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7-Way Molded Trailer Wire Connector, 4' Long

7-Way Molded Trailer Wire Connector, 4' Long

Item # H20043
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H20043 - 0 - 5 Feet Long Hopkins Trailer Connectors
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Lowest Prices for the best wiring from Hopkins. 7-Way Molded Trailer Wire Connector, 4' Long part number H20043 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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Hopkins Wiring - H20043

  • Trailer Connectors
  • Trailer End Connector
  • 7 Blade
  • Plug and Lead
  • 0 - 5 Feet Long
  • Hopkins


Trailer Connector RV Style 7-Way Blade with 4' lead

  • Pre-wired 7-Way Trailer Connector
  • Measures 4 feet long including connector
  • Wire gauges:
    • 14 Gauge - red, brown, green, and yellow
    • 12 Gauge - Blue
    • 10 Gauge - White and Black


Wiring Code
Molded Connector Function Usual Trailer Wire
White Wire Ground White Wire
Red Wire Left Turn and Brake Yellow Wire
Brown Wire Right Turn and Brake Green Wire
Green Wire Tail Lights Brown Wire
Blue Wire Brake Power Blue Wire
Black Wire 12 volt (hot lead) Black Wire
Yellow Wire Aux. -

Hopkins # 20044




20043 7-Way Molded Trailer Wire Connector, 4' Long




California residents: click here



Customer Reviews

7-Way Molded Trailer Wire Connector, 4' Long - H20043

Average Customer Rating:  4.8 out of 5 stars   (178 Customer Reviews)


- H20043
by:

Went from a 5 blade flat plug on boat trailer with tandem surge brakes to a solid 7 way molded connector. etrailer wiring diagrams were very helpful especially since boat trailer wiring did not match up to 7 way plug wiring. Double check with a tester to be sure your connecting correct wires.



- H20043
by:

My horse trailer OEM unit was brittle and stiff, after just a few years. This new wire harness from etrailer fixed the problem and was easy to install. It is even a little longer then the OEM, so there is more more room for turning sharp corners.


Comments
Still works great. Great connection with the tow vehicle, and still very pliable wires!
Dave J - 04/23/2021


- H20043
by:

Used this on my snowmobile trailer. The cable outer jacket is to rigid (Not flexible). Gets worse in colder temps. Don't recommend it for cold use. Picture is in garage at 53F. Cable is so stiff it won't fall on the floor.



- H20043
by:

I just wired it onto my trailer but it appears to be high quality. It is a little stiff as one person mentioned but it is fine for me.



- H20043
by:

Exactly what I need to replace my current trailer connector. The best part about this item is that the plug is molded on.



- H20043
by:

Bought a 20 year old horse trailer and needed to rewire it. The original pigtail had a 6 terminal plug, my new pick-up had a flat four and a 7 pin. When I bought it the guy gave me a 6 to 7 pin adapter but it didn't allow electric brakes. They are required in my state for a trailer over 1500 lbs. Think trailer with two horses. So I bought this pigtail. It is top quality and has large gauge wiring. I also needed break-away switch so I needed a battery. This pig-tail has #10 wires for both 30 amps (+12V) and Chassis ground. This really puts a charge in the trailer battery. (would do the same for an RV) Then #14 wire for the brake signal. This plugs right into the seven pin plug on my pickup with the tow package. Highly recommend.



- H20043
by:

this is a good product. By being covered from the plug out a distance it keeps you from pulling the wires out of the plug when you get the trailer in a bind while backing up.



- H20043
by:

Exactly what I was looking for, fast shipping, best price…etrailer has never failed me!



- H20043
by:

I experienced great service and quick response. Thanks


Comments
As expected
Breck - 07/25/2021


- H20043
by:

Purchased this to add electric brakes to my 16ft utility trailer. Very nice quality, and made a nice installation utilizing this connector with the polypropylene junction box.



