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Bargman 7-Pole Round Connector w/ Hardware - Trailer End - 1' Long

Bargman 7-Pole Round Connector w/ Hardware - Trailer End - 1' Long

Item # 54-67-525
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Bargman Trailer Connectors - 54-67-525
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This molded, 7-way, RV-style, trailer-end connector with a 1' long cable lets you replace a damaged wiring harness on your trailer. The kit includes butt connectors and weather-resistant shrink tubing to ensure safe and easy installation. Lowest Prices for the best trailer wiring from Bargman. Bargman 7-Pole Round Connector w/ Hardware - Trailer End - 1' Long part number 54-67-525 can be ordered online at or call 1-636-306-4830 for expert service.
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Bargman Trailer Wiring - 54-67-525

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

This molded, 7-way, RV-style, trailer-end connector with a 1' long cable lets you replace a damaged wiring harness on your trailer. The kit includes butt connectors and weather-resistant shrink tubing to ensure safe and easy installation.


  • Replacement 7-way, RV-style, molded plastic, trailer-end male plug
  • Self-cleaning contacts in plug head are designed to prevent water damage and keep dirt particles out of connection
  • Molded-on cable protects the wiring from water and debris
  • Enclosed terminals and wires provide resistance to weather damage and corrosion
  • Included butt connectors ensure easy, secure installation
    • Shrink tubing provided to protect butt connectors from water damage and abrasions
  • Compatible with thermoplastic or metal 7-way, vehicle-end connectors


  • Cable length: 1'
  • Wire configuration:
    • Yellow: center auxiliary
    • Green: tail and license lights
    • Brown: right turn and stop lights
    • Blue: electric brake
    • Black: battery charge
    • Red: left turn and stop lights
    • White: ground wire
  • Wire gauges:
    • Black/white: 10
    • Blue: 12
    • Brown/red/green/yellow: 14
  • 1-Year limited warranty

54-67-525 Bargman 7-Pole Round Connector w/ Hardware - Trailer End - 1' Long

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Customer Reviews

Bargman 7-Pole Round Connector w/ Hardware - Trailer End - 1' Long - 54-67-525

Average Customer Rating:  4.9 out of 5 stars   (38 Customer Reviews)

This molded, 7-way, RV-style, trailer-end connector with a 1' long cable lets you replace a damaged wiring harness on your trailer. The kit includes butt connectors and weather-resistant shrink tubing to ensure safe and easy installation.


Simple, straight forward wire to wire connection according to color. I cut the leads of the plug shorter so the shrink wrap would cover more of the outer insulation when heated to provide a better seal. It made it a bit tighter to crimp the connections, but worth it.

Traded camper for a new one in Sept., but it was still working fine.
Gerald J - 01/18/2018


Exactly what I needed to avoid an adapter. Excellent instructions and high quality connector.


I used this to complete a wiring harness built from scratch.


Used this part to replace a four flat plug on boat trailer. Wanted to eliminate having to use an adapter to go from four flat to seven blade on truck. My trailer has a wishbone setup for parking lights, therefore there were five wires going into four flat plug. I cut off four flat plug and wired by function (colors not standardized), from trailer to plug: white to white, yellow/brown and green/brown to green, yellow to red, green to brown. Added electrical tape to trailer end of heat shrink tubing as it did not shrink enough to form a tight seal around five small trailer wires. Served my purpose well.


The Bargman 7-Pin Round Connector is extremely well built and appears to be very durable. The included butt connector hardware is very basic and isn't up to the level of quality of the connector itself, so I ended up using Deka Heat Shrink Butt Connectors in addition to the overall piece of heat shrink tubing provided. I will be using this on my double axle boat trailer that sees a good deal of saltwater exposure so I opted to go a little overkill on the water and corrosion protection. My 2015 Toyota only has the options for a 4-pin or 7-Pin, so after I encountered some issues with a Reese 5-Pin to 7-Pin converter I decided to make a permanent alteration, and this fit the bill perfectly. It took a bit of time to figure out the proper connections as none of the charts I found worked for my setup (2016 WESCO Aluminum Double Axle) so this is the combination that worked for me.

Trailer – Bargman Connector
Yellow – Red
Blue – Yellow
Brown – Green
Green – Brown
White – White


I was fortunate to be able to find this product on to replace a damaged 7-pole round connector on my RV. This is the last of several purchases from etrailer I have made of unusual or hard to find items. The service is excellent, the staff is helpful and knowledgeable, and the delivery is very fast. This is a quality product. I wanted a molded connector just like my original connector, not the plastic replacement usually found in stores and on-line.


