Bargman 7-Pole, RV-Style Connector - Trailer End - 22' Long

Bargman 7-Pole, RV-Style Connector - Trailer End - 22' Long

Item # 50-67-008

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Bargman Trailer Connectors - 50-67-008
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This molded, 7-way, RV-style, trailer-end connector with a 22' long cable lets you replace a damaged wiring harness on your trailer. Connector includes self-cleaning contacts and a molded-on cable that helps to prevent damage from dirt and water. Lowest Prices for the best wiring from Bargman. Bargman 7-Pole, RV-Style Connector - Trailer End - 22' Long part number 50-67-008 can be ordered online at or call 800-298-8924 for expert service.
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  • Reviews (11)
  • Q & A (26)
  • Videos (2)
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  • Why etrailer?

Bargman Wiring - 50-67-008

  • Trailer Connectors
  • Trailer End Connector
  • 7 Blade
  • Plug and Lead
  • Bargman
  • 22 Feet Long

This molded, 7-way, RV-style, trailer-end connector with a 22' long cable lets you replace a damaged wiring harness on your trailer. Connector includes self-cleaning contacts and a molded-on cable that helps to prevent damage from dirt and water.


  • 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
  • Color-coded, stripped wires ensure simple installation
  • Compatible with thermoplastic or metal 7-way, vehicle-end connectors


  • Cable length: 22'
  • 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

50-67-008 Bargman 7-Pole Round Connector - Trailer End - 22' Long

Video of Bargman 7-Pole, RV-Style Connector - Trailer End - 22' Long

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

Video Transcript for Bargman 7-Way Molded Connector Review

Speaker 1: Today we'll be having a look at and showing you how to install the Bargman seven way molded trailer connector with a 15 foot cable. Also available in a 10, 18, and 22 feet length. Here's what our cable looks like installed. Now the main reason your going to need a new cable like this one is because if you didn't adequately have the slack tied up when your towing your trailer, it can drag on the ground, causing abrasion, causing a short and it won't work properly anymore.Hooking up to our tow vehicle is as simple as lifting our door, making sure the notch on our cable faces up to push it in. And then the latch on the door will grab the tab and hold it in place. So you don't have to worry about it getting pulled out.

Well, one thing that's nice about this connector, compared to others on the market, is that when we need to unplug from our truck, we have these nice finger tabs here to get an easy grip on it, as we pull out.Now one thing that sets this cable apart from others in the market, is where the end of our cable meets our seven way connector, right here. It's molded together. And this will prevent moisture from getting inside, offering a superior weather resistance, and we don't have to worry about corrosion happening where the wires are connected to our terminals inside the connector. This will cause better electrical performance over the course of time. This thick insulation will provide protection from the elements, and also will help protect it from abrasion if it we're to rub against something.Now that we've gone over some features, we'll show you how to get it installed.

We need to locate the junction box where our wiring connections are made. In our particular case, this is our junction box in our trailer. You'll typically find this near the front. Remove the lid. We'll now remove the nuts on all of our terminals, that hold our wires in place.

Now in our particular case, our factory seven way wire comes into the top here, and all the connections are these top connectors right here. So, we'll one at a time remove the terminals that cover up those wires, then remove those wires themselves and place back on the ones on the bottom that cover them up. This way, we can easily make our connection without becoming confused.Okay, now that we have all seven of our wires disconnected from the terminals on our junction box, we can pull those away, remove our grommet from those wires, you'll keep the grommet, then we'll remove the cable from the trailer. We've gone ahead and routed our new cable through the cable retainer on our frame, and we'll install the ends into our grommet. Okay, we installed our grommet back into our junction box, like the way it was originally.

Now we'll cut off the excess of our wires. Strip out the installation. And we'll crimp on new rain terminals which we have available on our website to each one of the wires. And we'll place them on to the corresponding stud where they belong.This blue wire here, that's for our electric trailer break output. So I'll put that one to the terminal that's label for our electric brakes. Next one's our green wire, and that one is for our tail lights. We'll do our brown wire next. That one's for our right turn signal. Your yellow wire next. That's for a reverse white output, or reverse yellow one for hydraulic trailer brakes, if your trailer had hydraulic brakes. Now we'll do a red wire. That one's for our left turn signal. Now we'll do our black wire. That's for our constant 12 volt power. That leaves us with the white wire. That's our ground wire. Now we'll reinstall all of our nuts.So, with all of our connections now made, we'll reinstall our cover. Now we'll test our our wiring by taking our plug and going into a tester. You can also plug it into the back of your truck. And we'll test out all of our functions. Now we'll start by turning our tail lights on. Okay, those are working good. Now we'll try our brake lights. Brake lights are working good. Do a right turn signal now. That's working good. Try out a left turn signal. That's working great.And that completes our look at and installation of the Bargman seven way molded trailer connector with a 15 foot cable, part number 50-67-103.