- H20043
by:

Hi. I have not yet wired in this harness, however, I am rating E-Trailer. I’ve bought several products, not a lot, but several through E-Trailer. This is my “go-to” place for my crazy trailer life. Customer service has always been good, timing on receipt of product has been accurate, and products have been good. I will continue to support them and I thank them for their caring service.



- H20043
by:

Great product and prompt shipping, highly recommend!!!



- H20043
by:

Works like a connector should. Was happy that the color coding on the cable was the same as the camper



- H20043
by:

Outstanding value. Really well made quality product. Can't wait for the weather to clear and warm so I can install. Highly recommend!


Comments
Excellent! No problems. The quality still shines.
GENE - 05/23/2020


- H20043
by:

No directions with purchase



- H20043
by:

I recently purchased a 7-Way Molded Trailer Wire Connector, 4' Long Item # H20043 for my boat trailer. The connector is very well made and is very easy to install. The video describing the wiring is extremely helpful. I ordered it using standard UPS shipping and received it in 3 days. I have been purchasing items from etrailer for several years and I have been 100% satisfied with every purchase. Not a company out there that can beat their parts inventory, prices and support. Gregg



- H20043
by:

Well made. Works great and no issues. I did have to trim back some of the black sheathing when using this with the junction box so that I could make the wires fit the farthest post. Good product.



- H20043
by:

Worked ad expected



- H20043
by:

Solved my problem. I was switching out the my boat plug wiring. This product was perfect for my situation. Excellent quality. Very easy to rewire.



- H20043
by:

I recently purchased this connector for my trailer and received it on time with notification of shipment and tracking info. The connector looks as advertised, great experience with the website. Will be buying more products from this company.



- H20043
by:

Good quality as expected - great job etrailer! One item was delayed which slowed delivery of entire order, but etrailer provided excellent communication.



- H20043
by:

Its a harness, it works fine. It won't end world hunger, but if you wear these out as fast as my employees do, a couple spares laying around is a good thing.



- H20043
by:

Exactly what I needed, and very fast delivery. Thanks etrailer!


Comments
Very well. No issues with this products
Clark S - 02/18/2016



- H20043
by:

I purchased the 4' molded 7-way molded wire and plug, and the wiring junction box. I was very happy with all the products. My mistake was not crawling under my trailer and studying the frame layout proir to ordering. Once I was ready to rewire my trailer, I dicovered that my origional plan wouldn't work so the molded plug was too short. E-trailer was very prompt, and everything was exactly as dicribed.



- H20043
by:

While I have not hooked this up to my boat trailer yet, I can say the cord and plug are made of high grade rubber and should last a very long time. Looking forward to installing next weekend!


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Ask the Experts about this Hopkins Wiring

