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Epicord 7-Way Molded Trailer Plug - 8' Long

Epicord 7-Way Molded Trailer Plug - 8' Long

Item # 277-000143
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Epicord Trailer Connectors - 277-000143
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Lowest Prices for the best wiring from Epicord. Epicord 7-Way Molded Trailer Plug - 8' Long part number 277-000143 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Reviews (54)
  • Q & A (20)
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  • Why etrailer?

Epicord Wiring - 277-000143

  • Trailer Connectors
  • Trailer End Connector
  • 7 Blade
  • Plug and Lead
  • Epicord
  • 6 - 10 Feet Long


  • Epicord 7-way molded trailer plug
  • 8' Long heavy-duty cord
  • Weatherproof and corrosion resistant
  • 1-Year Warranty
  • cETL and ETLus Listing

Wiring Code
Molded Connector Function Usual Trailer Wire
White WireGroundWhite Wire
Red WireLeft Turn and BrakeYellow Wire
Brown WireRight Turn and BrakeGreen Wire
Green WireTail LightsBrown Wire
Blue WireBrake PowerBlue Wire
Black Wire12 Volt (hot lead)Black Wire
Yellow WireAux. -

RV078-8 Epicord 7-Way Molded Trailer Plug - 8' Long

83776






Customer Reviews

Epicord 7-Way Molded Trailer Plug - 8' Long - 277-000143

Average Customer Rating:  4.8 out of 5 stars   (54 Customer Reviews)


- 277-000143
by:

Very well constructed. The wires are good quality and the plug connects securely to the receptacle in my truck. The old connector had a replacement plug on it and it was shorting causing issues with the lights and brakes on the trailer. Rather than trying to put on a new plug I went with a whole connector assembly and it works great. 641072



- 277-000143
by:

Item # 277-000143. And distribution box. Been on trailer about a year now, cord and all contacts in box have no rust or corrosion, GREAT for tracking down shorts. Lost one star because, the wires on cord are not correct colors, so had to use mutimeter to chk right connections. Would definitely recommend these products 486513



- 277-000143
by:

Cable was just like advertised perfect. 595641



- 277-000143
by:

Cord is made of sturdy material and comes with 8' of length to attach to your trailer. The molded plug is solid and connects great to the receptacle on my truck. You will not be disappointed in this product, I also purchased a terminal box that made install a breeze and looks good too. 442706


Comments
Excellent sturdy wiring and harness, It is still holding up strong.
Richard P - 10/14/2018

44616

- 277-000143
by:

The item i ordered was just as described. What impressed me the most was that i ordered it on sunday and received it within 3 days. I realize our states border each other but still pretty impressive. 543484



- 277-000143
by:

I purchased a trailer tow electric cable for my camper. The quality of the cord is excellent, the price is very affordable and delivery of cord came days earlier than expected. Installation was done in less than an hour. Overall I am very pleased with the product and the customer service that I received from dealer! Will definitely be a return customer ! Dave 572550



- 277-000143
by:

New wire harness showed up within a week of purchase and was exactly what I needed. 853980



- 277-000143
by:

Perfect! Works like a champ, for years I've used plastic conduit and electrical tape, it never holds up and looks bad. This cable and a junction box made my trailer rebuilt project look professional! 850641



- 277-000143
by:

Product was received in a timely fashion is exactly as advertised. 820251



- 277-000143
by:

I like this item a lot, it seems good quality and is exactly what I needed. The only downside is that the wire colors are not standard. I was aware of this from other reviews, so I made sure to verify which wire was which before connecting them permanently. As always etrailer's service, prices and selection is top notch. I give the product 4 stars, but etrailer is still 5 stars in my book! 817264



- 277-000143
by:

Had to do a few minor modifications to get them to work, but i was happy to use your products. I thought that modifying electric brakes to work on boat trailer would involve some minor modifications.Over all i was very satisfied with the quality of your components. Thanks. 773602



- 277-000143
by:

I ordered the junction box and trailer cable plug. Both arrived very quickly and were easy to install. Great company to deal with as I have ordered several times and have always had good experiences. 762681



- 277-000143
by:

Great Product, Even better customer ser vice 757430



- 277-000143
by:

It was just what i was looking for and i received on a very good conditions, 749443



- 277-000143
by:

Very easy transaction, everything was shipped quickly and good quality 728837



- 277-000143
by:

Perfect replacement 726624



- 277-000143
by:

Have installed the 7 way chord Excellent product and fast service fro etrailer 726152



- 277-000143
by:

Very satisfied. Shipped quickly and product was received as expected. Will buy from you again. 724858



- 277-000143
by:

The parts are good quality, and the delivery is fast. 714901



- 277-000143
by:

Product was as described online. Arrived on time. 713693



- 277-000143
by:

Excellent cable. Have used this cable as an upgrade to both my trailers! 711348



- 277-000143
by:

