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7-Way Connector - Trailer End

7-Way Connector - Trailer End

Item # 54-77-003
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Lowest Prices for the best wiring from Bargman. 7-Way Connector - Trailer End part number 54-77-003 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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Bargman Wiring - 54-77-003

  • Trailer Connectors
  • Trailer End Connector
  • 7 Blade
  • Plug Only
  • Bargman


Features:

  • 7-Way trailer connector
  • Quantity: 1 connector



5477003 Bargman 7 Way Connector Trailer End





Video of 7-Way Connector - Trailer End

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Bargman Wiring - Trailer Connectors - 54-77-003 Review

Today we're going to be reviewing part number 54-77-003. This is the Trailer End 7-Way Connector from Bargman. You can see here that it's made from a durable ABS plastic construction. One of the great features about this particular connector, is it has the finger tabs right here. That's going to make disconnecting very simple and easy. This white piece here is a plastic insert that's designed to tighten up over the wires, which is going to secure the wires, but it's also going to help keep out any dirt or grime from entering the socket. The way that you would connect your wires, is you'll need to undo the set screw here.

That's going to allow the face to pop out of the socket and you'll need to loosen up the two screws back here to fit all the wires through. Feed those through, you're going to connect it to the back of the socket. Once you have this removed by undoing that set screws, it's going to expose some connection points here on the back of the face. Make your connections and then secure it back in place, tighten down the set screw, tighten up these two screws to close that plastic insert to keep anything out of the socket and the connection points. The overall length measuring from end to end, that's going to give us a measurement of about 3-/12 inches. Measuring to this point here, if I do measure to that center connector there, it's about 3-3/4 of an inch.

It's got the nice little tab up here so it's going to allow you to know how to enter this into your 7-way socket and then it's going to snap into place for a nice tight, secure connection. That's going to do it for today's review of part number 54-77-003. This is the Trailer End 7-Way Connector from Bargman. .


Customer Reviews

7-Way Connector - Trailer End - 54-77-003

Average Customer Rating:  4.7 out of 5 stars   (73 Customer Reviews)


- 54-77-003
by:

We purchased these connectors as replacement stock for our numerous trailers as the connectors are always being damaged in the field. etrailer always has a large selection of new/replacement parts available with a very competitive pricing, good quality and quick turn-around and delivery. We have purchased from etrailer in the past and will continue to to buy from them in the future. etrailer Customer Service is always very helpful and always follows up to confirm delivery. 240307


Comments
No problems! We always keep eTrailer parts in stock.
Jim H - 03/09/2017

22661

- 54-77-003
by:

This connector is of hard plastic rather than the softer rubber. I think it will slide in and out smoother than the other ones. That means the set screw probably will not strip out as quick. 96064


Comments
Connector still working great with absolutely no problems great product
Mike - 08/20/2014

6375

- 54-77-003
by:

Junk! Super cheap soft plastic. The set screw went right threw the plastic. The screws on the clamp did the same. Don’t waste your money. 520105


Comments
If you are looking for a trailer connector plug that is not plastic I recommend pollak metal 7 way trailer plug part PK12702. It features a heavily plated metal construction for endurance.
-- Heather A - 06/12/2018

39661

- 54-77-003
by:

great product and fast delivery. Although reasonably priced this wasn't the cheapest 7 pin trailer connector, but it has all brass electrical connections and has a screw cinch to keep the wires tightly in place and was definitely the best buy. The on online description (one of the best I have seen) was very clear and helped to select this over others. It shipped quick and got delivered sooner than I expected. Would highly recommend this product and this company. 210535


Comments
connector is still working great. Thanks for asking
seven c - 07/29/2016

19790

- 54-77-003
by:

great product 769718



- 54-77-003
by:

Easy to hook up and works great. 722320



- 54-77-003
by:

One year later and the connector works perfectly. It was a quality component. 719945



- 54-77-003
by:

Works as expected. The quality is better than most off brands. 719273



- 54-77-003
by:

Still working perfectly, with zero issues to date. 670999



- 54-77-003
by:

I'm very pleased with the replacement parts I ordered and received them in a timely manner I have already recommended this site too a couple of my friends. 651359



- 54-77-003
by:

installation directions very poor after installing plug directional signals opposite so when making right hand turn blinker blinked on left hand side, Had to take apart again and redo as picture of installation procedures very poor and easy to confuse these directions should be clearer 649542



- 54-77-003
by:

Works great and easy to install 633676



- 54-77-003
by:

Well manufactured. Retainer method for seven blade insert leaves a lot to be desired, especially with wires so heavily insulated. In my opinion there should be three equally spaced retainer screws holding in place. We'll see what repeated pulling out the plug will produce over time...I have reservations. 623130



- 54-77-003
by:

Great quality and timely shipping! Thank you! 613616



- 54-77-003
by:

Perfect product. 598706



- 54-77-003
by:

This is a quality part and makes a solid connection. I used it to make a longer harness when I added drop hitch. 594101



- 54-77-003
by:

The folks at E-trailer are awesome. The part was exactly as described. There video made installation a snap, it took less then 10 minutes to remove the old part and install the new 7 pin plug end . Works like a charms . I will continue to buy all my trailer needs form E-trailer Because they always make it so simple! 561368



- 54-77-003
by:

Excellecnt product makes change outs ea sy! 554855



- 54-77-003
by:

The 7-way Connector is very good. I am currently using it to extend the building alarm to include a trailer. 540485



- 54-77-003
by:

perfect fit and works 513539



- 54-77-003
by:

Got the plug on time. Had some wiring schematics in package. Easy to install. Just watch if the schematics shows inside or outside of plug. If wrong , mirror it. 511233


Comments
I am happy working harness. Product worked as described.
Jacqueline - 05/22/2019

55649

- 54-77-003
by:

Part is exactly what I needed. Easy ins tall. 502667



- 54-77-003
by:

I plan on using the 7-way connector to supply power from my truck to a power winch on my boat trailer. won't know for a couple of weeks when I get the boat from storage but it looks like a simple way for a clean connection. 499783



- 54-77-003
by:

Items works as expected 489343



- 54-77-003
by:

I ordered these for my husband because he went to a local auto part store and they were prohibitively expensive. After a google search and finding these he is ecstatic because not only was the price far less, more importantly the quality is superior. 486141


Comments
My husband said they’re holding up well and he is still happy with them
Phyllis - 03/19/2019