Customer Reviews

Bargman 7-Pole, RV-Style Connector - Trailer End - 22' Long - 50-67-008

Average Customer Rating:  4.7 out of 5 stars   (11 Customer Reviews)

This molded, 7-way, RV-style, trailer-end connector with a 22' long cable lets you replace a damaged wiring harness on your trailer. Connector includes self-cleaning contacts and a molded-on cable that helps to prevent damage from dirt and water.

- 50-67-008

Looks good , haven't installed yet. 596342

- 50-67-008

I haven't installed the parts yet but the bargman connector looks better made than the one that came on my newer trailer. The junction box 38656 is going to work great on my older trailer, making it easier to rewire it with a bargman connector 50-67-008. 175590

- 50-67-008

Nicely made, good quality material. Extra long cable was exactly what I was looking for. 381235

- 50-67-008

5 stars for the quality of this product, The electrical is well wrapped and the plastic is a good quality. I have yet to install the wiring harness in my 2000 17ft Casita Spirit Deluxe. Whoever owned the trailer before nearly caused it to burn down with all the splicing of the original wires into the 2 converter boxes with 8 electrical outlets in this tiny trailer. They dragged the original harness on 2 separate occasions. I looked all over for a longer one, e-trailer had it at a reasonable price. I feel confident that I will have good results. Thank you! 662845

- 50-67-008

This was exactly what I was looking for. I am re-wiring my landscape trailer from the flat 4 prong plug to this round 7 prong. Now I have no need for a adapter. And with this long set up I will have one less splice. I have been searching for a item like this one. But all the places I went nobody sold them: Rural King, TSC, Napa, or even a Triple Crown dealer. Thank you Etrailer for-such a wide selection of products to amazing price. 713434

- 50-67-008

Perfect length, great quality super fast shipping 695376

- 50-67-008

This is a great product. Very good quality & now after a year of use on my livestock trailer its still like new. One thing I really liked was that it has a sealed head so the usual problems with corrosion are eliminated. 599282

- 50-67-008

Excellent product and unbelievable support in getting it hooked up correctly. Always satisfied with my purchases! 513224

- 50-67-008

Very nicely built cable. BUT-- Be aware of color coding on connections. When used with Junction Box 38656, the colors do not match at all. This made for a few hours of unnecessary troubleshooting. 219744

- 50-67-008

Great job - cable arrived a day earlier than expected! 156217

- 50-67-008

Exactly as ordered. Timely delivery. Well priced. 137583


Ask the Experts about this Bargman Wiring

Do you have a question about this Wiring?

  • How to Determine Trailer Wiring Functions on a Travel Trailer for 7-Way Replacement
  • Trailer wiring color codes can vary greatly so I have a solution for you, but I can't tell you which color wire goes where on your trailer for wiring up a new 7-way. However, you may look around the wiring junction box or pin box of your trailer. There may be a diagram there. Instead you will want to use a jumper wire from a 12 volt source like a vehicle battery to apply voltage to all of the wires of your trailer wiring to see what activates. It can help to use masking tape to label...
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  • Replacement 7-Way Trailer Connector to Rewire an 18 Foot Gooseneck Trailer
  • The 22 foot long Bargman molded 7-way trailer conector, part # 50-67-008, is probably enough for your trailer. It depnds on how much, if any, of the existing wire you want to keep and connect to the new harness. If you need to make it longer you can use part # DW04914-1, which is sold by the foot. The wire colors on the 7-way and the extra wire are the same.
    view full answer...

  • Compatibility of Aluminum Wire With Copper Trailer Wiring
  • You do not want to mix aluminum with copper like found in the trailer connectors like # 50-67-008 as well as the trailer lights and brake magnets. The dissimilar metals will cause galvanic corrosion and can cause wire failure. I recommend instead using # 12-1-1 and # 16-1-1 sold by the foot for your wiring needs.
    view full answer...

  • Instructions to Wire a Trailer for Electric Brakes
  • It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean metal surface on the trailer. I have included a diagram for you.
    view full answer...

  • Adding a 7-Way Trailer Connector to a 28 Foot Trailer with Electric Brakes
  • The 5th function for 40 ft. Wishbone 5-Way Trailer Harness with 30" Ground and 5 ft. Blue Wire Item # A40W5B is meant to go into an electric reverse lockout on a trailer with surge brakes. On the vehicle side the 5th function ties into the reverse lights so that when the vehicle is in reverse the lockout solenoid will be energized and not allow brake fluid to actuate the brakes. Usually on a trailer with electric brakes both the trailer and the vehicle will have a 7-Way trailer connector....
    view full answer...

