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Plug and Lead

Epicord 7-Way Molded Trailer Plug - 8' Long

Epicord 7-Way Molded Trailer Plug - 8' Long

Item # 277-000143

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277-000143 - Plug and Lead Epicord Trailer Connectors
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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.
  • All Info
  • Reviews (46)
  • Q & A (15)
  • Videos (2)
  • Photos
  • Why etrailer?

Epicord Wiring - 277-000143

  • Trailer Connectors
  • Trailer End Connector
  • 7 Blade
  • Plug and Lead
  • Epicord
  • 8 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







Video of Epicord 7-Way Molded Trailer Plug - 8' Long


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




Video Transcript for Epicord Wiring - Trailer Connectors - 277-000143 Review

Today we're going to be taking a look at the Epicord 7-way molded trailer plug. The 7-way trailer and connector's going to let you replace a damaged wiring harness on your trailer. This is pre-wired to ease installation. It's going to measure eight feet long. It's a nice, heavy duty cord. It's going to have the trailer end, 7-way connector on one end and it's going to have the exposed wires on the other end.

It does feature a molded design, so it's going to protect the wires from corrosion and abrasion and we're going to have the easy grip finger tabs on the connector side. That's going to allow for easy connect and disconnect. It's going to feature a weather-proof and corrosion-resistant design. It is CETL and ETL US listed. Now when it comes to the wiring, we're going to have a couple different gauges. We're going to have two wires that are ten gauge, one wire that's twelve gauge, and then four wires that are fourteen gauge.

So the white wire and the black wire, these are going to be our ten gauge wiring. White wire's for ground, black wire's for twelve volt power. And then the blue wire is a twelve gauge. That's going to be for brake power. And then the other four, the red, green, yellow, and brown, that's all going to be fourteen gauge wiring.

So yellow is auxiliary, red is left turning brake, green is tail light, and then brown is right turning brake. That's going to do it for today's look at the Epicord 7-way molded trailer plug.


Customer Reviews

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

Average Customer Rating:  4.8 out of 5 stars   (46 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:

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:

Cable was just like advertised perfect. 595641



- 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:

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:

Exactly what description says and advertised very happy ordered it on a Sunday was shipped that day. Very impressed 424596



- 277-000143
by:

i had bought 2 of them and the other had free shipping for same product dont know why u didnt have it but still liked it 424743



- 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:

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



- 277-000143
by:

Product was as advertised 640009



- 277-000143
by:

This pig tail worked great, fit was excellent, durable and rugged construction. Still working great after a year of service 635149



- 277-000143
by:

Have not installed yet but appears to be a quality product 613343



- 277-000143
by:

Great coming with awesome products. Great prices and excellent customer service. Unfortunately 3 days after I wired in the 7 way pigtail I bought debre on the road rip the cord out of the truck and the asphalt ate the plug end at 75 mph 604974



- 277-000143
by:

I pinched my camper's original harness, cutting 3 of wires. This harness is a direct replacement. Works great. 599358



- 277-000143
by:

Wired up easily 595063



- 277-000143
by:

This trailer connector works great and installed easily 570937



- 277-000143
by:

This is a very well made trailer plug and it makes very consistent connections between the truck and the trailer. 564523



- 277-000143
by:

Fast shipping and looks to be just what I was needing. Thanks 547247



- 277-000143
by:

Product came very fast, will order aga in. 525982



- 277-000143
by:

The product that you delivered was exactly what I ordered and was received without any problems. Thank you for your great service and products 525909



- 277-000143
by:

Excellent cable exact replacement for the one i was replacing wire for wire 523020



- 277-000143
by:

Product worked great even if I later found the issue somewhere else. Lessons learned 522861



- 277-000143
by:

I'm a kid with a new toy. I can now replace my well used cable with a vey good one and eleminate the loose connection problem. Cable is well built, exactly what I ordered , well packaged and arrived in a timely manner. 515492



- 277-000143
by:

fast and fit like a glove...wish it said "made in America" though 510724



- 277-000143
by:

as described, fast shipping 478576


Comments

they worked perfect, we changed all or trailers to them, thanks

Frank - 02/25/2019

49854

- 277-000143
by:

Exactly what I need at a great price. I haven't installed the cord yet, but out of the box ti seems to meet or exceed the quality of the power cord I am replacing. 458819



- 277-000143
by:

PERFECT 453716



- 277-000143
by:

I'm lengthening the tongue on my boat trailer, so this is a longer replacement. They changed the connections to one with two sides that the spade will slide into. I hope this works as well as the last one. This rating may change. 448254



- 277-000143
by:

Good pricing arrived sooner than expected. Very satisfied .... 447885



- 277-000143
by:

As it has been in the past, it is always an excellent experience shopping through etrailer.com. Products shipment fast and exactly as expected, customer service and order follow up starts immediately after the order takes place. Returning to shop with etrailer is a no brainer! 414804


Comments

Great perfect fit, exactly what I needed after damaging OEM on a tight turn when it got pinched. ETRAILER is my no.1 place to go with fast shipping and accurate information. Thanks

Hector C - 08/04/2018

41896

- 277-000143
by:

The plug and harness replacement was a great replacement. I didn't have any problems with colors on wires all matched up good. 413951



- 277-000143
by:

Haven't installed yet, but it appears to be identical to the original, even to the gauge and color coding of the individual wires (that may be some kind of industry standard, don't know). 392966


Comments

Works fine, and was almost an exact match for the original. What else can I say?

Chuck J - 06/14/2018

39771

- 277-000143
by:

Perfect! Same as the one on my 07 Jayflight. Easy install. 389613



- 277-000143
by:

Looks great 370067



- 277-000143
by:

Good quality wire. Fast shipping 361562



- 277-000143
by:

I liked because it's stronger than I thought than Give me a more room to turn when back up 292589


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Ask the Experts about this Epicord Wiring

Do you have a question about this Wiring?


  • 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...

  • 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...

  • 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...

  • 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...

  • 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...

  • 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...

  • 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...

  • 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...

  • 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...

  • 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...

  • 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...


Do you have a question about this Wiring?




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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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