The part arrived very quickly. I was able to completed the installation of the part, but I have a suggestion for future orders of this part. The connectors for the 7 wires were for the most part too small for the thickness of the wires for easy insertion. I had to use my own connectors. Also the cover for the exposed wires that should shrink to form a tight cover when heated was quite thin and did not seal well, particularly on the ends where water could sleep in. . I had to go over its entire length with Gorilla tape.


Another great product from Wired up with no problems. Works GREAT!

One year later and NO problems. Great product!
Ed S - 02/16/2018


good harness solid wires nice that it comes with connectors and heat shrink

been great forgot I had to replace it
Kyle - 04/02/2020


I have in the past, ordered items from etrailer before. Happy to say that the product is just what I wanted and the company did not let me down. Thanks


The service is the best !


Great kit, simple to install, big improvement on my vehicle.


Great product that is easy to install and replaces factory part. The heat shrinking wrap provides a weatherproof barrier to the connections.


The product arrived in a timely manner and was of a high quality. I would highly recommend doing business with e trailer for anyone who needs any trailer related products and will order from them myself if I need anything further from them.


Great product. Easy installation.


etrailer has no problem with unusual requests and rapid delivery.


Very good quality. I soldered mine together to make sure it wasn't going to come apart. Works great. Nice tight fit


Products arrived fast and were as expected.

Customer service was very helpful and easy to get a hold of.


Excellent round conector 7 pole easy to install that a caveman could do''it

the product still going sir ,thanks for asking
luigi M - 06/27/2014


I have not used this product yet but I have installed it and ready for use. This product seems to be very well put together and great cuality


Again have used it yet but it looks top notch. All the pieces are they for wiring it up
Great product


Great service......part arrived very quick and was exactly what I wanted .......thank you very much


Worked well!


