1. Accessories and Parts
  2. Buyers Products
  3. Wiring
  4. Junction Box
Trailer Wiring Junction Box - 7 Terminals - Polypropylene

Trailer Wiring Junction Box - 7 Terminals - Polypropylene

Item # 3375601100
lowest price pledge
Retail:$23.20
Our Price: $10.46
You Save: 55%
Accessories and Parts
Orders above $99 qualify for Free Shipping
Shipping Weight: 0.87 lbs
Quantity: 
In Stock
Trailer Wiring Junction Box - 7 Terminals - Polypropylene Junction Box 3375601100
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Customer Photos

Durable polypropylene box creates a fast, easy way to connect the wires from the trailer connector to the wiring for either a 6-way or 7-way connector. Makes replacing your trailer's connector simple. Call 800-298-8924 to order Buyers Products accessories and parts part number 3375601100 or order online at etrailer.com. Free expert support on all Buyers Products products. Guaranteed Lowest Price and Fastest Shipping for Trailer Wiring Junction Box - 7 Terminals - Polypropylene. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (45)
  • Q & A (7)
  • Videos (2)
  • Photos
  • Why etrailer?

Buyers Products Accessories and Parts - 3375601100

  • Wiring
  • Junction Box
  • Buyers Products

Durable polypropylene box creates a fast, easy way to connect the wires from the trailer connector to the wiring for either a 6-way or 7-way connector. Makes replacing your trailer's connector simple.


  • Electrical junction box consolidates your truck's wiring
  • Polypropylene construction
  • Number of terminals: 7
  • 1-Year warranty

5601100 Buyers Products Electrical Junction Box - 7 Terminals - Polypropylene





Video of Trailer Wiring Junction Box - 7 Terminals - Polypropylene

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




Video Transcript for Buyers Products Wiring 3375601100 Review

Speaker 1: Today we're taking look at a trailer wiring junction box. This is a durable polypropylene box that creates a fast, easy way to connect the wires from the trailer connector to the trailer wiring for either a six-way or a seven-way connector. It also makes replacing your trailer's connector simple, if and when needed.The electrical junction box consolidates all the wiring connections on your trailer. It mounts to a secure area on the trailer frame. Number of terminals that this one has is seven. Comes with a flat washer and nut for each post.Basically the way that you would connect your wires to the post is you would take the wire from the trailer plug, strip it back a little bit, put a ring terminal on it.

And then take the corresponding wire on the trailer, put a ring terminal on it and connect to the same post. And you'd do that for each function.It comes with the hardware kit. So in this bag is the hardware to secure the lid to the box. Also there is strain relief brackets and screws. And it has the rubber plugs.

So you have one, two, three, four, five different access areas for your wiring to feed into. Now some people, what they like to do is remove the plug completely and just have the area for the wiring to be able to pass through into the box. What I recommend doing to keep the elements out - dirt, grime, and moisture - is just to cut an area in the plug itself for the wiring to pass through.And then it has your strain relief brackets and the actual mounting areas for the strain relief brackets. What that does is that puts tension on the wiring that's passing through and reduces any type of stress or strain placed on the actual wiring. So it's nice that those are already included.We'll go over the measurements real quick.

So taking a look at the overall measurements, going edge to edge, mounting area to mounting area. This direction measures about 8 and 1/2 inches. Side to side, going this direction, is about 3 and 5/8 inches. The overall height is about 2 and 1/2 inches. The mount holes on the unit, these mounting tabs right here, these are separated on center by seven and 13/16 inches.That's going to do it for today's look at the trailer wiring junction box..


Customer Reviews

Trailer Wiring Junction Box - 7 Terminals - Polypropylene - 3375601100

Average Customer Rating:  4.7 out of 5 stars   (44 Customer Reviews)

Durable polypropylene box creates a fast, easy way to connect the wires from the trailer connector to the wiring for either a 6-way or 7-way connector. Makes replacing your trailer's connector simple.