  • Recommended Durable 7-way Trailer Connector Pigtail
    Hopkins does a very good job of constructing their molded 7-way trailer connector pigtails for durability, I can highly recommend part # H20044, which is 6 feet long. The best way to connect this to existing wiring is to use a junction box like # 3375601101. A junction box allows you to tidy up the connections, protect them from the elements and provides an easy way to change out the pigtail in the future should it become damaged again. One of the best ways to preserve the long term...
    view full answer...
  • Troubleshooting Trailer Battery Backfeeding Into Truck Lights
    From what I can tell of your explanation, it sounds like the trailer battery is backfeeding into the truck, causing this issue. The only way I can think of that this would happen is that your 7-way like the 7-Way Molded Trailer Wire Connector # H20043 is not pinned correctly. I'm not sure which trailer connector you purchased from us so the best I can offer is for you to ensure the 7-way is wired correctly by function instead of by matching colors. I have added links to some help articles...
    view full answer...
  • Which Pin On 7-Way Connector Is The Ground
    The ground pin of a trailer side 7-way connector like the 7-Way Molded Trailer Wire Connector, 4' Long # H20043 you were looking at is the 5 o'clock position as shown in the included picture. For the vehicle side of the 7-way connector it would be the 7 o'clock position. I included pictures of both of the wiring positions for both sides of the 7-way connector and a video of the # H20043 for you to take a look at.
    view full answer...
    Image 1 for Image 2 for
  • Is the Yellow Wire For the Reverse Lights On the 7-Way Molded Trailer Wire Connector H20043
    In regards to the 7-Way Molded Trailer Wire Connector part # H20043, the yellow wire is for the reverse light circuit yes. This should then align with the pin responsible for the reverse light circuit on your vehicle. The terminology used for "AUX" is the same as the reverse light circuit. Please note, if you are rewiring a trailer I highly recommend you use a junction box, the Trailer Wiring Junction Box part # 3375601101 to keep everything organized. We also have the Trailer Wiring...
    view full answer...
  • How to Power Utility Light In Trailer That Has 4-Way Connector
    You are on the right track. You will need to convert the 4-way to a 7-way so that you can tap into the 12 volt accessory circuit of the connector to power the utility light. For a 7-way with a 4 foot long section of wire you would want the part # H20043. Currently your interior light is ran to the running lights circuit of the 4-way wiring. You would need to run the light to the black wire of the new 7-way as that is for the 12 volt circuit. I attached a chart that shows how the 7-way...
    view full answer...
    Image 1 for
  • Hooking Up New Hopkins 7-Way Connector Harness to Trailer Wiring
    The Hopkins trailer wiring harnesses like the model 20244 you have feature wire colors that differ a bit from standard setups so this is likely why the new plug isn't working when splicing the wires color to color. For your 20244 plug, which is similar to our Hopkins # H20043, the wire color functions are as follows: White - Ground Red - Left Turn and Brake Brown - Right Turn and Brake Green - Running Lights Blue - Brake Power Black - 12V Power Yellow - Aux In addition to...
    view full answer...
    Image 1 for
  • How To Charge A Trailer Battery With The Tow Vehicles 7 Way Connector
    Your 2006 GMC Sierra should have a 7 way trailer connector so you could tap into the 12v power wire and connect that to your trailer's battery. Keep in mind this will be like a low amperage battery tender to top off the battery, but it will not be a full-blown battery charger and it won't be able to charge it from completely dead. If your trailer has a 4 way flat connector then you will first need to cut off the 4 way connector and wire in the 7-Way Molded Trailer Wire Connector, 4'...
    view full answer...
    Image 1 for Image 2 for
  • Replacement for Damaged 7-Way Trailer Connector
    By damaged power cable, I assume you are referring to your trailer's 7-way being severed, and while there likely isn't going to be any electrical damage, you will need to replace the 7-way connector from the trailer. You didn't specify what was severed, but this is the most obvious culprit based on how they connect. For that you would be able to splice in a new connector, depending on the length you need: - 4 feet: 7-Way Molded Trailer Wire Connector # H20043 - 6 feet: Mighty Cord...
    view full answer...
  • How to Determine Functions of Wires on Trailer and Recommended Trailer Connector
    I can help you determine which wires go to which functions for your trailer, though there is no way to determine this by color; the reason for that is functions are not determined by the color of the wire and there isn't a universal standard for this. So in order to determine the functions for your trailer use a separate 12 volt battery and run a jumper wire in order to apply power to the circuit which will tell you the functions of each wire. In regards to a plug, I recommend a...
