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Epicord 7-Way Molded Trailer Plug with Junction Box - 10' Long

Epicord 7-Way Molded Trailer Plug with Junction Box - 10' Long

Item # 277-000141
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277-000141 - Junction Box Epicord Wiring
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Call 800-298-8924 to order Epicord accessories and parts part number 277-000141 or order online at etrailer.com. Free expert support on all Epicord products. Guaranteed Lowest Price and Fastest Shipping for Epicord 7-Way Molded Trailer Plug with Junction Box - 10' Long. Accessories and Parts reviews from real customers.
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Epicord Accessories and Parts - 277-000141

  • Wiring
  • Junction Box
  • Epicord


  • Epicord 7-way molded trailer plug and 7-gang junction box
  • 10' Long heavy-duty cord
  • Wire gauge and function:
    • White (ground): 10 gauge
    • Black (12V power): 10 gauge
    • Yellow (reverse/auxiliary): 14 gauge
    • Red (left turn and stop): 14 gauge
    • Green (tail and running lights): 14 gauge
    • Brown (right turn and stop): 14 gauge
    • Blue (brake): 12 gauge
  • Weatherproof and corrosion resistant
  • Hardware included
  • cETL and ETLus Listing
  • Junction box dimensions: 8" long x 2-1/4" wide x 3-1/2" tall
  • 1-Year Warranty

Junction boxJunction box

RV078-10X Epicord 7-Way Molded Trailer Plug with Junction Box - 10' Long

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Video of Epicord 7-Way Molded Trailer Plug with Junction Box - 10' 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 - 277-000141 Review

Today we're going to be taking a look at the Epicord 7-Way Molded Trailer Plug with the included junction box. This is going to provide an easier way to get your trailer wired. It provides a 7-way connector for your trailer, that way you can easily get everything connected to the 7-way port on your tow vehicle. The 7-way trailer end connector is already connected to the correct locations within the box. All you have to do is run your trailer wiring inside the junction box, match it up with the correct functions and you're going to be ready to go. This is going to measure 10 feet long. It's a heavy duty cord so it's going to give you the length that you need and it's going to provide the protection to the wires that we're looking for.

It's going to feature a weatherproof and corrosion resistant design, which is going to help insure that this plug is going to last for years. Taking a look at the trailer end plug right here, that's going to connect to the tow vehicle. It's got the finger tabs, which allows for easy connecting and disconnecting, and it's got the tab here on top, we call that an alignment tab and that's going to align in the groove in the socket that would be on the 7-way connector on the vehicle. We're going to take a look inside the junction box real quick. It's got 2 screws here on top that holds the lid on to the bottom portion of the box. They'll be Phillips head screws, we can easily remove those. Then we'll point out some features about the box.

The lid easily comes off. Inside here, you can see that it's going to have the posts. I do want to mention that these posts are going to be color coded, they've got the tips colored. It's going to say the color coding on this side of the posts and on the bottom side it's actually going to label the functions. So right here, it's white, it says white on this side and on the underside it says ground.

So we know that the white wire connects to the white post and that's going to be the ground function. That's going to be our ground wire. Also, I want to point out that on the 2 ports right here to run wires through, we'll see that they've got the rubber plugs. I'll just go ahead and remove all of those so we can get a better look at it. It's going to have set screws located in here so that way, when you run the wiring through, you can tighten down those set screws and it's going to bring a clamp down over the wires which is going to help keep dirt and moisture and any other elements out of the box. It's going to come with solid plugs, that way whatever holes you're not using .. You've got 2 on this side and then 1 on each side of the box.

Whatever holes you aren't using, you can use those solid plugs to cover up. It's going to come with 4 plugs that have pre-cut holes in them already. That way you can run your wires through. That acts as a grommet so it still allows you to run the wires through, but it's going to keep out anything that could pass by the wires. Both of those are included, 4 of each. 4 solids, 4 with pre-cut holes. It seems like a really nice design. Again, weatherproof and corrosion resistant design. Hardware is included for each connection port inside the junction box. Your mounting hardware is sold separately. You can see here on the bottom of the box, we're going to have 2 mount hole locations, 1 on each side. If we take a measurement, the distance between those mount holes, that's going to give us a measurement of 7 and 3/8ths of an inch. The overall length from edge to edge, those mounting tabs, that looks to measure about 8 and 1/8th inches long. The width of the box, that's going to measure about 3 and 1/4 inches. Let's go ahead and put that lid back on and then we can go ahead and give you a measurement of the overall height as well. The diameter of those mount holes is going to measure 5/16ths of an inch. Again, mounting hardware is not included so that will need to be provided separately. We'll take a look at the overall height of the box, we can see that that's going to give us a measurement of about 2 and 1/4 inches. This is CETL and ETL US listed, which means that this product has been tested and meets the safety standards for use in Canada and for use in the United States. That's going to do it for today's look at the Epicord 7-Way Molded Trailer Plug with the included junction box.