Worked out perfectly


as described. shipped quickly. no probl ems

Show More Reviews

See what our Experts say about this Bargman Trailer Wiring

  • Trailer Battery Charge Recommendation for Battery on Trailer that Has 4-Way
    What you will need to do is remove the 4-way of your trailer and replace it with a 7-way like the # 54-67-525 so that you can then run the black wire of the 7-way to the positive post of the battery so that it charges.
    view full answer...
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  • Trailer Brakes Lock Up When Connected To Trailer Using 6 to 7 Pole Adapter
    The issue you are having with the trailer brakes locking up as soon as the trailer connector is plugged in has to do with the pin out of the trailer side trailer connector in relation to the adapter. The most likely problem is that the battery charge line is crossed with the brake output circuit. In order to fix this you will simply need to just swap out the two wires on the back of the trailer side trailer connector or you can just rewire a new trailer connector on the trailer using the...
    view full answer...
  • How To Power Electric Trailer Tongue Jack Through 7-Way
    In order to power an electric trailer tongue jack using the 7-way trailer connector you would simply install a new trailer connector and attach the power wire from the jack to the battery charge line pin inside the trailer connector. If you go with the Bargman 7-Pole Round Connector w/ Hardware part # 54-67-525 which is what I recommend then just use the black wire. In regards to power a tailgate light bar at the rear of the trailer, you'll need to splice each of the wires into the circuits...
    view full answer...
  • How To Replace a 5-Way Trailer Connector with 8 Wires Using a 7-Way Trailer Connector
    I am not very familiar with a 5-way trailer connector that has 8 wires like what you have now but it should not be too much work to change this out. I would not be able to give a function for each wire so what you will need to do is apply a 12 volt charge from a battery to see which light illuminates. This will then let you know the functions so you can attach them to the Bargman 7-Pole Round Connector w/ Hardware part # 54-67-525. The brown wire with yellow stripe likely has the same...
    view full answer...
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  • Can a 7-Way Blade Connector Be Used For Only The Trailer Brake Connections(No Lights)?
    Yes, you can use a 7-way for only the 2 circuits if that is all that is required. The Bargman 7-Pole Round Connector # 54-67-525 has a 12 gauge blue wire that is the output for the brakes. The 10 gauge white wire is the ground wire for the 7-way connector. It is important that your trailer brakes are connected to these circuits to work properly in a 7-way female connector. The 2 wires coming from the trailer brakes are not labeled as positive and negative terminals so unless one of the...
    view full answer...
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  • Electric Trailer Brakes Are Not Releasing
    The humming sound you are hearing means that there is 12 volt power getting to the brakes and is normal. However, the brakes not releasing is, of course, irregular and what it means is that the 12 volt circuit and brake controller output circuit of the trailer have shorted together. This is possibly from a short on the trailer itself with an exposed wire, or there could also be corrosion on your trailer's 7-way. If so you can replace it with Bargman 7-Pole Round Connector # 54-67-525....
    view full answer...
  • Can Fog Lamps Used as Reverse Lights We Wired to 7-way Trailer Connector of 2020 Ram 1500
    If you were wanting to power the fog/reverse lamps using a plug like # 54-67-525, you'd simply attach the ground wire from the lamp to the plug's white wire and the lamp power wire to the yellow wire on the plug. The lamp would power up with the reverse lamps, and none of the other connections on the plug would be needed. If you wanted a cleaner-looking solution that would leave the 7-way at the bumper free and not have the plug powering your fog lamps visible, I'd go with a T-Connector...
    view full answer...
  • Converting a Trailer with a European 7-Way Connector to Fit a US Trailer Connector
    We don't carry an adapter from a European to a US 7-way trailer connector. Instead you'll need to convert the connector on the bike carrier to a US 7-way using something like # 54-67-525. Or if the 2015 Jeep Grand Cherokee has a 4-way as well you can use # HM48114. With either option it'll need to be wired by function. I've linked an article on trailer wiring that might be helpful. I would connect each wire on the bike carrier to a 12-volt battery to identify the function of each and...
    view full answer...
  • Recommended Way to Upgrade a Trailer with a 4-Way to a 7-Way
    We actually put together a kit here to upgrade a trailer with a 4-way to a 7-way with the part # e99011. You'll cut off the 4-way you have on your trailer and wire it to this junction box which will then give you an active 7-way. You'll be able to just match the colors on your 4-way to the colors in the junction box and you'll be set. Wires not needed can be left off as needed.
    view full answer...
  • Heat Shrink Tube Recommendation for Use with Bargman 7-Way # 54-67-525
    Yes, the Primary Wire Heat Shrinkable Tubing # DW05402 would work great with the 7-way harness wiring of the # 54-67-525 if you wanted to seal up the wiring after splicing.
    view full answer...
  • Inserting a New 7-Way Connector Into an Older Vehicle 7-Way
    Thanks for the picture! It looks like the tabs on the center pin on your vehicles 7-way connector are bent in slightly. You can try to bend them out by inserting some needle nose plyers into the center pin and opening them. I recommend doing that and then using more force to insert the Bargman 7-Pole Round Connector w/ Hardware item # 54-67-525 that you purchased. It being a new connector it may need some force to get it to properly seat. If this doesn't work you may need to replace your...
    view full answer...
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  • 4-Way to 7-Way Adapter Recommendation for a Trailer
    Having a 7-way female connector on your trailer is pretty uncommon. The reason you are having a hard time finding an adapter is because of that. You would want to replace the 7-way on your trailer with a male 7-way so that you can use an adapter like part # PK12716. For that you would want the part # 54-67-525.
    view full answer...
  • Adding a Second 7-Way and LED Light Strip to the Back of a 2011 Ford F-150
    A 4-Way would not work anyway because a 4-Way flat trailer connector does not have a reverse light function. What you could do is use wiring harness # 41157. It will tee in line with your factory connectors and provide an additional 7-Way trailer connector. For an LED light strip for the back of your 2011 Ford F-150 that has a reverse function we have # BLS-1103 from Pilot. These are all 60 inch long models. All of these products would normally plug into a 4-Way and then you would splice...