    view full answer...
  • Solution for Towing Trailer with 6-Way Square with Truck with 7-Way
    To make a 7-way to 6-way square adapter will require you to get the part # 37995 to use the 6-way end and then wire up a 7-way to it like part # H20043. This will give you the adapter you would need since there isn't one already pre-made. Or you just cut off the 6-way and wire the # H20043 to the wiring in place of it.
    view full answer...
  • How to Determine Functions of Trailer Wiring for 7-Way
    When installing a new 7-way trailer plug like the 7-Way Molded Trailer Wire Connector # H20043 the only way to determine the wiring connections is by testing the functions of your trailer wiring. To do that you will need a standard 12 volt battery and jumper wire with # 10-1-1. Simply touch one end of the jumper wire to the positive post of the battery and then touch the other end to different wires to see what circuits illuminate.
    view full answer...
  • Converting Trailer from 5-Way Connector to a 7-Way by Function
    I've linked a help article that will give you the common color coding but on your trailer I wouldn't go by it. Even if they are correct you just never know so I suggest testing it. To test it cut off the 5-way connector that's on there and connect each wire to a 12-volt power source and see what functions. Then use a 7-way connector like the Hopkins # H20043 and connect the function to the correct leads. Even the Hopkins does not use the traditional color coding. Instead it uses...
    view full answer...
    Image 1 for
  • Color Code Functions of Hopkins 7-Way Trailer Wiring Harness
    The Hopkins # H20043 uses the following wire coloring: White Wire - Ground Red Wire - Left Turn and Brake Brown Wire - Right Turn and Brake Green Wire - Tail Lights Blue Wire - Brake Power Black Wire - 12 volt (hot lead) Yellow Wire - Aux. I recommend wiring your trailer by function and not color. If there is a circuit you don't need for any reason it doesn't have to be connected.
    view full answer...
  • Replacement 7-Way Recommendation for 7-Way on Trailer With Chipped Pin
    The chip in the picture you sent in is why your right turn and brake circuit aren't functioning. It's time to replace the 7-way connector. We have the part # H20043 which is a 4 foot long section. Or we have the part # H20046 which is an 8 foot long section. Or the best solution would be to use the 7-way upgrade kit part # e99011 which comes with a 7-way, a junction box to make installing the 7-way easier and then also the needed connectors and conduit. It basically is one part number...
    view full answer...
    Image 1 for
  • Replacement Trailer 7-Way Recommendation for a 2002 Viking Legend Camper
    The trailer side 7-ways we offer like the part # H20043 all have blunt cut wires that you could splice into your trailer's wiring, but we do not have any 7-ways that have any connectors like what you described. You could still wire in the part # H20043 though. I attached a chart that details how this harness would typically get wired to a trailer. You can still send me a picture though and I will take a look at it.
    view full answer...
    Image 1 for
  • Availability of Wiring Adapter to Convert 12-Pin NATO Trailer Connector to 7-Way Blade Style
    We do not offer any adapters to convert a 12-pin military trailer connector to a 7-way RV-style plug like that on part # H20043 but we can help you gather the parts you'll need to wire in a new trailer plug to match that on your pickup. We can also offer you an easier alternative. To re-wire the trailer conector you'll need a wiring junction box # 38656, a trailer-side plug like the 4-foot # H20043 (or longer versions such as 6-foot # H20044 or 8-foot # H20046) and ring terminals like...
    view full answer...
    Image 1 for
  • Trailer 7-Way Connector and Wiring to Rewire a Trailer with Electric Brakes
    We have the Hopkins 7-Way Molded Trailer Wire Connector # H20043 which is 4 feet long. If it were me, I would use this with a junction box, like # 38656. For the wire you will want 10 gauge for the brakes, part # 10-1-1, and 12 gauge wire, part # 12-1-1, for lights. Both are sold by the foot. You will also need ring terminals # 44-5310A and butt connectors # DW05745-10. I've also attached a help article on trailer wiring that includes a wiring diagram you might find helpful.
    view full answer...
  • Would a Boat Trailer Have a 7-Way Harness with only 5 Wires Ran to it
    It is very possible that your trailer has a 7-way harness installed on it and not all of the circuits are completed. For a 7-way and lead that is 4 feet long you would want the part # H20043. Then for a new junction box we have the # 38656. I attached an install video for you to check out as well.
    view full answer...
  • Wiring In New Hopkins Molded Trailer Connector On Feather Light Trailer