Customer Reviews

Epicord 7-Way Molded Trailer Plug with Junction Box - 10' Long - 277-000141

Average Customer Rating:  4.7 out of 5 stars   (199 Customer Reviews)


- 277-000141
by:

Used this to allow a plug and play to hook up needed tail and brake/running lights on my LanceCamper. Spliced the female Lance plug into the provided junctions in the box. Worked great. No under the truck cutting into the wiring harness. 572944



- 277-000141
by:

Ordered this to replace the very poor factory wiring on my 18 foot car trailer. Very impressed with quality and with quick delivery of product. I would recommend measuring your trailer to make sure the 10 foot cord is not too long. I didn't measure first but I was lucky and was able to make it work. Only complaint is what many others have said about the wire color. I know wire color may vary based on manufacturer, but the standard wire color chart on this very website is different from the colors in this plug. It is not hard to figure out, mostly just annoying having to use a circuit tester to verify the wires or having the color chart pulled up. Overall great product, Just annoying about the wire color. 396368



- 277-000141
by:

works great 694164



- 277-000141
by:

I installed this product yesterday and it is a really nice product. It would be a great product if the darn wire colors from the plug were the same as the industry standard. But if you go by what is on the small mount that the wires screwed to it is accurate. I got the longer 10' cable as I wanted to mount it further back than the stock metal electrical box that they mount all the stuff in from the factory. I ended up mounting it on the bottom side of the cross braces on the bottom side of the trailer. I also installed a seperate fuse box to individually fuse all the circuits so that if anything on the trailer shorted out it wouldn't blow the fuses in the truck. 318401


Comments
I loved that I got the longer replacement so I was able to move it to a more easier place to access.
Dakar D - 11/20/2017

31101

- 277-000141
by:

I bought this to replace the cord on my 5th wheel. The original one is OK, but the plug doesn't lock into the new receptacle I installed in the truck bed. This new plug is molded to the cord, and has dual contacts (better electrical connection) and the lug is of the proper dimension to hold it securely in the receptacle. The construction of the terminal box is satisfactory, the wire sizes are adequate, and the cord jacket appears to be thicker than most. The cord is flexible. 412723



- 277-000141
by:

Epicord 7-Way Molded Trailer Plug with Junction Box. I have purchased many items from etrailer and this product is another example of the quality products they represent. 281557


Comments
Remains water tight and took a unsightly wiring mess and organized it. should have purchased sooner
edgewater - 08/13/2017

27126

- 277-000141
by:

Order was complete and delivered in a timely manner. Only problem (minor) was the 7way pigtail was not wired to color code. Had to use test light to get 3 of the wires in correct location. Could be a problem if someone wasn't comfortable with ringing out wires. 375359



- 277-000141
by:

Little over a year since install and no problem thus far with this product. The rubber grommets supplied with it keeps everything water tight. Wires are not colored coordinated! I overlooked that detail in product description and had to rewire everything, lol. 658499


Comments
Actually, theres more than one accepted wire color convention when it comes to trailer wiring color codes which is why we list the function for each terminal/wire color in the product description.
-- Mike L - 06/18/2019

56799

- 277-000141
by:

all colors matched trailer wiring... I soldered all connectors... there's and mine.. good to go. better then the Factory butt connectors.. 402094



- 277-000141
by:

It couldn't be simpler and the look of it is clean! I will say this though, pay attention to the wiring diagram for this, it is not a standard trailer wiring scheme, and until I emailed in and they sent me another diagram I was lost. Once I got straightened out though, my trialer is awesome. Super easy to install and wire. Also the adapter end that hooks up to your car is well made and very durable. 570906



- 277-000141
by:

Great concept, only it came wired incorrectly in the junction box. Got it all wired to the trailer only to find out it was wired wrong. Then had to ohm out all of the pins in the connector to the studs in the box. Really dissappointing. 597069


Comments
There is more than one accepted wiring convention for a 7-way trailer connector, which is why we specifically state which wire color carries which circuit in the product description above.
-- Mike L - 01/14/2019