Very fast delivery, excellent product received, exactly as described, already installed. Thanks 700536



- 277-000143
by:

receive the package very quickly 695367



- 277-000143
by:

Product was good installed easy 686683



- 277-000143
by:

product received on time looking forward to doing the installation and hoping current problem will be resolved 646603


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Ask the Experts about this Epicord Wiring

  • Recommended Replacement Molded 7-way Trailer Plug and Cord
    The Epicord # 277-000143 7-way plug you'd looked at would indeed make a better connection than something like the # H20044 that just has the single contact. Keep in mind, the wire color coding on this plug/harness might be different than what you already have, so be sure to look at the chart on the # 277-000143 product page that lists the wire colors and their purpose. Are you having issues with the plug not staying fully seated? Because the spring loaded lid for the trailer connector...
    view full answer...
  • Troubleshooting Trailer Wiring Install Where Blinkers Activate Both Sides of Trailer
    Sounds like you might have swapped the turn signal circuits and the running light circuit on your trailer wiring. This would cause both of the blinkers to flash when you put on either blinker. So what I would recommend you do is start over with the wiring connects. Use a jumper wire from a 12 volt battery positive post to run voltage to each of the trailer wiring circuits so that you can identify what all of the circuits are. And then use the diagram you found already to make the connections...
    view full answer...
  • Parts Needed To Install 7 Way Plug on Trailer
    Since a 4 way connection does not provide you with the capabilities to control the trailer's brakes, you would need to convert your boat's 4 way connector into a 7 way using something like the Epicord # 277-000143. In order to make wiring a bit easier and more organized, I also recommend using a Junction Box like the # 38656 so that you can connect all of the trailer wires to the box and then neatly wire the Epicord to the box. This will help ensure that all of your wiring is cleanly installed...
    view full answer...
  • Solution for Wiring in 7-Way to Vehicle Wiring and Trailer Lighting Functions Stop Working
    Since not all trailer wiring colors match your best option is going to be to use a circuit tester like part # PTW2993 to identify all of the functions of the wiring on your vehicle and then using the attached diagram wire it up accordingly. I attached a video that shows how to test the wires as well.
    view full answer...
  • What Gauge Wires are Used Epicord 7-way Connector part # 277-000143
    The Epicord 7-Way Molded Trailer Plug part # 277-000143 has three different gauge wires in the cable. There are two 10 Gauge wires (black/white) there is one 12 gauge wire (blue) then there are four 14 gauge wires (yellow,green.brown and red). These sizes are typical of most 7-way trailer end connectors.
    view full answer...
  • 7-Way Socket to Go with 7-Way Plug and Lead # 277-000143
    For a 7-way socket to match the part # 277-000143 the part # A10-7082VP is a great option. Both of these fit the standard RV blade style 7-ways.
    view full answer...
  • Is there A Back Up Light Function on the Epicord 7-Way Molded Trailer Plug?
    Yes, this Epicord 7-Way Molded Trailer Plug # 277-000143 has all the functions of a 7-way. Including the back up circuit of vehicle's wiring harness to the Back up lights of the trailer. I have also attached a help article on the functions of a 7-way.
    view full answer...
  • Parts Needed to Replace Trailer Connector on 2018 Rockwood A122s Pop Up Camper
    I have a solution for you, but there is not a "plug and play" type wiring solution available for this so you would need to cut your existing wires. Once you've done that, you can use the Epicord 7-Way Molded Trailer Plug with Junction Box - 10' Long # 277-000141 which is 10-ft long and comes with a junction box already attached. If you wanted to go with something slightly shorter, like the # 277-000143 that you were looking at, you can use that 7 way and add the Junction Box # 3375601101...
    view full answer...
  • Replacement 7-Way Recommendation for Trailer with Damaged 7-Way Wiring
    We have a replacement 7-way tha has an 8 foot long lead section you can use to wire to your trailer's wiring as part # 277-000143. For a pack of 10 butt connectors then we have the part # DW05745-10.
    view full answer...
  • Will Epicord 7-Way Molded Trailer Plug # 277-000143 Work with the 7-Way on Chevy Trucks
    You should not have any issues using Epicord 7-Way Molded Trailer Plug # 277-000143 with the 7-Way on your Chevy truck. It is a standard 7-Way just a slightly different design for the pins like you said. This design allows for more contact between the pins on the truck's 7-Way and trailer 7-Way. We have not heard any complaints from our customers on this part either. I have included a link to a video review of this wiring harness for you.
    view full answer...
  • Recommended 7-Way Trailer Wiring Harness for Featherlite Car Trailer
    For your Featherlite car trailer you referenced, I recommend the etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector # e99011. This will allow you to connect the wires within a junction box to avoid in-line splicing.