    The Hopkins molded plugs like the 20244 (which has the same color functions as the newer Hopkins Molded 7-Way trailer connector part # H20043) features wiring colors that are different from standard trailer wiring setups. The Color functions are below: White - Ground Red - Left Turn and Brake Brown - Right Turn and Brake Green - Running Lights Blue - Brake Power Black - 12V Power Yellow - Aux Sometimes Hopkins can use different color functions on different parts of the Hopkins...
    view full answer...
  • Recommended Wiring To Rewire 16' Gooseneck Trailer
    I would be happy to help! Starting with the 7-way connector and junction box I recommend the # H20043 and # e99009. To rewire the lights on the trailer I recommend using the 35 Ft 4-Way Trailer Wiring Harness - Wishbone Style - 42" Ground # A35W42B and cutting off the 4 way connector so you can add each wire to the junction box. This will be the most cost effective way to get the wiring needed. Lastly I recommend the Hopkins Engager Push-To-Test Trailer Breakaway Kit with Built-In...
    view full answer...
  • Solution for Towing a Coleman Camper with a 6-Way Square Connector with a Tow Vehicle with 7-Way
    The connector you have on your trailer will need to be replaced as there isn't an adapter available for your setup. You will want to cut the 6-way round off of your trailer and replace it with a # H20043 by wiring it by function. You would want to apply 12 volts to each of the circuits on your trailer with a jumper wire and a car battery so that you can determine their function and then wire it to the # H20043 by function. I attached a chart that shows the colors of the wires and...
    view full answer...
    Image 1 for
  • Replacement 7-Way Trailer Connector with Short Wiring Harness for a 2017 Toyota Tundra
    For a replacement 7-Way trailer connector with short wiring harness attached for your 2017 Toyota Tundra you can use Curt harness # C55774. I have linked a video showing an example installation on a Jeep (which it also fits) for you.
    view full answer...
  • How Should Utility Lights be Wired on a Trailer
    When you go to wire up the utility lights on your trailer the best way is to run the power wire to each light and then run the ground to either. Running them in series wouldn't be the best way since if one light goes out both go out like Christmas lights.
    view full answer...
  • Replacing a 6-Way Trailer Connector that Only Uses 4 Functions with a 7-Way
    To connect a 7-way trailer connector like # H20043 to your trailer you'll need to cut off the existing 6-way and then find out the function of each of the wire. They should be ground, running lights, left turn signal and brake, and right turn signal and brake. You'll need to trace each wire back to where it terminates or connect each wire to 12 volt power to find each function. Then connect the 7-way by function, I've attached a help article that gives the details on a 7-way connector....
    view full answer...
  • Replacement 7-Way Recommendation for Trailer with 2 Round 4-Ways
    It's highly unusual for a trailer like yours to have two round 4-ways like what is in the picture you sent in. It's possible they would match the # PK11410 which is a female 4-way socket but I'd have no way of knowing how yours are wired since they are not standard. Best option I would have would be for you to cut off the 4-ways and wire them to a 7-way plug like part # H20043. To identify the wires of the connector you'd need to use a 12 volt jumper wire from a vehicle battery's positive...
    view full answer...
    Image 1 for Image 2 for
  • 7-Way Recommendation to Replace 4-Way on 5 by 8 Trailer
    You could easily replace the worn out 4-way on your trailer with a new 7-way. For that you would want the part # H20043. The white wire of this connector is for the ground circuit, the red wire would be for left turn/stop, the brown wire for right turn/stop, and the green wire is for the tail lights. The rest of the wires wouldn't be used. You will want to solder these connections or use butt connectors like part # DW05744-10.
    view full answer...
  • 7-Way to 7-Way Extension for a 2011 Toyota 4Runner
    We do have some 7-Way to 7-Way extensions such as # 20027 which is 7 feet long. Or you could use # H20043 and attach the wires to the back of a vehicle side 7-Way, # PK12-707E, if you want one that is right at 4 feet long.
    view full answer...

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Info for this part was:

Employee Joe V
Installed by:
Joe V
Employee Jeff D
Installed by:
Jeff D
Employee Mike L
Expert Research:
Mike L
Employee Michael H
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Michael H
Employee Jameson C
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Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Jeffrey L
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Jeffrey L
Employee Jacob T
Video Edited:
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Employee Wilson B
Updated by:
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