48546

- 277-000141
by:

This makes everything easier, particularly when a breakaway is also added to the system. All connections-- brake control wires, lighting wires, breakaway wiring, breakaway battery wiring-- is connected here. I used it on a small 5x10 covered utility trailer, and the cord was way too long. I could have shortened it, but I chose the easier route of wrapping the excess in a big loop and tying to the A-frame. 566060



- 277-000141
by:

This product is great!! It is probably overkill for my little utility trailer but I was tired of re-wiring it for shorts in the crappy standard wire that came with the light sets. This junction box feels very sturdy and has the cable/plug is very hefty as well. Easy to setup. The colors didn't match what my car was but it is very simple to swap the terminals to what you need. I forgot to take more pictures through out my install. 345179



- 277-000141
by:

Works great ! 565844



- 277-000141
by:

Used this to convert a trailer from 4 pin to 7 blade connector so that I could add brakes. Gives a nice place to terminate your wires. The wire color guide on the product page was very helpful when it came to wiring up the trailer. Plan on putting some type of sealant around the wires because unless you use a large 7 conductor wire there will be a gap where water could get in. 423934



- 277-000141
by:

Nice quality item, too bad the pin configuration on the plug had all the wires connected incorrectly at the box. What should have been simple "follow the colors" wiring, ended up blowing fuses in my Tahoe and causing me to have to "pin out" the cable and rewire the box entirely. What a nightmare! 572006


Comments
There are many accepted trailer wiring color codes. For this reason we recommend testing the wiring by function with a circuit tester such as part # 40376.
-- Heather A - 10/06/2018

44365

- 277-000141
by:

This is a great part It made wiring in the trailer very easy. It fit underneath the gooseneck and mounted up real nice. I recommend it to anyone that needs to rewire their trailer. 353210



- 277-000141
by:

Everything worked great. All parts were correct. Very happy with the service. 904417



- 277-000141
by: 09/24/2020

Great product. Easy to install. Glad I bought it! 891722



- 277-000141
by:

Everything looks great, I received items quickly 887444



- 277-000141
by: 09/18/2020

Great product! 882820



- 277-000141
by: 09/07/2020

well designed with molded ends no issues and works great 875572



- 277-000141
by: 09/01/2020

Great product! Made very well and is just as described. 872398



- 277-000141
by:

I would like to thank the team at etrailer for the great customer service we received on all of the products we ordered, the staff was so knowledgeable about all of the products, when I wasn't sure about something, they clarified all of the questions I had, and not rushing me off the phone. All of the products we ordered are the best in quality, we wouldn't put anything less on our campers. Turtledrop Trailers is looking forward to a long business relationship with our new partner, thanks again James and etrailer 866870



- 277-000141
by:

I absolutely love this product inhave got one for all mtmy trailers. Make rewiring a trailer a snap. Keeps everything nice and neat. 864959


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Ask the Experts about this Epicord Accessories and Parts