50738
25
73
Show More Reviews

Ask the Experts about this Bargman Wiring

  • Replacement Bargman 7-Way Plug part # 54-77-003
    Sounds like you are looking for the # 54-77-003 which matches the part number and description you mentioned. This is a replacement trailer side 7-way plug.
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  • How to Confirm Trailer Wiring Configuration to Match 2007 Jeep Grand Cherokee
    Trailer wiring often uses a particular wire color for a particular function, such as a white wire for ground, but there is no absolute rule that this will be the case. For this reason testing with a circuit tester like # 40376 is recommended. In the case of a trailer you can use a spare battery (or your Grand Cherokee battery) to test each trailer circuit to see what light activates with the 12V input power applied. The linked trailer wiring article illustrates the various connector...
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  • Can 10 Gauge Wire Fit The Bargman 7-Way Trailer End Connector
    I pulled one of the Bargman 7-Way Connector, part # 54-77-003 and a piece of 10 gauge wire to see if it would work. Although the 10 gauge wire is tight when inserted next to the post on the back of the connector, I was able to get it to fit and tighten, so it will work just fine for you. I have included a short video that shows the 10 gauge wire being installed on one of the posts at the back of the connector.
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  • Compatibility of Bargman # 54-77-003 7-Way Connector With # 50-87-004 Vehicle End Socket
    You can indeed install the Bargman 7-way connector # 54-77-003 onto the # 50-87-004 Sealed connector. However, there is a connector loop like this that's already constructed, part # 20027. If you're wanting to use this item to install a 7-way connector in your truck bed for a fifth wheel, we offer T-Connectors like # 41157 that would plug inline with the truck wiring harness that feeds the 7-way connector on the bumper. Some of these are vehicle specific, so if you'd be interested in...
    view full answer...
  • Does Each Circuit of 54-77-003 Use a Single Pin to Contact Vehicle 7-Way
    Each of the circuits that the 7-Way Connector # 54-77-003 has makes contact with the vehicle 7-way pins with a single pin. In case you were asking about how the wires connect to the connector check out the attached picture.
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  • Replacement 7 Way Connector for Use with 10 Gauge Wiring
    The Bargman 7-Way Connector, # 54-77-003, can be used to replace your current connector which has 2-10 gauge wires. When connecting the 10 gauge wires, as well as the other wires, you can use a ring terminal like part # DW05705-1 if you prefer.
    view full answer...
  • Can 6-Way on Towed Vehicle be Hardwired to 7-Way Connector on RV
    The easiest way to connect your towed vehicle to the 7-Way on your RV will be to use a cord like the Blue Ox 7-Wire to 6-Wire Coiled Electrical Cord # BX88206. This will allow you to quickly connect your tow vehicle to your RV by using the included coiled cable that features a 6-Way on one end and a 7-Way on the other. If you would rather hardwire the 6-way wires from the towed vehicle cord to the 7-Way, you can certainly do this. You will just need to make sure that you make the proper...
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  • Wiring Lance Slide In Camper to Work with In-Bed Trailer Connector on 2019 ford F250
    Since the 7-way round pin plug is obsolete, your best bet would be to replace the connector on your camper with the common 7-way blade style connector. You'd remove the existing plug on your slide in camper, and replace it with # 54-77-003. You could then use an extension like # C56080 to reach the connector rearward of the wheel well.
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  • Diagram of Functions on 7-Way Plug
    I made a diagram for you which shows the function a 7-way plug for both a vehicle-side plug like what you get with the Hopkins Endurance Quick-Install 7-Way Trailer Connector with Universal Pigtail Harness # HM47210 or Adapter 4 Pole to 7 Pole Vehicle End Trailer Connector # 30717, as well as a trailer-side plug like the 7-Way Molded Connector w/ 15' Cable - Trailer End # 50-67-103 or 7-Way Connector - Trailer End # 54-77-003. I have also added a link to a help article on trailer wiring...
    view full answer...
  • Parts to Make 7-Way Male to Male Cable
    You can use Bargman 7-way plug # 54-77-003 along with 7-way cable # 54006-059 to give you a male-to-male 7-way with matching plugs. We do offer a pre-made 7-way # 50-67-210 but it is 8-feet long, not 9-feet.
    view full answer...
  • 7-Way Trailer Plug Adapter or Compatibility with Lance Slide-In Truck Bed Camper
    Lance does have a proprietary plug, but many customers see a standard 6-way or 7-way round and notice it doesn't fit their factory 7-way as well. I've attached an article to help if you have one of the 7-way or 6-way round connectors which we do have adapters for. If you have a 7-way round, then you will use adapter # 47595. If you have a 6-way plug then you will use adapter # A10-7276VP or # PK12728. If you have the special Lance plug, I recommend replacing it with # 54-77-003 which...