    view full answer...
  • Converting Hydraulic Surge Brakes to Electric Trailer Brakes on Boat Trailer
    If you want to convert from hydraulic to electric brakes, you will need to replace the entire brake assembly including the backing plate. The assemblies will come with the shoes, magnets, and backing plate. Then you will need brake wiring # 10-1-1 to run up to a 7-way. The easy connection is to use a molded cord like # 277-000143 and some heat shrink connectors like # DW05745-10. I recommend disconnecting your wiring prior to launching or loading your boat at the ramp. Water and...
    view full answer...
  • Will Epicord 7-Way Molded Trailer Plug # 277-000143 Fit 7-Way Connector on 2017 Mercedes Sprinter
    Assuming that your 2017 Mercedes Sprinter 2500 has a 7-Way trailer connector (either factory or aftermarket) then yes, the Epicord 7-Way Molded Trailer Plug # 277-000143 will plug into the van's trailer connector. I have linked a video review of this connector for you.
    view full answer...
  • Why Do Some 7-way Plugs Use Dual Contact Surfaces
    A 7-way (female) vehicle socket like # PK12-707E has a single blade contact; these fit in between the dual contact surfaces in a (male) trailer plug like # 54006-059, # 277-000143 or # A10-7W10 and the connector (type BB) shown in your photo. Some 7-way male plugs will use a single blade contact, such as the plug on Hopkins 7-way extension # HM20049. This item's female socket and male plug happen to both use the single contact. Both types are compatible with each other. The Bargman...
    view full answer...
  • 7-Way Connector and Fusion LED Trailer Lights Functions by Wire Color
    I can tell you which wires on each the light and plug are for, though you will want to use a circuit tester such as # 40376 to verify the functions. The the Fusion LED Trailer Tail Light # STL211XRFHB has a 4-wire pigtail. The white wire is ground, brown wire is backup light, red wire is brake light and black wire is tail light. The Epicord 7-Way Molded Trailer Plug # 277-000143 is a 7-way connector that has the same functions as you see in the accompanying diagram. The yellow wire...
    view full answer...
  • Troubleshooting Trailer 7-Way Plug that Wants to Disconnect from Vehicle Connector
    The standard 7-way trailer connectors have always had the same diameter. There isn't a smaller diameter size that's out there that your trailer would have and be causing the problems you mentioned. Most likely your best solution is to replace the 7-way plug on your trailer like with the plug and lead part # 277-000143. Or for just the plug you could use the part # PK12706 and you'd be good.
    view full answer...
  • Making 7-Way to Camper Shell Third Brake Light Adapter
    You can use 7-way trailer wiring with the module part # PP20-702 to provide power to the third brake light of your camper shell/cap. Basically the stop/turn circuits of the trailer wiring need to run to the yellow wires of this module and then the green wire goes to the third brake light. For an 8 foot 7-way plug and lead you'd want the part # 277-000143. The wire colors of this you'd run to the module are red and brown.
    view full answer...
  • Replacement 7-Way Plug and Lead to Replace Damaged One that Got Drug While Driving
    You'll want to install a new plug and lead on your trailer to replace the damaged one. Would be a good idea to go with a longer one than you have now. The the adapter you referenced has a 7-way I am fairly certain that's the type of trailer connector you have. Especially since that's very common on camper trailers like you have. We have the part # 277-000143 which is a 7-way that has an 8 foot long lead that would work well.
    view full answer...
  • Parts Needed to Add Electric Drum Brakes to Boat Trailer with 3500-lb Axle
    The Axle Tek 10-inch electric trailer drum brake assemblies # AKEBRK-35L-SA and # AKEBRK-35R-SA are the left- and right-hand drum brake mechanisms only and do not include hubs/drums. The pair has sufficient stopping power for a 3500-lb-rated axle. An example of a compatible hub/drum assembly is the Axle Tek # AKHD-545-35-K, which has the popular 5-on-4-1/2 wheel bolt pattern and that uses inner bearing L68149 and outer bearing L44649. Adding electric drum brake to a trailer requires...
    view full answer...
  • Recommended Brake Assemblies And Drums For 1990 Shorline Roller Trailer
    If you would like to add brakes to your Shoreline roller trailer, I recommend using the Electric Trailer Brake Assembly - 7" - Left Hand - 2,000 lbs, # AKEBRK-2L and the right side # AKEBRK-2R. Electric brakes will work fine on a boat trailer, we just recommend using dielectric grease # 11755 in your connections to keep moisture out. You will also want the Brake Mounting Hardware Kit for 7" and 10" Brake Assemblies # BIK-00. For your hub and drum assemblies, I recommend the Trailer...
    view full answer...

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Info for this part was:

Expert Research:
Mike L
Expert Research:
Michael H
Expert Research:
Jameson C
Video by:
Joshua S
Installed by:
Cole B
Installed by:
Brent H
Video Edited:
Chris R
Written by:
Mary E
Updated by:
Sarah W
Updated by:
Isabelle B

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