  • Lance Camper Wiring Harness Recommendation
    There is not a plug and play adapter for your Lance connector that we are aware of. Typically this is installed by the Lance dealer. A junction box/7-way plug kit like Epicord # 277-000141 or # e99011 is another option you have to convert the camper to match the 7-way RV blade type connector format. This avoids the extra connection points and potential trouble spots from using separate adapters. These items use different wire colors so be sure to follow the wiring guide for the specific...
    view full answer...
  • How to Wire New 7 Way Trailer Connector With Junction Box
    Long story short, you can wire your brakes and 12v auxiliary charge line into the junction box on the Epicord 7 Way # 277-000141 and continue to use the 4 way connector. With that being said, there is a much cleaner and more practical way to do this. You can start by cutting off the 4 way connector on your trailer and then wiring those wires into the junction box on the Epicord. Once you've wired those in, you'll run the brake wires from your trailer brakes into the junction box, as...
    view full answer...
  • Replacement Trailer Connector For a 2004 Lance Truck Bed Camper Model 845
    The 2004 Lance Truck Bed Camper Model 845 most likely uses a 7-way trailer connector because there will be circuits needed for the lights and battery charge line. If you need to replace this then you can use the Epicord 7-Way Molded Trailer Plug with Junction Box part # 277-000141 that you referenced. If you need an in-bed 7-way for your 2011 Chevrolet Silverado to plug this into you can use the Mighty Cord 5th Wheel/Gooseneck Wiring Harness part # A10-7007.
    view full answer...
  • Can I Use My 7-Way Truck Wiring To Wire My Lance Camper Harness To My 2018 Ram 3500
    I found the owner's manual for your 2019 Lance 850 and it does recommend to use 8 gauge wire with their proprietary connector. Using the 8 gauge wire from truck battery to the camper ensures you have adequate amperage to the accessories in your camper. Since the vehicle's current wiring for the 7-way is not 8 gauge wire I do not recommend splicing into that wiring to install the camper's plug onto the vehicle. I recommend wiring the Lance vehicle plug into the truck separately or take...
    view full answer...
  • Recommended 7-Way Connector for Tandem Axle Trailer with Electric Brakes
    The 7-Way wiring that I recommend adding to your tandem axle trailer to match up with your 2014 Toyota Tundra is the Epicord 7-Way Molded Trailer Plug with Junction Box # 277-000141. Junction boxes are a great way to keep your trailer wiring organized and easy to access where the wiring connects to the 7-Way connector. The different terminals are labeled inside this junction box so you just need ring terminals like part # 44-5310A to connect your trailer wiring to your pickup. If you...
    view full answer...
  • Wire Functions of Epicord 7-Way Molded Trailer Plug with Junction Box
    Though there is not a diagram available I will list for you the functions of the wires in the junction box of the Epicord # 277-000141. White = Ground Black = 12V power Yellow = Reverse or Auxiliary Red = Left turn and Stop Green = Tail and Running Lights Brown = Right Turn and Stop Blue = Brake
    view full answer...
  • Adapter and Re-Wiring Kit for Lance Truck Camper with Round Pin 7-Way Plug
    A junction box/7-way plug kit like Epicord # 277-000141 or # e99011 lets you convert the camper to match the 7-way RV blade type connector format. This avoids the extra connection points and potential trouble spots from using separate adapters. These items use different wire colors so be sure to follow the wiring guide for the specific kit you select. The existing wires on the camper will need ring terminals like # 44-5310A (for 12 and 10 gauge wires) and # DW05702-1 (for 16 and 14 gauge...
    view full answer...
  • Recommendation for Rewiring Trailer to be Compatible with a 7-Way Trailer Connection
    For your rewiring, I recommend the Bonded 4 Wire - per foot # 16-4B-1. Then use the # 10-2-1 for your trailer brakes. To connect this, I recommend the Epicord 7-Way Molded Trailer Plug with Junction Box - 10' Long # 277-000141. This will give you a clean connection location and a nice molded cord. You will also use: Ring Terminal - 12-10 Gauge Wire - 3/16" Ring ID # 44-5310A Deka Heat Shrink Butt Connector - 16-14 Gauge - Blue - Qty 10 # DW05744-10 Deka Heat Shrink Butt Connector...
    view full answer...
  • Wire Gauge Sizes in Epicord 7-Way Molded Trailer Plug with Junction Box
    The wire gauges in the Epicord 7-Way Molded Trailer Plug with Junction Box # 277-000141 are as follows: White = 10 Black = 10 Yellow = 14 Green = 14 Red = 14 Brown = 14 Blue = 12 The wire gauge in the Epicord # 277-000141 changes with different functions of the wires. Signal wires, like yellow, green, red, and brown, draw less amperage so they use a lighter gauge wire. Heavier gauge wire is used for functions like the brake signal, ground, and 12V power because they carry...
    view full answer...
  • Parts Needed to Operate Electric Brakes on Roadmaster Tow Dolly to Tow a 2014 Fiat 500L
    It sounds like you're trying to power the lights and brakes on the Roadmaster RM3477 tow dolly. To do this you will not want to connect the dolly to the Fiat that's being towed but rather to the RV that's towing it. I assume the RM3477 has a 4-way connector on it because Roadmaster dollies often do. Even though they need a 7-way to power the brakes. What you'll need is a 7-way trailer connector like # 277-000141. This has a junction box attached to it which will make it easier to...