    view full answer...
  • 7-Way Trailer Connector to 7-Way Trailer Connector Coiled Adapter
    No, the 7-Way wire does not go from the 7-Way to the 6-Way on the Hopkins Heavy-Duty, Coiled Trailer Connector Adapter # HM47085. What I recommend is using # WG54006-043 which is a bit longer at 6 feet but it does have all 7-Way wires running all the way through and it is ready for a 7-Way connector. For a trailer side 7-Way use # 54-77-003. For a vehicle side 7-Way use # A10-7082VP.
    view full answer...
  • Changing Trailer 4-Way Wiring to 7-Way Wiring for Extra Function and Compatible Connector to Truck
    To switch your boat trailer from a 4-way to a 7-way connector, I recommend using the 7-Way Molded Trailer Wire Connector, 6' Long # H20044 along with heat shrink butt connectors # DW05744-5. You will ground the white wire to your trailer frame using # 44-5310A and then connect the running lights, right turn/stop, left turn/stop, and reverse light. To the reverse light (yellow wire on # H20044) you will connect # 16-1-1 wire sold by the foot to lead to your trailer reverse lights that...
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  • Re-Wiring 7-Way RV Style Trailer Side Wiring Connector
    I can certainly help you re-wire your trailer-side 7-Way connector. Thanks for the photo of your connector, it helped verify the style connector and which wires you have! The attached wiring diagram will help you in attaching the wires back to your connector. Based on your photo, the only wire you don't have is the Blue wire that would be for the Brake Controller Output/trailer brakes signal. The Green wire should carry the Tail and Running light circuit, Black is 12V power, Yellow is...
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  • Plug-And-Play Trailer Connector for 2005 Chevy Silverado
    A 5 pole round connector is really rare, with the 7-way, 6-way and 4-pole flat being the most common. Most trucks that come with an OEM trailer connector will come with a 7-way. A 6-way is sometimes found on horse trailers, and a 4-pole is the basic connector used for smaller trailers that supplies lighting circuits only. I've edited a photo for you showing an example of the plug and socket (or trailer and vehicle ends) of each of these connectors. I'd recommend fitting your truck out...
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  • Female 7-Way Trailer Connector Recommendation for Chevy Silverado
    The part # 54-77-003 is a male side 7-way connector. If you need the female side connector as well you would want the # HM40975 if your vehicle has the round 7-way socket already present. If you need to hardwire the 7-way you'd need the part # HM40975-11998 instead.
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  • Compatibility of a Pollak Heavy-Duty 7 Pole Round Pin Trailer Wiring Connector with Blade Connector
    The Pollak 7-pole round pin part # PK11700 is not compatible with Pollak 7 and 4-pole connector # HM40975 because it has blade style pins. What I recommend is you change your trailer connector to a 7-Way blade connector part # 54-77-003. You will also need a wiring harness like # PK11998 to install the 7/4-Way connector. It plugs into the back of the 4/7-Way. The connector mates with RV-style socket to form a weather tight seal. -Red - Left Turn and Stop - 14 gauge -White - Ground...
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  • 7 Way Connection with Junction Box With Traditional Wiring Scheme vs RV Wiring Scheme
    I have a solution for you, but we aren't going to have any 7 way connections and junction boxes that are wired with the same color wires/pin locations as the traditional wiring setups you're looking for. I recommend using the 7 way connector # 54-77-003 and hard wiring your plug the way you want it setup. You can get wire by the foot (12 gauge) # 12-1-1 or (10 gauge) # 10-1-1 and a Trailer Wiring Junction Box # 3375601100 to finish off this project. This will allow you to use the proper...
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  • Troubleshooting Electric Jack Whose Light Works But Motor Does Not
    Thank you for detailing the issue and the testing you've done for the electric jack. My suspicion is that the jack's plug has a weak ground connection. A weak ground will pass enough power for the jack's light to function but may not pass enough current for the jack motor to operate. This is not uncommon on trailers that are a few years old and which may have developed some corrosion on the plug contacts. Check the ground and +12V contacts on the jack's male 7-way plug. Please refer...
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  • How to Order 38 foot Long 7-Way to 7-Way Adapter
    We have the Deka Wire - Jacketed 7-Wire # DW04914-1 which is jacketed 7-way wiring we sell by the foot. You could order it in a quantity of 38 feet and you'd get a 38 foot long section of 7-way wiring you could then wire to the 7-way connectors you need like the # 54-77-003 for the plug end or the part # HM48480 for the female side.
