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7-Way Super Sealed Connector w/4' Cable - Car End

7-Way Super Sealed Connector w/4' Cable - Car End

Item # 50-87-004
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50-87-004 - 7 Round - Blade Bargman Trailer Wiring
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Lowest Prices for the best trailer wiring from Bargman. 7-Way Super Sealed Connector w/4' Cable - Car End part number 50-87-004 can be ordered online at or call 1-800-940-8924 for expert service.
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Bargman Trailer Wiring - 50-87-004

  • Trailer Connectors
  • Vehicle End Connector
  • 7 Round - Blade
  • Plug and Lead
  • 0 - 5 Feet Long
  • Bargman


  • 7-way car end connector
  • Cable length: 4'

5087004 Bargman 7-Way Super Sealed 7-Way Connector

California residents: click here

Video of 7-Way Super Sealed Connector w/4' Cable - Car 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 - 50-87-004 Review

Today we're going to review part number 50-87-004. This is the Bargman 7-Way Super Sealed Connector with the four feet of cable. This is for the car end, this will give you a seven way car end connector on your vehicle and, again, the length on this is four feet. On this end is the pigtail wires that would be wired to the vehicle. This seven way has a nice spring-loaded cover that helps protect the terminals form any elements or bad conditions. That should do it for review on part number 50-87-004.

This is the Bargman 7-Way Super Sealed Connector with the four foot of cable. .

Customer Reviews

7-Way Super Sealed Connector w/4' Cable - Car End - 50-87-004

Average Customer Rating:  4.7 out of 5 stars   (29 Customer Reviews)


I was rebuilding the trailer light wiring on my truck. It was old, and living in Northwestern Montana, was also rotting out. I originally purchased a Hopkins plug from a local auto parts. The metal pins rotted out within a week and the whole fixture would not seal. Hopkins blew me off when I made a warranty request. I went looking for a better sealed plug and found this Bargman plug. It's been installed for over a year, which includes a winter on Montana roads (chemicals, salt, sand...). No rotting of the metal contacts. No leaks in the housing. Has held up very well!


Was sent the wrong item and then was told I couldn't get the corect item overnighter to me after the mess up very disappointed needed it yesterday

I can understand being disappointed with receiving the incorrect wiring. I will have our customer service team reach out to you.
-- Etrailer Expert Jenny N - 06/11/2022


This Connector seems like it is built very well. I like the fact that the harness is fully sealed from the elements.

After a year the product has held up great!!
Bill F - 09/12/2014


Good quality, works great! Used for my 5th wheel plug inside the pick up bed. Also used a junction box so I could also wire up for a bumper plug too.


I purchased this for my old dually pickup so I could plug in my gooseneck trailer. It was just what I needed.
Thanks etrailer.


Great! Fast delivery. The cable fit my truck with no drilling or modifications. High quality cable and wire. Better than came with the truck. I am very pleased with

After one year the product is still in great condition. I am still very happy with this product.
Jerry F - 09/29/2015


Once I figured out the goofy wiring colors the product worked great! Every other trailer I have uses the same wiring color scheme (I had thought it was a national standard), but this one is different. And I like the cap that says what each lug inside the plug is for.


Got exactly what was described. Good quality parts at a reasonable price. Definitely go here to order all my trailer stuff


Top quality products, better than available anywhere else. Qick service, fair pricing - you can't beat this vendor.


The 7-way sealed connector works. It eliminate connections between the wire and the block. Plus it gives you enough lead that you can put the wiring connection in a box.


Happy with their shipping method to Canada and package arrived in good condition

Thanks for a job well done!!


Very well made. Used this on a Ford Econoline Church Bus. It was long enough to reach the factory trailer wire harness.


Constructed very well and strong. We are in the housemoving and raising business and use trailers everyday. The weather proof seal is ideal for keeping snow, mud, rain, and ice from corroding the wires. Very pleased!!!


Super sealed connector well be used inside of truck bed for 5th wheel trailer. Should work out well for the needed hookup.


Very high quality assembly. Like something "Made in the USA". Reasonably priced.


You rarely score a triple play in baseball, even less in business.

We got a great product, great price, and super fast service - triple play.

Thanks so much



Just what I was looking for in a replacement unit. Pre-wired makes for a quick install and it's virtually weather proof as well.


I do not own the vehicle any longer, but it worked fine.


great quality and super easy and painless to to install


Looks like it is sealed good for external mount.