    view full answer...
  • What is Yellow Post of Epicord Junction Box and 12 Volt Accessory Circuit Used For
    The yellow pin of the part # 277-000141 that you referenced is normally used for the reverse light circuit. This is typically used for reverse lights on the trailer or for a reverse lockout solenoid for if the trailer has surge brakes. The 12 volt accessory circuit (black) can be used for a variety of things. Most common is a breakaway battery charge circuit or interior/exterior lighting. I attached a review video for you to check out as well.
    view full answer...
  • Replacing Molded 7-Way, Junction Box, and Breakaway Kit on Trailer
    If you have a 7-Way and junction box setup on your the trailer your easiest route will be to just replace the junction box with something like the Epicord 7-Way # 277-000141. This harness features a 7-Way molded plug and pre-wired junction box with terminals so that you can simply make connections to what remains of your trailer wiring after removing the connector. I have attached an installation video so you can see exactly how everything hooks up. The wire color/functions for the...
    view full answer...
  • How to Connect Brake Wiring to a 2000 Jayco Eagle That Has a 6-Way Connector Installed
    Since, you do not have the 7-Way RV trailer connection that the majority of trailers with brakes use, I recommend using Epicord 7-Way Molded Trailer Plug with Junction Box - 10' Long, 277-000141. This product will allow you to wire all of your trailer's lighting functions and the newly installed brake wiring into a junction box. The box has a 10 foot trailer connection with a 7-way plug. The 7-way plug will allow you connect your trailer's lighting and brake wiring to your vehicle's...
    view full answer...
  • Ring Terminal Sizes Needed for Installing Epicord 7-Way Plug with Junction Box 277-000141
    The terminal posts in the Epicord 7-Way Molded Trailer Plug with Junction Box # 277-000141 are indeed a 3/16-inch diameter. You can use ring terminal # 44-5310A for connecting 10- and 12-gauge wires. For the lighter 14-gauge wiring use part # DW05702-1. You'll need a crimping tool like the one included in our Deluxe Trailer Wiring Kit # HM51020. I also recommend using dielectric grease # 11755 on those connections to protect them from moisture and corrosion.
    view full answer...
  • Troubleshooting 7-Way Trailer Wiring with Colors That Don't Match Functions
    Wiring by function is the route to go for your situation. This is done by testing each wire of your trailer individually. The easiest way is to use a 12V battery and connect the negative terminal to the trailer's ground on the frame and then use the positive terminal with a jump wire to connect to each individual wire. One wire in your 7-way will be the ground wire. You will want to find this one first because it will cause a spark if you connect the battery to it. You can trace...
    view full answer...
  • Recommendations for 7-Way Wiring Replacement on Gooseneck Trailer
    I've attached an article to help you with the wiring functions and common colors as well as pin placement. I've also attached some videos to assist with installation. For a long term solution, I recommend the Epicord 7-Way Molded Trailer Plug with Junction Box - 10' Long # 277-000141 and # 44-5310A ring terminals. This will make connections and trouble shooting easy as well as gives you the weather protection of having a wiring box versus heat shrink butt connectors. If you prefer...
    view full answer...
  • Adding a Battery to a Trailer with a 4-Way Connector
    To run a charge line to your battery you will first need to install a 7-Way on your trailer. This can be done using the Epicord 7-Way Molded Trailer Plug with Junction Box # 277-000141. The Black wire in the junction box is the one that will carry the 12V power. Just simply use a ring terminal like part # 44-5310A and run 10 Gauge Wire # 10-1-1 to the positive terminal on your battery. The 4 wires that are currently on your trailer and tow vehicle are only for the lights and are not...
    view full answer...
  • How Can I Connect Brakes On 1998 Rockwood Pop-Up Camper
    For the brakes on your 1998 Rockwood popup trailer you can check out the attached helpful article that goes into detail explain what is needed to add electric brakes to a trailer. You will need to make sure you have the correct wiring on your trailer to be able to get the signal for the brakes. If you do not have a 7-way connector on your trailer or you do not have the wiring for brakes on the trailer I recommend part # 277-000141. This is a 7-way trailer side harness and a junction box....
    view full answer...
  • Recommended 7-Way Wiring Harness For 2000 Sundowner Horse Trailer And 2013 GMC Sierra 3500 Dually
    For your application, I can absolutely give you the wiring function locations. I've attached a picture to assist. Based on what you mentioned, I think I have a better option for you. I recommend the Epicord 7-Way Molded Trailer Plug with Junction Box - 10' Long # 277-000141. This will allow you to connect your wiring at a junction box using the ring terminals like # 44-5310A, and then uses a molded plug so you won't have the disconnection issues as you plug and unplug your 2000 Sundowner...