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  • Troubleshooting Voyager Brake Controller Install on 2009 Dodge Ram 2500
    Since you mentioned plugging it in, it sounds like your 2009 Dodge Ram 2500 has a factory 7-way so the Voyager # 39510 brake controller will only require Wiring Adapter # 3020-P to use. The LED light of the Voyager will only come on when there is a trailer connected and not just plugging it in. If you had a trailer connected to your '09 Ram 2500 and there was no green light there are a few possible causes, although I first recommend first checking to see if all of the proper trailer...
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  • How to Make 7-Way Adapter with 7-Way on Either End
    What you would have to do is use the part # WG54006-043 you referenced and then wire an additional 7-way plug to the other end like the part # 54-77-003.
    view full answer...
  • How To Connect a Trailer with 6-Way Connector to a Vehicle with a 7-Way Trailer Connection
    For your 2007 Ram truck 7-way to work with your trailer 6-way plug, you simply need to use an adapter. I recommend the Hopkins Endurance Multi-Tow Trailer Connector Adapter - 7-Way to 6-Way, 5-Way or 4-Way # HM47570 which will allow you to connect your trailer to your truck without any rewiring required. This adapter will allow the center pin to be used as 12V power or brake output with a simple change in the adapter to match your trailer (see attached video). If you want to rewire...
    view full answer...
  • Can a 6-Pole Trailer Connector Activate a Reverse Light Circuit
    I do have an option for you but there would be no way to activate reverse lights with a 6-pole trailer connector. Instead, I recommend adding a new 7-way harness using the Trailer Wiring 7-Way Upgrade Kit part # e99011. If you do not want to re-wire the trailer then you could just simply run the reverse light wire with part # 12-2-1 and then add a 7-way connector with part # 54-77-003.
    view full answer...
  • Universal 7-Way Trailer Connector to Use on a Custom Trailer
    The Bargman 7-Pole, RV-Style Connector # 50-67-008 is a 22 foot long 7-way connector for use on a trailer. It's a universal product that can be used to replace an existing 7-way or added to a newly built trailer. We offer similar products in different lengths. See the attached link for our selection. If you're looking for just the connector without the lead, part # 54-77-003 is what you'll need instead. I've also attached a help article on trailer wiring you might find useful.
    view full answer...
  • How to Connect Vehicle with 7-Way to Trailer with 5-Pole Flat Wiring for Surge Brake Lockout
    The best long-term wiring solution for connecting your vehicle that has a 7-way and your trailer that has a 5-pole flat is to install a 7-way male plug on the trailer wiring. This lets you avoid adapters like # 787196 which can become unreliable over time. We have parts like # PK12706, # A7WCB and # 54-77-003 (and others) shown on the linked page that connect to the trailer's existing wiring to give you a plug that directly matches the 7-way on your Pilot. Another better option is...
    view full answer...
  • How to Determine Functions to Wire New 7-Way to Trailer
    The only way to correctly wire a new 7-way plug and lead like the Hopkins # H20042 or 7-way plug like the Bargman # 54-77-003 is to determine the functions of the wires, and unfortunately there is no kind of universal color code to tell us what wires do what. So you'll need to determine that by using a separate 12 volt battery and using that to test each of the wires on the trailer to find out what their functions are. You will ground the negative terminal and use the battery's positive...
    view full answer...
  • Availability of 7-Way Connector Shorter than 7 Feet
    I have some options for you, but unfortunately I could not find a 7-Way 5th wheel/gooseneck wiring Connector Loop shorter than the Draw-Tite # 20027. I recommend simply looping up any excess and wrapping a zip tie # DW05727-25 around it to adjust it to a shorter length. If your tow vehicle has a 7-way at the bumper that uses a US-Style car connector, another option is to install a 5th Wheel/Gooseneck Harness in line by using the Draw-Tite # 20110. This will provide you with a 7-way connection...
    view full answer...
  • Troubleshooting Trailer Lights Staying On
    It sounds like your friend has a short somewhere in the wiring on the trailer that is causing this issue; that would be the best explanation as to the trailer lights staying on and having a constant power draw. Your friend will need to go over the wiring and find the issue, repairing or replacing as necessary with # 10-1-1. Additionally, your friend should take a look at his trailer connector and ensure it is free of corrosion as that could also be one of the issues and either clean...
    view full answer...

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Info for this part was:

Expert Research:
Jameson C
Expert Research:
Jeffrey L
Video Edited:
Andrew L
Updated by:
Laura H

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