  • Which Trailer Wiring Connector Has a Pin for Reverse Lights
  • In order to add reverse lights to a trailer would would need to have a 7-Way on the trailer, like # 50-67-008, and a 7-Way on the vehicle. On the vehicle side, if you are looking at the back of the 7-Way where the wires connect, the reverse light circuit is the center pin. It will need to connect to a reverse light wire behind one of the vehicle tail lights. On the trailer side the matching pin is again the center pin. So from that pin, you would route wire to reverse lights. Reverse...
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  • Wire Color and Functions of Bargman 7-Pole, RV-Style Connector # 50-67-008
  • The key here is that the functions are in the correct locations. Wire color is going to vary from manufacturer to manufacturer which is why you should always wire by function and use a circuit tester like # 3808 when wiring in a connector like # 50-67-008. The reason we list the wire color and functions on the product page is because there is no official industry standard for wire color. If you tried to wire by matching colors, there is a very good chance that it will be wired incorrectly....
    view full answer...

  • Installing 7-Way Wiring Connector to Trailer For Reverse Light Function
  • The center pin on your 7-way on the trailer side is the reverse light function. These can be different colors, which I get is confusing, but you will need to do some deductive reasoning or use a circuit tester to determine the function and color. For instance the yellow wire on the Hopkins # H20044 or the Bargman # 50-67-008 is the reverse wire which isn't the norm because the yellow wire is typically the left turn and left brake wire. I've attached a photo and an article to assist. You...
    view full answer...

  • Adding a New 7-Way Trailer Connector and Wiring to a Car Hauler Trailer
  • You will likely need some additional wire to reach the lights when installing 7-Way connector # HM20087. If you just want 4-wire you can use # DW04923-1, sold by the foot, or # 16-4B-1, also sold by the foot. You will also need some butt connectors such as heat shrink version # DW05744-5. If you want all 7-wires you can use # DW04914-1 which is sold by the foot as well. Another option is a 7-Way that is considerably longer, # 50-67-008, which at 22 feet long is more than twice the length...
    view full answer...

  • Troubleshooting Trailer 12V Charging Circuit That Does Not Re-Charge Batteries Fully
  • The 12V auxiliary power feed on your truck's 7-way can deliver a maintenance charge to the trailer's on-board batteries, but it does not carry enough juice to re-charge a battery that is depleted. A depleted battery really needs to be re-charged by a shore-power charger like one of the CTEK units, such as their # CTEK56353. I own one of their chargers (for about 6 years now) and it works well in my always-on 24/7/365 duty cycle on my motorcycle and lawn mower batteries. Another possibility...
    view full answer...

  • Troubleshooting a Hallmark Trailer That Lost Trailer Wiring Power After Replacing the 7-Way
  • First thing I would do is test the 7-way at the rear of your 2009 Ford F150 for proper function with a circuit tester like our part # PTW2993. This will determine if the problem is on the truck or the trailer. Check out the video I attached to see how this is done. If the voltage isn't where its supposed to be on your truck connector then most likely there are some trailer wiring fuses or relays that might be blown on your truck. You will want to inspect them and replace as necessary. If...
    view full answer...

  • Installing The Bargman 7-Way Molded Trailer End Connector # 50-67-008 To A Viking Pop-Up Camper
  • The wire color code on the Bargman 7-Way Molded Trailer End Connector, part # 50-67-008, is White - Ground Red - Left Turn and Brake Brown - Right Turn and Brake Green - Tail Lights Blue - Electric Brakes Black - 12v power Yellow - Auxiliary/Reverse Lights I would recommend to use a circuit tester like the Quickee Tester, part # 3808, and test the wires on your Viking pop-up camper for function. Once you know what function each wire carries, you will be able to wire the...
    view full answer...

  • What Wire Gauges does Bargman 7-Way Molded Trailer End Connector and Cabel Use
  • I spoke with my contact at Bargman and he said the gauges are as follows: Black and White: 10 gague Blue: 12 gauge Brown, Red, Green, Yellow: 14 gauge
    view full answer...

  • How Much Slack Is Needed In Trailer Wire Connection To The Tow Vehicle?
  • The length of wire desired depends on your vehicle connection and your personal preference. You want enough slack for turning, but not so much for dragging as you mentioned. A little extra slack isn't a problem and not enough could lead to stress and wire connection problems. In general, you will want between 16 inches and 24 inches of wire beyond the tongue depending on where your connection point is on your tow vehicle.
    view full answer...

  • When Installing a 7-Way on a Trailer is a Junction Box Required
  • You don't have to install a junction box when you install the # 50-67-008 on your trailer. If you wanted you could just run the wires to each function as needed. The black wire of this connector would be the one to use for the charge wire of your battery. Using a junction box like the part # 38656 would make installing the wiring easier though. I attached an install video for it for you to check out.
    view full answer...

