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Hopkins Endurance 5-Way Flat Trailer Connector - Vehicle End - Ergonomic Design

Hopkins Endurance 5-Way Flat Trailer Connector - Vehicle End - Ergonomic Design

Item # HM47900
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Five-wire design is perfect for newer boat trailers that have hydraulic brakes. Easy-pull connector housing makes disconnecting a snap and includes built-in mounting holes and a protective dust cover. Lowest Prices for the best trailer wiring from Hopkins. Hopkins Endurance 5-Way Flat Trailer Connector - Vehicle End - Ergonomic Design part number HM47900 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (43)
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Hopkins Trailer Wiring - HM47900

  • Trailer Connectors
  • Vehicle End Connector
  • 5 Flat
  • Plug and Lead
  • 0 - 5 Feet Long
  • Hopkins

Five-wire design is perfect for newer boat trailers that have hydraulic brakes. Easy-pull connector housing makes disconnecting a snap and includes built-in mounting holes and a protective dust cover.


  • 5-Wire design common on boat trailers with hydraulic brakes
    • Provides backup function to release surge brakes
    • Fits most 4-way connectors
  • Easy-pull, ergonomic grip on connector makes disconnecting a snap
  • Heavy-duty connector housing has built-in mounting holes
  • Durable, molded dust cover provides superior protection for terminals
    • Tin-plated terminals resist corrosion
  • Nylon sleeve and heat-shrink tubing protect wires
  • Terminal grease packet included


  • Connector: 5-way flat
  • Wire length: 48"
  • Wire gauge: 16
  • 3-Year warranty

The 5-way flat connector is found on most newer boat trailers that have hydraulic brakes. The fifth wire in this model ties into the reverse lights on your vehicle so that a signal can be sent to your hydraulic brake actuator to disengage whenever the tow vehicle is put into reverse. To use this function, your actuator must have an electric reverse lockout with solenoid.

The 5-way design will also work with small utility trailers that have electric brakes. For this type of application, the fifth wire will need to be wired to correspond with your in-cab, electric brake controller.

47900 Hopkins Endurance 5-Wire Flat Vehicle End Connector

California residents: click here

Customer Reviews

Hopkins Endurance 5-Way Flat Trailer Connector - Vehicle End - Ergonomic Design - HM47900

Average Customer Rating:  4.9 out of 5 stars   (43 Customer Reviews)

Five-wire design is perfect for newer boat trailers that have hydraulic brakes. Easy-pull connector housing makes disconnecting a snap and includes built-in mounting holes and a protective dust cover.


Connector and wire harness well made - connector designed such that it can be mounted and harness has added protection for wires.

Would like to have marine grade wire since I do mostly saltwater fishing. I mounted the connector on a piece of 1.5" square galvanized tubing painted black.


Used this on my 2018 Equinox for my flat tow tail lights.


I'm one of those people who do a lot of research before making a purchase. I am very happy with the quality of the Hopkins trailer connector and would highly recommend it.. Good quality products and excellent service from

Still 5 Stars! E-trailer always has what I need!
Chris - 02/21/2019




Delivery was faster than I expected. I bought a converter with the appropriate adapters to go from a 4 wire vehicle to a trailer with turn signals separate from the brakes. I haven't done my final assembly yet, but I did take a few minutes to twist the wires together to make sure everything was going to work like it was supposed to. Instructions were clear, wires & converter were clearly labeled & preliminary hook up took less than 10 minutes.


etrailer is a great place. They have both quality equipment and parts, as well as excellent prices. If you need some advice, they can supply that as well. It is rare in the days of internet buying that you can find all three qualities from one store.


Not installed yet due to weather & travel. Prefer to 5 pin adapter kit. Like extra cable / wire length to connect to Jeep wire harness so all connections are in a protected space. Heavy duty and like dust cap.


This connector is built to last. A big step up from most flat 4 or 5 wire in quality.
With it's secure fitting dust/dirt cover I have no worries that the terminals
will stay clean and always make a good connection . The 3 year warranty is a
plus also.