    view full answer...
  • What is Needed to Tow a M105A2 Military Trailer with a 2013 Dodge Durango
    To convert your M105A2 military trailer to a 7-blade, I would recommend using the Epicord 7-Way with Junction Box # 277-000141. This makes the conversion simple and you don't have to worry about wiring the connector itself. You'll also need some ring terminals like # 44-5310A and some loom clamps like # A0500. The wires in the junction box are color coded as indicated below. Military wiring is typically not color-coded, so you may need to use a circuit tester like # 40376 and a 12V power...
    view full answer...
  • Troubleshooting Failing Brakes on Trailer Being Towed by a 2017 GMC Sierra 1500
    If the issue occurs only when there is metal-to-metal contact between your 2017 GMC Sierra 1500 and the trailer then it is definitely a ground issue. Since you have a GM shop check out your truck I would venture to say that your trailer is the issue. Start off by checking the 7-Way connector on your trailer and making sure that it is clean and free of corrosion. If that looks good move on to the ground connections on your trailer. Since the issue is with your brakes check your main ground...
    view full answer...
  • Axle Options for Converting Military Surplus Trailer to Electric Drum Brakes
    Military surplus trailers differ enough from RVs that it is often easier to just replace the original axle with a new one that comes with electric brakes, like 7K-rated # 8327834-EB. This 95-inch axle kit includes the axle beam, brakes, hubs, drums, bearings, races, seals, and mounting hardware. It will also make finding compatible wheels and tires easier well into the future. We also offer the Timbren universal-fit axle-less trailer suspension kits, such as the 3500-lb version # A35RS545E,...
    view full answer...
  • Recommended Wiring for Clearance Lights on Homemade 16 Foot Car Hauler Trailer
    Depending on the size of your trailer there are some requirements for lighting. I've attached an article to assist. When wiring a trailer, I do like the option of including a junction box. I personally really like the Epicord 7-Way Molded Trailer Plug with Junction Box - 10' Long # 277-000141. This will allow you to use ring terminals # 44-5310A to make your connections. For clearance lights, you want to splice into the running light circuit (normally the brown wire) on your trailer....
    view full answer...
  • How to Convert M105A2 Cargo Trailer from Air-Over-Hydraulic Brakes to EOH or Electric Drums
    You can use your Parkhurst M105A2 military cargo trailer with your Silverado by converting its air-over-hydraulic (AOH) braking system to either electric-over-hydraulic (EOH) or electric drum brakes. Both options would allow the trailer brake controller in your Silverado to activate the trailer's brakes. The simpler and lower cost option is electric drum brakes since these require no hydraulic lines, just fairly simple electrical wiring and installation of a junction box like # 277-000141. You...
    view full answer...
  • Turn Signals Do Not Work With Epicord 7-Way Molded Trailer Plug with Junction Box
    You do make sense but there is not a diagram showing the blade functions of the Epicord 7-Way Molded Trailer Plug with Junction Box # 277-000141 because it shows the wire colors by function. So the intention is to make it simple by showing you what wires on your trailer you need to connect to the junction box. While I do understand you thinking it may be the plug not matching up, that's highly unlikely. I know you said you checked your grounds but do the turn signal lights ground via...
    view full answer...
  • Recommended Wiring To Connect A 7-Way Trailer To A Vehicle 4-Way Connection
    We don't carry any 7 way flat adapters or specific 4 way vehicle to 7 way trailer adapter. My recommendation is to transition your trailer to a 7 Way Standard using the Epicord 7-Way Molded Trailer Plug with Junction Box - 10' Long # 277-000141 and ring terminals # 44-5310A. Then you can use an adapter like # 30717. If you are going to be regularly pulling a trailer with brakes, I recommend upgrading your vehicle system with the # ETBC7 and a brake controller like # 90195.
    view full answer...
  • Wiring Needed to Rewire a Trailer for Lights and Electric Brakes
    Both the # A40W5B and # W002290 have a blue wire that is only 5 feet long. Plus, the blue wire is only 18 gauge and 20 gauge, respectively. So these are not going to work for your application. What you're going to want to use is Bonded 4 Wire # 16-4B-1 which is sold by the foot. This will provide the four 16 gauge wires to run from the junction box, part # 277-000141, to your trailer's lights. Then for the brakes you will want a 10 gauge wire, # 10-1-1, which is also sold by the...
    view full answer...
  • Wiring Diagram for Home Made Trailer
    I've linked an article on trailer wiring that includes a diagram you might find helpful. One solution to help wire everything together is to use a junction box with your trailer's 7-way connector, like # 277-000141. This way you can run all of your trailer's wires to the box instead of to the back of the connector. To wire you brakes you'll want to use 10 gauge wiring # 10-1-1. For the lights you can use 16 gauge, # 16-1-1. Both are sold by the foot. When looking into the back...
    view full answer...

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