    view full answer...
  • Wiring Functions for 6-Way Square Connector on a 1990 Coleman Pop-Up Camper
    I think I might be about to blow your mind! Blue wire = electric brakes White wire = ground Green wire = right turn signal/brake lights Brown = tail/running lights Red = reverse lights Yellow = left turn and brake lights Some had a separate 2-pin connector with a black wire for 12 volt power and white wire for ground. If you find this to be inaccurate then the easiest way to determine the wire functions on the trailer side is to use a separate 12 volt battery and apply power to each...
    view full answer...
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  • Do etrailer and Bargman 7-Way Trailer End Connectors Have Same Use
    Yes, both connectors you mentioned are 7-way trailer end connectors with the same functions, so they do have the same basic use. The biggest difference is that theHopkins 7-Way RV Style Connector with Molded Cable - Trailer End - 8' Long - RV Standard Item # H20046 and is meant to be used with a junction box like the Trailer Wiring Junction Box # 3375601100. The other connector you asked about, the Bargman 7-Pole Connector # 54-67-525, is 1' long and comes with butt connectors so it is...
    view full answer...
  • How to Make a 7-Way to 5-Way Adapter for Trailer with Separate Turn Signals
    I can show you how to build an adapter for what you are trying to do, but there isn't one pre-made that we carry. You will need a trailer side 7-way like # 54-67-525, a signal converter # C56196, and a vehicle side 5-way # HM47900. Using the labels on the converter box you will need to wire the input side of it to the 7-way, and then wire the output side of it to the 5-way and you will have made an adapter to do what you are looking to do.
    view full answer...
  • Using a 7-Way to 5-Flat Trailer Adapter # HM47675 for Trailer with Electric Brakes
    The 5th wire on a 5-pole flat trailer connector like the Wesbar harness # W002290 can be used for either a reverse lockout function (as on a surge brake coupler) or to deliver a signal for electric brakes. It just depends on how your trailer is wired. 7- to 5-pole adapters like the Hopkins # HM47675 will typically take the 7-way's center pin function and assign that to the 5th pole on the 5-pole output. For an RV-style 7-way this center pin usually carries the reverse light signal, not...
    view full answer...
  • Wiring Adapter To Convert 13 Pin European Trailer Connector to 5-Way Flat Or 7-Way Blade Connection
    You are going to have to create your own wiring harness as when I spoke to Thule they do not make a conversion kit for what you are needing. You will need a Curt 2 to 3 Wire Tail Light Converter # C56196 and a either a Hopkins Endurance 5-Way Flat Trailer Connector # HM47910 or a Bargman 7-Pole Round Connector # 54-67-525 I was unable to locate the exact color wiring used with your 8 pin connector, so I have included the chart that can be used to identify each of the wires on your Thule...
    view full answer...
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  • Is Heat Shrink Available for a Replacement 7-Way Molded Trailer Wire Connector?
    I have a solution for you but the 7-Way Molded Trailer Wire Connector, 4' Long item # H20043 does not include heat shrink to cover the spliced area. You will need the Primary Wire Heat Shrinkable Tubing - 8 to 2 Gauge - Black - 6" Long - Qty 6 item # DW05402. If you do not need a 4' long replacement wire then I recommend the Bargman 7-Pole Round Connector w/ Hardware - Trailer End - 1' Long item # 54-67-525 which includes the heat shrink.
    view full answer...
  • Troubleshooting Trailer Running Lights Not Working With 2019 Ram 3500
    Typically when parking or clearance lights stop functioning, the issue is a poor ground connection so I'm confident that's the problem here. What you'll need to do is make sure your grounds are attached to bare metal surfaces and free of any paint, dirt or corrosion. The other potential problem are your connectors. You will want to check the trailer connector on your 2019 Ram 3500 and trailer for corrosion, which can be green or white in color. A build-up of corrosion can interfere with...
    view full answer...
  • Will the Curt Echo Brake Controller Work With a 5 to 7-Way Adapter
    The Curt Echo Wireless Trailer Brake Controller part # C51180 won't work with an adapter like the Adapter 7 Pole to 5 Pole Flat part # A75TB because the 5th pin on a 5-way is typically for reverse so that's what it would correspond to on the Curt Echo. Therefore, you'd need to replace the 5-way with a 7-way, the Bargman 7-Pole Round Connector part # 54-67-525.
    view full answer...
  • How to Connect Horse Trailer with 6 Way Connector to 7 Way Vehicle Plug
    To start, the colors on the trailer really isn't reliable since someone may have changed the wiring at some point; you'll need to test each circuit individually to verify which function it carries and work from there. I'm attaching a diagram of the typical wiring for a 6 way connection that you can cross reference and determine if your wiring matches up. The difference between a 6 way and 7 way connection is that a 7 way connection has a circuit for the reverse lights on the trailer. Now,...
    view full answer...
    Image 1 for
  • Electric Brakes And Lighting For The Roadmaster Tow Dolly RM3477
    The great benefit to using a tow dolly is that it eliminates the need for installing a base plate, installing difficult wiring, or purchasing an expensive supplemental braking system. Also the Roadmaster Tow Dolly with Electric Brakes # RM-2050-1 is fully wired for brake lights and turn signals. The Tow Dolly comes with bare wires so you would need to purchase a 4-way # 002402 or 7-way connector like # 54-67-525 seperately to match up to your tow vehicle's wiring. Included are video...
    view full answer...
  • Recommended 7-Way Connector for Trailer and Wire for 12V Trickle Charge
    Since I am not entirely sure what you have on your trailer, I will give you a few different options for a 7-way trailer end connector. If you only need the plug, I recommend the Pollak Black Plastic, 7-Pole, RV-Style Trailer Connector - Trailer End # PK12706. For a plug that is pre-wired with a little slack to make connections, I recommend the Bargman 7-Pole Round Connector w/ Hardware - Trailer End - 1' Long # 54-67-525. If you would like to have more than a little bit of cable running...
    view full answer...

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Info for this part was:

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Expert Research:
Mike L
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Expert Research:
Jameson C
Employee Tyler C
Written by:
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Employee Laura H
Updated by:
Laura H
Employee Brian T
Updated by:
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