Great quality, good materials, good wire gauge, covers built in. Just all around nice.


A quality built wiring harness. Heavy duty and well constructed.


Product exactly as described. delivered to my door within 3 days! As always excellent communication and transaction.
Will continue to use them for all my trailering needs.


See review for the other side of the harness. Both sides are well identified.


Great Product. Each terminal is identified in the plastic plug end - making wiring and troubleshooting easier.

Comes with a decorative and protective loom and covering end cap.


I needed to change from a 4 prong trailer connection to a 5 prong. The product was easy to wire and works great. A good product and I would recommend it to anyone.


Great quality piece. Will made wiring my Jeep to my trailer so much easier.


Attached easily. Nice that NO extra bracket is needed to attach to the bumper.


Installed product without a hitch, been working as expected.


We are a hitch install shop that specializes in all things towing and this wiring was installed multiple times over the last year, this is the best wiring to upgrade to the 5 flat that will last long because the wires and 5 flat head is more durable than some alternative options.
Bauers C - 04/02/2022


Very high quality product. It's a simple little thing, but it should still be well made, and this one is.


Good Equipment, works like it should


Products are exactly as stated.


Great quality product and amazing fast shipping!!


Plug and Play


Good quality. The cap fits nice and sn ug.


Great product, good prices very good customer service would highly recommend.