  • Which Wire is the Reverse Wire on the 7-Way Molded Trailer End Connector
  • On the 7-Way Molded Trailer End Connector, # 50-67-008, the reverse light wire is yellow. It is the wire attached to the center pole of the plug.
    view full answer...

  • Troubleshooting Running Lights and Brakes Not Working Correctly on a Haulmark Trailer
  • The problem with the running lights not working could be several things. The first thing I would check is to make sure the 7-Way on your 2006 Chevy Silverado is getting a signal for the running lights. Using a circuit tester like # 40376, test the running light circuit which should be the pin in the 11 oclock position if looking at the face of the plug. If the signal is coming through, make sure that the corresponding pin on the trailer side (pin in the 1 oclock position if looking...
    view full answer...

  • New Wiring for a 35 Foot Long Gooseneck Trailer with 4 LED Tail Lights
  • I have included a couple of links to the right that should help out a lot. One of the links covers everything you ever wanted to know about trailer lights, including where they need to be and what types based on the length and width of a trailer. The other does include some wiring and connector diagrams that should be helpful. It sounds like in addition to the lights you would benefit from a new 7-Way trailer connector such as # 50-67-008 which is 22 feet long, so it will get you close....
    view full answer...

  • What is the Function of the Black Wire on the Bargman 7-Pole Trailer Connector # 50-67-008
  • The black wire on the Bargman 7-Pole Trailer Connector, # 50-67-008, will carry 12 volt power from the tow vehicle for accessories on the trailer that require a 12 volt power source such as an additional trailer battery, breakaway battery or any other accessory. This wire will carry 12 volt power from the tow vehicles battery. You can attach it where you would like, or tie it off if you do not have a use for that function. I have listed the functions of the wires below. Yellow: center...
    view full answer...

  • Horse Trailer Electric Brakes Lock Up When Backing Up the Trailer
  • There could be a short in the truck or trailer side connector that occurs when the vehicle is put in reverse. The center pin is typically the reverse light circuit. You will want to make sure that the truck and trailer side connectors are clean and free of corrosion inside and out. Inspect the power wires to the magnets and look for pinched, frayed, or damaged wires and fix as needed. Make sure the ground wires are attached to clean and corrosion free bare metal surfaces.
    view full answer...

  • Extra Long Coiled RV Style 7-way Connector
  • We do have longer connectors, like the WesBarg 7-Way, RV-Style Connector # WG54006-046 which is 12 feet long. We also have connectors that aren't coiled like the Bargman 7-Pole, RV-Style Connector - Trailer End # 50-67-008 which is 22 feet long.
    view full answer...

  • Blade Style and Round Pin Style Trailer Side 7-Way Connectors
  • The Bargman 7-Pole, RV-Style Connector, # 50-67-008, is a blade style connector. If you see the term RV style that is usually and indicator that it is a blade style. If you need a 7-Way round pin connector you can use # PK11702. You would need to attach the wires yourself by taking apart the connector to access the location inside where the wires attach.
    view full answer...

  • Recommended Components Needed To Add Axles And Brakes To Tandem Trailer
  • The first thing to consider is what the trailer is to be used for. If it is a boat trailer then electric brakes would not be the way to go, as water and electric do not work well together. I will make recommendations with the options you listed you want. Our 3,500 lb axles have the spring seats at 74 inches. If it is not a boat trailer the axle I recommend is the Dexter Trailer Axle w/ Electric Brakes, part # 35545E-ST-EZ-89. This axle measures 89 inches and includes the Includes electric...
    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 Remove Tail Light Lens on 2009 Box Trailer
  • Normally to remove a light lens there would be screws to remove to remove the lens. If you do not see screws then the lens may be a snap on. To remove a snap on lens you could use a flat head screw driver to pry the the lens off carefully. Since I am not sure of your exact tail light assembly it is hard to say exactly how to remove the lens or if the lens is removable at all. Some tail lights are sealed to be submersible. If you want to send me a photo of the light I can give you more specific...
    view full answer...

  • Parts Need to Replace Hydraulic Brakes with Electric Brakes on a 10K Tandem Axle Trailer
  • First, check the drum to see if it says anything about only working with hydraulic brakes. If it does then you would also need to replace the hub and drum assemblies to ones that are compatible with electric brakes. If this is the case I would need to know the inner and outer bearing numbers and the bolt pattern of the wheels. If the drums can be used with electric brakes then just measure the inner diameter of the drum and the width where the brake shoes make contact with the drum. Based...
    view full answer...

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Info for this part was:

Written by:
Tyler C
Expert Research:
Patrick B
Expert Research:
Michael H
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Jeff D
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Jameson C
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John H
Expert Research:
Adam R
Video by:
Joshua S
Video Edited:
Chris R
Installed by:
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