a 6-Way Adapter to a 1989 Volvo 240 Series WagonYou are correct. We do recommend the Upgraded Circuit Protected Taillight Converter Hardwire Kit, # 119178KIT, for your 1989 Volvo 240 Series Wagon. Vehicle specific installation instructions are not available due to the fact that this harness fits many vehicles. But there are general instructions which I will outline below. First, you will need access to the wiring behind each tail light. Starting on the left (driver) side, you will need to find a place to mount the converter box. Then,...
view full answer... - Wiring Adapter to Connect Vehicle 4-Pole to Trailer 6-PoleWe do offer adapters to allow you to connect a truck with a 4-pole flat trailer harness to a trailer with a 6-pole connector. These and other formats for trailer wiring are shown in the linked article. Note that there are two types of 6-pole connectors, the round type as on Mighty Cord # A10-6034VP and Hopkins # 37175, and the square type as found on Jayco trailers, for which you'd use # 30104. The 4-pole connector on your truck carries only stop, turn and tail light signals. The trailer's...
view full answer... - Hopkins Wiring Harness # Recommendation for a 1994 Toyota Previa VanYes, you could plug the Adapter 4 Pole to 6 Pole and 4 Pole Trailer Wiring Adapter, part # 37175, into the 4-way of the Tow Ready Wiring Harness, part # 119178. As long as you do not need any of the other functions that the 6-way has you would not need to wire up those wires to the # 37175. The 6-way would essentially be a 4-way, except it would be through a 6-way connector, and you could wire up the rest of the wires later if you changed your mind. I attached a video of a # 119178 being...
view full answer... - Does Adapter 4 Pole to 6 Pole and 4 Pole Trailer Wiring Adapter # 37175 Use 10 Gauge WireThe Adapter 4 Pole to 6 Pole and 4 Pole Trailer Wiring Adapter # 37175 has 10 gauge wire for the blue wire, red wire, and black wire. The aux circuit you mentioned would be the black wire.
view full answer... - Recommended Adapter to Convert 4-Pole Connector to 6-Pole on 2009 Hyundai Santa FeTo convert the 4 pole plug # 118415 on your 2009 Hyundai Santa Fe to a 6 pole that will connect to your trailer, you can use the Hopkins Adapter # 37175 if your trailer uses a round connector, which can simply be plugged into your existing 4-pole connector. If your trailer has a 6-way square connector, you will instead need to use the Hopkins 6-Pole Square Kit # 37995. For this you will actually need to hardwire the harness into your vehicle's 4-pole wires. The kit comes with both connection...
view full answer... - 2013 F-150 XLT W/Towing Package What Do I Need To Pull Both A 4 And 6 Way TrailerYes, the Curt T-Connector Vehicle Wiring Harness for Factory Tow Package # C55664 will work depending on the way your 4-way plugs in. If you have the standard US car connector, then yes this will do the trick. If you don't have that car connector, I recommend the Universal Installation Kit for Trailer Brake Controller # ETBC6. This kit includes all parts necessary to install an electric trailer brake controller in your vehicle. Plus, A 6-Way connector. If you are not wanting to use...
view full answer... - Trailer Wiring Adapter Compatible With Hopkins Smart Hitch Backup Camera For 6-Pin Trailer ConnectorThe Hopkins Smart Hitch Backup Camera and Hitch Aligner System # HM50002 will only connect to a 7-Way like the Hopkins Endurance Multi-Tow 4-Way Flat to 7-Way RV Trailer Adapter # HM47180 that has a removable connector. The Adapter 4 Pole to 6 Pole and 4 Pole Trailer Wiring Adapter # 37175 does not have a removable connector and will not fit with the smart camera. You will be able to use the 7-Way Round to 6-Way Round Trailer Connector Adapter # 47549 to go from the 7-way to a 6-pin connection...
view full answer... - How to Install the Hopkins 4 Pole to 6 Pole and 4 Pole Wiring Adapter # 37175 on a 2002 Dodge RamSince 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...
view full answer... - Adapter for a 4-Flat on 2000 Ford Expedition and 6 Round on TrailerFrom your description, it sounds like you are looking for a way to use the factory 4 flat on your 2000 Ford Expedition with the 6 round on your trailer. If that is the case, what you would want to do is use the 4 Pole to 6 Pole Wiring Adapter # 37175. I have added a pair of links to videos reviews of this adapter for you to take a look at.
view full answer...
- Recommended Trailer Hitch To Tow 2 Horse Trailer with 2004 Dodge Ram TruckWith the trailer load you will be carrying, using the Curt Trailer Hitch Receiver, part # 13333, would put you near or slightly over the tongue weight capacity of the hitch, which is 600 lbs. If you were to use a weight distribution system when carrying your horse trailer you would be ok to use the Curt # 13333 Hitch. Tongue weight is calculated to be about 10 to 15 percent of the Gross Trailer Weight. I would recommend using the Curt Class V Trailer Hitch, part # C15409. This hitch will...
view full answer... - Wiring 2009 Land Rover LR2 for Electric Trailer BrakesTo actuate the electric brakes on the horse trailer, you will need to install a brake controller in your Land Rover. I would recommend a proportional controller, such as the Tekonsha Prodigy P2, part # 90885. The Prodigy is one of our best selling controllers, has been for years primarily because it works great and is very easy to use. You will also need the Brake Controller Installation Kit with 6-way connector, part # ETBC6, which includes the adapter you were mentioning. The installation...