Show More Reviews

Ask the Experts about this Hopkins Trailer Wiring

  • Can Blue Wire of Hopkins Endurance 5-Way Flat Trailer Connector HM47900 be Used for Reverse Circuit
    The blue wire of the # HM47900 can be used for basically any circuit. Typically for 5-ways like this the reverse light circuit is the most common circuit ran to the 5th wire. So this would work well for your application.
    view full answer...
  • How to Make 5-Way Flat to 5-Way Flat Adapter
    You'd have to take two 5-way males like the Hopkins part # HM47900 and wire them together to have a 5-way flat to 5-way flat adapter.
    view full answer...
  • What is the Wire Gauge Size for the Hopkins Endurance 5-Way Connector # HM47910
    I called Hopkins to double check the wire gauge on the Hopkins Endurance 5-Way flat trailer connector, # HM47910, and # HM47900. I also pulled the wiring harnesses to see for myself which wire size the harness is constructed with. Our technical representative at Hopkins checked their build data and said the wires for both harnesses are 16 gauge wires. So with all of the discrepancies, I decided to pull some wire and produce a short video detailing the size of the wire for you, see link....
    view full answer...
  • How to Make 5-Way Extension Harness
    If you wanted to make a 5-way extension you would want to use the part # HM47900 and then the # HM47910 as well. You would need to connect the wires of each connector together matching them by color and you'd have a 36 inch long 5-way extension.
    view full answer...
  • Replacement for 5-Way Trailer Connector with 9 Wires
    For a replacement 5-way trailer connector, I recommend the Hopkins Wiring Harness with 5-Pole Flat Trailer Connector part # HM37918. In regards to installation, you really need to test the wires for function to determine their purpose but if I had to guess I would say the red is for the reverse lockout or running lights, green for right stop/turn, yellow for left stop/turn, and white for ground. The extra wires will just be combined into once but you should verify each of the functions prior.
    view full answer...
    Image 1 for
  • On a Trailer Towed by 2008 Honda Ridgeline Trailer has Running Lights but No Turn or Brake Lights
    If your 2008 Honda Ridgeline has a factory trailer wiring harness, check the owners manual for any fuses and relays related to the tow package wiring that may need to be replaced. If everything checks out or if you have an aftermarket wiring harness like # 118400 then use a circuit tester like # 40376 if needed to test the pins on the connector. If the pins on the connector do not show the proper signals then you know there is a wiring issue with the Ridgeline wiring that needs to be...
    view full answer...
  • Troubleshooting Trailer Running Lights Not Working, Turn Signals and Brake Lights Do Work
    The white wire is probably the ground wire and it needs to be connected to a clean, corrosion free bare metal surface on the trailer frame. Without a good ground, some or all of the trailer lights will not work or work properly. You can also check the grounds for each tail light. Trailer tail lights usually ground through the mounting studs and they, too, will need to be attached to a clean corrosion free bare metal surface. There is not always a universal wiring color code that everyone...
    view full answer...
  • Availability of Plug-and-Play Wiring Harness for 2008 Kawasaki Vulcan Nomad
    We do offer any plug-and-play trailer wiring harness for the Kawasaki Vulcan Nomad. The parts you will need will depend on the type of connector and wiring scheme on the trailer you intend to pull. Your Vulcan uses separate wiring for its stop and turn signals. If your trailer is wired in the same way you could simply wire in on the bike an appropriate 5-pole vehicle side connector, such as Hopkins # HM47900. If you'd like to tell me about the trailer's wiring system and its connector...
    view full answer...
  • Recommended 5-Way Vehicle Side Connection for Boat Trailer
    For a nice clean connection, you can use the Hopkins Endurance 5-Way Flat Trailer Connector - Vehicle End - Ergonomic Design # HM47900 to connect to your 4-way wiring and then add the reverse power lead from behind your tail light. Another option is to use the Tow Ready 4 Pole to 5 Pole Trailer Wiring Adapter # 20036 which has just the 5th function wire to connect to your reverse signal. This adapter simply requires less splicing. I've attached a video of this install to assist. I've...
    view full answer...
    Image 1 for
  • How to Convert 4-Way of Motorcycle to 5-Way For Towing Trailer with Separate Tailligths
    In order to be able to use the 4-way on your motorcycle you will need a converter like the Tow-Ready Vehicle to Vehicle Taillight Converter, part # 118158. You will need to cut off your motorycle's 4-way and then wire this in place of it and then from there run it to a 5-way like the part # HM47900. The running light circuit of the original wiring will bypass the converter box.
    view full answer...
  • Where Does Fifth Pin of Trailer 5-Way Run to Activate Reverse Lock Out Solenoid
    Sounds like you are trying to activate a reverse lock out solenoid on a surge brake trailer so that it can back up freely. The fifth pin that is the furthest from the jacketed ground pin is the fifth circuit to use. This circuit would need to tap into the reverse light circuit of your tow vehicle. I attached an install video for the 5-way adapter part # 47515 that shows this process on a 2014 GMC Acadia.
    view full answer...
  • Can Truck with 5-Way Connector Connect to Trailer with 4-Way
    You should be able to just plug the to connectors in and have the 5th circuit just not be used. Or you can cut off the 4-way and install a 5-way with part # HM47900.
    view full answer...
  • What Gauge Wire does the Hopkins Endurance 5-Way Flat Trailer Connector # HM47910 Use