High quality product, very easy to inst all.


excellent product, shipping time reasonable, and happy w purchase


best prices and service



good job

Show More Reviews

Ask the Experts about this Bargman Trailer Wiring

  • How to Wire an Electric Winch on the Front or Rear of a Vehicle or on a Trailer
    You will want to either use a trailer mounted battery or wire the winch directly to the vehicle battery. This is because the vehicle wiring and wiring to a trailer connector cannot handle the amperage draw required by a winch. The other issue is that vehicle alternators cannot push back enough amperage over that great of a distance to power the winch properly. But there are some solutions. Take a look at the help article I have linked to the right. It covers different ways that you can...
    view full answer...
  • Diameter of Hole Needed to Mount Bargmann 7-Way Super Sealed Connector # 50-87-004
    You will need a 2 inch hole in order to mount the Bargmann 7-Way Super Sealed Connector, # 50-87-004. I have attached a diagram which illustrates the exact measurements of the connector.
    view full answer...
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  • Mounting Dimensions Of The Bargman 7-Way Super Sealed Connector 50-87-004
    I went to the warehouse and pulled a 7-Way Super Sealed Connector # 50-87-004 to measure. This connector provides 4 feet of cable, is 6" from the front edge of the trap door/cap back to where the cable flare ends. The mounting plate measures 3" x 3" on the outer edges. You will need a 2 inch hole in order to mount the Bargmann 7-Way Super Sealed Connector, # 50-87-004. I have attached a diagram which illustrates the exact measurements of the connector as well. We do ship to Canada...
    view full answer...
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  • Will Bargman 7-Way Socket # 50-87-004 Fit Bargman 7-Way Plug
    The Bargman Silicone 7-Way Plug 54006-010 that you have is a standard style 7-way plug that the # 50-87-004 that you referenced is designed to fit. I can't say we've seen this issue before so would it be possible for you to send me pictures of the connectors you have on both your truck and trailer?
    view full answer...
  • Wire Color Coding of Bargman 7-Way Super Sealed Vehicle Side Trailer Connector
    The Bargman 7-Way Super Sealed Connector # 50-87-004 you received actually uses the standard wire coloring for camping trailers. The color code is labeled on the front of the 7-way's cap to try and make it easier. We always recommend to connect wires by function instead of by color since there are more than one standard and often times those are deviated from completely. I've attached a picture of an RV standard 7-way that's common on camping trailers and is what the # 50-87-004 uses.
    view full answer...
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  • Standard And traditional Wiring Configurations For 7-Way Trailer Connectors
    There are traditional and standard wiring configurations and that can be frustrating when working with electrical connectors. We try to always remind customers to check wiring for function and not to rely on the color of the wires for that reason. The standard connectors are typically wired for fifth wheel and travel trailers and the traditional is typically used for utility and cargo trailers. I have attached a couple drawings that show the wiring configurations for standard, traditional,...
    view full answer...
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  • 7-way Recommendation to Replace a 6-Way
    I would recommend you cut off the 6-way you have at the rear of your truck and then install a # 50-87-004 in it's place. I attached a couple wiring diagrams for the two styles of connectors so that you would know how to wire up the new 7-way with the wires from the 6-way.
    view full answer...
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  • Is 7-Way Super Sealed Connector Vehicle End part # 50-87-004 Compatible with Pollak 7-Way
    Yes, the 7-Way Super Sealed Connector w/4' Cable Vehicle End part # 50-87-004 that you referenced is compatible with standard 7-way sockets like the Pollak # PK12706.
    view full answer...
  • How To Power Each Tail Light On Trailer with Just Battery
    If you were to wire each of the tail light circuits on the 7-Way Super Sealed Connector part # 50-87-004 directly to a battery this would then illuminate the lights constantly. There is really no other option for this purpose, wiring each wire to the battery would be the only way.
    view full answer...
  • Replacement 7-Way Recommendation for a 2009 Ford F-150
    You are going to need to replace the 7-way with a standard one since what you have is a non-standard connector that we don't offer anything for. For a 7-way that comes with a plug and lead you would want the part # 50-87-004. Then for a 7-way to 5-way adapter you would need the part # A75TB.
    view full answer...
  • Wiring Up Older Trailer With 7 Way Wiring To A 1997 Ford F-250
    The colors of wires for hooking up a trailer to a vehicle vary among years and models, so the best way to verify the function of each wire is with a circuit tester like Circuit Tester Kit # 40376. Have someone run through the light functions in the truck while you use the tester on each wire to determine what each wire is linked to. Then you can trace the wiring on your trailer to verify that each wire is getting attached to the correct wire on your truck. If you just have 7 bare wires...
    view full answer...
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  • Recommended Mounting Bracket For 7-Way Vehicle Side Connector