view full answer... - How To Install 7-way Connector In 2008 Ram 1500 With Factory 4-way ConnectorIt sounds like your 2008 Ram 1500 has a factory 4-way connector instead of the factory 7-way connector. To add a 7-way connector you will need the # ETBC7 which will plug into your 4-way connector and you will just need to make a few more connections. The black wire will be extended to the battery of your truck with the included 40 amp circuit breaker, the white wire will get grounded to the frame, and the blue wire will get run to the factory blue brake output wire that Dodge ran. Since...
view full answer... - Recommended 4-Way Vehicle Side To 6-Way Round Trailer ConnectionThe adapter you need is the Hopkins Adapter 4 Pole to 6 Pole and 4 Pole Trailer Wiring Adapter # 37175. This will take your 4-way flat on your truck and allow you to convert to a 6-way round. This will give you wires for the remaining two functions to match your trailer. If you are just looking to match 4-way function, there is nothing more to do. If your trailer has brakes, you can use the brake controller wiring # 5506 along with a brake controller like # 90195 to give you a fully...
view full answer... - Wiring a Trailer with a 6-Pin Plug and Surge Brakes to a 2004 Dodge Ram with a 4-Way ConnecterTypically, a trailer with a 6-way plug has electric brakes, not surge. I would double check that you have surge brakes and that your plug is a 6-way. A 6-way plug is circular, has 5 pins on the outside and 1 pin in the middle. If you do have a 6-way with surge brakes, you will need the Adapter 4 Pole to 6 Pole, part # 37175. You will have 3 loose wires coming off of the adapter. You will ground the white, and then you will have to wire one of the two remaining wires into your reverse light....
view full answer... - Parts Needed to Wire Up 6-Way on 2001 Toyota TacomaNormally in a situation like this the best way to accomplish adding a 6-way round to a 2001 Toyota Tacoma is to first use a 4-way kit like part # C55379 to get the correct signals combined and then use an adapter like part # 37175 to convert it to a 6-way. Since you have a 6-way ready to wire up best option would be to use the # C55379 to get the circuits combined like you are needing and then cutting off the 4-way of the kit and wiring the circuits to the 6-way.
view full answer... - Difference Between Hopkins 4 Pole to 6 Way Trailer Connector Adapter 37175 and 47175There is no difference between the # 37175 and the 47175, it's the same exact part. Our part number for the Hopkins 4 pole to 6 way trailer connector adapter is # 37175, and Hopkins uses 47175 as the part number.
view full answer... - Can the Blue or Red Wire On the Adapter 4 Pole to 6 Pole Be Used For Reverse LightsIn regards to the Adapter 4 Pole to 6 Pole and 4 Pole Trailer Wiring Adapter part # 37175, the blue or red wire could be used for reverse lights. That said, you would just need to be sure you hook the reverse lights up on the trailer side connector to the adjacent pin. I have attached a photo that shows how the pins on a 6-pole should be wired but so long as the vehicle and trailer side both match the orientation does not matter.
view full answer...
- Converting 4-Pole Flat Connector on Honda Odyssey to 6-Way Square Connector on Pop-Up CamperThe adapter you were looking at, part # 30104 will work with Jayco campers only. An adapter like this would only provide directionals as well as brake and running lights for the camper. If you only need the lighting circuits functional on your trailer, you can simply remove the existing 6-way and install a 4-way trailer end, part # 18004. If your camper has electric brakes, and you want them to actuate, you will need to install a brake controller as well as an upgraded trailer connector...
view full answer... - 4-Way Flat Wiring Harness Fit for 2006 Chrysler PacificaTo add a trailer wiring harness to your 2006 Chrysler Pacifica, you will want to use a wiring harness with a converter. The converter works to change the separate taillight wiring on your Pacifica to combined wiring that is used on trailers. To be able to connect your Pacifica to your Jayco trailer that has a 4-Way flat connector, if your Pacifica did not come with a factory 7-Way connector, I recommend the # C55530. This is a custom fit wiring harness that will install behind the taillights...
view full answer... - Towing a Trailer with a 6-Pole Trailer Connector with a Vehicle That has a 4-Way ConnectorActually you need part # 37175. It plugs into your vehicle's existing 4-way and gives you a 6-way round. There are 3 extra wires; blue for trailer brakes, red for an auxiliary (usually 12 volt power), and a white for ground. The white wire needs to be grounded to the vehicle's frame from the connector to function. The other two can be capped off if you're not going to be use them. If you do need the other two wires the blue is run to the vehicle's cab and connected to the blue wire...
view full answer... - Location of Brake Controller Port for 1998 Ford Van ChassisThe procedure for installing a brake controller in your 1998 Ford van will depend on what (if any) trailer connector is on the vehicle. If the van has a factory installed 7-way or 4-way connector, there will be a port under the dash near the center console for installing a brake controller. You will need the brake controller wiring adapter, part # 3015-P. The adapter would wire color for color to the wiring adapter, and would then plug into the port under the dash. If the van has the...
view full answer...
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Info for this part was:
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Mike L
Expert Research:
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Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
John H
Expert Research:
Adam R
Expert Research:
Jeffrey L
Video Edited:
Zack K
Video by:
Kathleen M
Updated by:
Laura H
Updated by:
Wilson B
Updated by:
Alexander C
Installed by:
Cole B
Test Fit:
Randy B
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Ed
6/27/2020
Works well but bracket is rusting