    I went out into our warehouse and pulled a Hopkins Endurance 5-Way Flat Trailer Connector - Trailer End, part # HM47910, and it has 16 gauge wires. You may also be interested in a Hopkins Endurance 5-Way Flat Trailer Connector - Vehicle End - Ergonomic Design, part # HM47900, that has 16 gauge wires also.
    view full answer...
  • Does 4-Way Trailer Wiring Harness Have Reverse Light Feature
    I can certainly help you with that. Since the Curt T-Connector Vehicle Wiring Harness, part # C55384 is a 4-way connector the four functions will be Yellow for the left turn and brake, Green is for right turn and brake, Brown is for running lights, and the White is the ground wire that gets attached to a clean metal surface. For the reverse light function you will need a 5-way trailer connector and you can use the fifth wire to attach to the reverse light circuit on your vehicle. You...
    view full answer...
  • 4-Way Recommendation for 2014 Chevy Silverado for Wiring Up Strip Light
    For a 4-way harness that will plug inline with the 7-way you have at the rear of your 2014 Chevy Silverado 2500HD you would want the Tekonsha part # 118384 which will do just that.
    view full answer...
  • Creating a 6-Way Round to 5-Way Flat Trailer Wiring Adapter
    We do not carry a 6-way to 5-way adapter, so I recommend making one using the Hopkins Trailer Connector Adapter - 6-Pole Round to 6-Pole Square # HM47415 and removing the 6-pole square to replace with the Hopkins Endurance 5-Way Flat Trailer Connector - Vehicle End - Ergonomic Design # HM47900. You won't use the 12V feature so I recommend removing that wire from the 6-way so it doesn't draw any power. I've attached a wiring article to help with the connections.
    view full answer...
  • How to Create an Adapter for a Vehicle's 6-Way Round to a Trailer's 5-Way Flat
    We do have a way for you to connect your 6-way round and 5-way flat. We don't have a direct adapter, but a combination of two with a bit of splicing will do the trick. First, use part # HM47415 to convert your 6-way round into a 6-way square. Then, remove the 6-square from that and attach part # HM47900 to give you the 5-way flat connection point. I've linked to a help article of wiring to help you with this along with video reviews of both of the adapters. You won't be using the 12V...
    view full answer...
  • How to Make 36 inch 5-Way Trailer Wiring Extension
    If you wanted to make a 5-way extension you would want to use the part # HM47900 and then the # HM47910 as well. You would need to connect the wires of each connector together matching them by color and you'd have a 36 inch long 5-way extension.
    view full answer...
  • Replacing 7-Way Trailer Connector with Smaller Connector to Tow a Trailer with Brakes
    A 6-way round trailer connector, like # HM48420, once it's mounted isn't going to be much smaller than a 7-way. If you don't need any functions other than running, brake, and turn lights along with the brake circuit I suggest going with a 5-way flat connector like # HM47900. To put a 5-way on both your tow vehicle and trailer you can use the kit # HM47890 that includes both connectors.
    view full answer...
  • 5-Way Flat Trailer Connector Mounting Bracket for a Hopkins Vehicle Side 4-Way Flat
    For a 5-Way flat Hopkins vehicle side trailer connector you will want to use the Mounting Box, # RP74641. I have included a link to a video review for you.
    view full answer...
  • Locating Reverse Light Circuit on 2001 Dodge Ram 1500
    I do not have any information that is specific to your 2001 Ram, but I can certainly help you through the process. The easiest way to do this is to access the rear of one of your tail light assemblies, as if you were replacing a burned out bulb. Once you look at the rear of the assembly, it should be immediately evident which wire feeds the reverse light (clear bulb). You would tap the wire with the blue stripe into that circuit, using a butt connector like part # DW05714. Be sure to wrap...
    view full answer...
  • Adding Trailer Wiring to a Motorcycle to Tow a Trailer
    Motorcycles have separate brake lights and turn signals. Most trailers, unless designed for use with a motorcycle, have combined turn signals and brake lights. You will need to convert the separate signals on the bike to match what the trailer requires. To do this you will need a converter like # 119178. On this harness you will connect the white to ground, green to the left turn signal, yellow to the right turn signal, and red to the brake lights. Brown is the running lights. If it is...
    view full answer...
  • How to Install Trailer Wiring on a 2004 Mitsubishi Endeavor Pulling a Boat Trailer with a 5-Way
    Yes, the fifth wire on your boat trailer is most likely a reverse lock-out solenoid for the surge brakes so that you can reverse your trailer without the brakes activating. I would recommend you install this T-One Connector Assembly # 118516 on your 2004 Mitsubishi Endeavor (instructions attached) and then cut the 4-way off of the harness and then wire up a Hopkins Endurance 5-Way Flat Trailer Connector # HM47900 by function to the wires that are now exposed from the # 118516 to the #...
    view full answer...
  • Recommended 5-Way Harness For 2002 Chevrolet Silverado With No 7-Way Connector
    Per our fit guide and information, the 2002 Silverado came with a factory 7-way connector at the rear of the vehicle. Since you said you do not have the 7-way, the 5-way connector will need to be hardwired. You will need a circuit tester like part # 3808 to test the wires by function. You can enlist the help of someone to sit in the cab and run through the different functions while you find the correct wires. I recommend the Hopkins Endurance 5-Way Flat Trailer Connector, part # HM47900....
    view full answer...

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