    The mounting bracket I recommend to use with the # 50-87-004 7-way connector is part # 18138. This bracket comes with the mounting screws needed to secure the 7-way connector. If you do not want to drill holes in the vehicle to mount the bracket, you can take a look at one of our no-drill brackets. The no-drill brackets feature a hose clamp that can secure the bracket to a trailer hitch so you do not have to drill holes to mount the connector. For a short bracket you would order part...
    view full answer...
  • 2 Foot Long 6-Way Vehicle to 7-Way Trailer Connector Adapter
    A 6-Way to 7-Way adapter is not all that common but we have a few. But they are not 2 feet long. The closest we have is # 47435 which end to end is around 12 inches but the wiring part between the 6 and 7-Ways is 6-1/2 inches long. What you could do is use # 50-87-004 which is 4 feet long but can be trimmed down to 2 feet. You would just need to add a trailer side 6-Way, # PK11604.
    view full answer...
  • Wiring Adapter 7-Pole Round to 7-Way Blade with 4 Feet of Cable Between Connectors
    The Pollak Trailer Connector Adapter # PK12-724 that you referenced offers 7-1/2 inches between the 2 connectors, and is 14-1/2 inches long overall. This is the longest pre-wired 7-Pole round to 7-Way blade adapter that we offer. You can use individual connectors to wire together an adapter that will have as much room between the connectors as you need. I recommend using the Bargman 7-Way Super Sealed Connector with 4 Foot Cable # 50-87-004. This 7-Way blade vehicle-end connector is pre-wired...
    view full answer...
  • Options for Extending 7-Way Vehicle-Side Connector while Towing Tent Trailer and Bike Rack
    I have a solution for you, but the Curt 7-Way Trailer Adpater for VW, Audi, and Porsch Towing Trailer with LED Lights # C57003 is designed for that specific application and would not work well if you do not have one of those manufactures as a tow vehicle. For a plug and play option, you can use the TorkLift Wiring Harness Extension # TLW6021. This harness will offer much more than the 3 inch extension you are needing, so the excess on the extension will need to be kept off the ground...
    view full answer...
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  • 7-Way Blade Replacement for Tow Vehicle and Trailer
    For a 7-way with a wire lead we have the part # 50-87-004 which you could put on your tow vehicle. Then for a 7-way for you to wire to your trailer we have the part # H20042 that also has a plug and wire lead.
    view full answer...
  • 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 something...
    view full answer...
  • Availability of Watertight 7-Way Trailer Wiring Connector
    We do offer a watertight 7-way trailer connector setup with the EZ Connector Magnetic 7-Way Trailer Connectors w/ Watertight Seal # 319-R7-02 which installs in place of a standard trailer 7-way. I attached a review video for this for you to check out as well.
    view full answer...
  • Recommended 4-Pole to 7-Pole Wiring on Vehicle
    I recommend the Universal Installation Kit for Trailer Brake Controller, # ETBC7, to convert your 4-way round into a 7-way connector. This kit will allow you to splice in your current 4-way wiring and includes the wiring, mount, circuit breakers, and other hardware to run an electric brake controller for trailer brakes. To splice in, you will have to remove the 4-way flat from this connector and use butt connectors like # DW05745-10 to pair your current trailer connector wires. This...
    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...
  • Availability of 10-Foot-Long Replacement 7-Way Vehicle Side Connector Like # 50-87-004
    We do not offer a 10-foot replacement sealed vehicle 7-way like the part you referenced, part # 50-87-004, but we do have an easy and cost-effective way for you to construct the harness you need. You can use Deka Jacketed 7-Wire cable, part # DW04914-1, which is offered by the foot, along with a connector, Pollak # PK12-707E (please see linked video). The wire gauge in the Deka cable is 12-gauge for all but the white wire, which is 10-gauge. You can use Deka butt connectors # DW05745-10...
    view full answer...
  • Brake Controller Recommendation for a Trailer with Electric Over Hydraulic Brakes
    I have a solution for you, but the Prodigy RF Brake controller part # TK94FR is not compatible with electric over hydraulic brakes. Instead I would recommend the Prodigy P2 Brake Controller part # 90885 as this controller is compatible with EOH brakes. The Demco Hydraulic Brake Line Kit # DM5425 would work fine with AL-Ko calipers. The Adapter part # F77R would work for converting the 7-way round he has on his trailer. A better solution would be to not use an adapter and match both the...
    view full answer...
  • Installing Vehicle Side Trailer Connector to Trailer Deep Cycle Battery to Power 12V Interior Lights
    The Hopkins Endurance Quick-Install 7-Way Trailer Connector with Universal Pigtail Harness - Vehicle End # HM47210 can be connected directly to your trailer battery. You will run the Red wire to the positive terminal on your battery, but the white ground wire will connect to your trailer frame, just like the negative terminal of your battery does. You just want to make sure that connection to your frame is free of rust or corrosion for a bare metal to metal connection. That will give...
    view full answer...

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Info for this part was:

Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Laura H
Updated by:
Laura H
Employee Brian T
Updated by:
Brian T

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