- 3375601100
by:

Just what I was looking for, needed to rewire my Army truck tail lights and this box fits a treat. and is the size that I can hide from the rivet counters. Thanks again and other items I have had from you in the past. 643411


Comments
Still working great!!need one for a new build coming up. Thanks E Trailer.
John G - 05/19/2020

76965

- 3375601100
by:

Nice junction box. Used this as a junction/access point for my ‘18 Equinox flat tow setup. It houses my 5way conductors for tail lights, the Roadmaster battery charge line circuit breaker and fuse lead to my accessory +12v port that I’ll plug my Brake system into. Also added a cut off toggle switch on the charge line when not in use. 764663



- 3375601100
by:

I have used these before and they are great for a trailer wiring project. However, you must be careful when mounting to ensure that you do not crack the housing. If the mounting surface is not perfectly flat and/or the mounting tabs flex it will crack. i mounted two on my trailer and one cracked the other did not. A little silicone will seal it up! 692400



- 3375601100
by:

Awesome piece of equipment!! EXACTLY what I was needing!! Replaced the old torn up box and this box worked perfect!! Fast shipping and great communication, as usual!! Thank you etrailer!! 658136


Comments
One year later and the box is still holding up strong! Great product!
BrianB - 06/17/2020

81231

- 3375601100
by:

Great way to re-wire a trailer. The box is large enough that I was able to bring individual wires for each side marker and tail light into the box so that their would not be any splices outside of the box. 902045



- 3375601100
by:

The Junction Box has worked out very well for me. Taping the color code strip in the box is a big help in keeping everything organized and easy to troubleshoot later. 877073



- 3375601100
by: 09/09/2020

876419



- 3375601100
by: 08/21/2020

No issues with this box. Makes it convenient when adding several plugs on a trailer. 866289



- 3375601100
by:

Perfect! Works like a champ, for years I've used plastic conduit and electrical tape, it never holds up and looks bad. This junction box made my trailer rebuilt project look professional! 850643



- 3375601100
by:

Product is fine, the real news is the customer service. Hally is exceptional! I run two businesses and if i had a few Hally's I would have no worries about anything! Great work! 836887



- 3375601100
by:

Just got in my travel trailer today. Good sturdy box with plenty of room for all wiring. 829542



- 3375601100
by:

Perfect for minimal wiring. Used these for my trailer brakes, one one each side. Works fine, been to the salt flats several times and the brakes still work. =) 820820



- 3375601100
by:

Heavy built & perfect for what we needed. Just the junction box--no wiring or plugs. Arrived quickly! 800863



- 3375601100
by:

The quality was good. My only complaint was a combination of metric and sae hardware. The nuts on the terminals were 3/8". The cover lag bolts were 10mm. Other than that, I have no complaint. 799008



- 3375601100
by:

My trailer's stock surge brakes worked pretty well but dragged the brakes driving down hills, did not work while backing down boat ramps, and provided no backup if my vehicle brakes failed... So I got this EOH system to solve those problems. I only test-drove the finished upgrade once but it seemed to work fine. Note that in my 2018 Ram 1500 with integrated trailer brake control, I needed to set this up as "EOH heavy" even though my boat + trailer are under 6000 lbs. I wanted a solid, clean install, so I had a bracket made and welded to the trailer out of harm's way and above the possible high water level, even though it's all theoretically waterproof. Other considerations: - I was able to re-route the stock steel brake line right to the brake unit. - I had to buy a new 7 pin trailer harness to replace the stock 5 pin one. I made a conversion harness to go from the new wiring to the stock trailer wiring. - I locked out the original surge system by replacing its guts (master cylinder, spring, etc) with a steel bar that goes between the front and rear pins. - I hid the breakaway switch inside the tongue and ran the new breakaway cable where the original one went. - I safety-wired the brake reservoir cap to prevent its loss or vandalism. It just didn't seem secure to me. Easy fix! I think it looks good and seems to work well. I expect it will last many years. I gave it only 4 stars as the brakes have some lag (1/2 second?) before I can feel them working. I was led to believe the brakes would be instantaneous and I "would not feel the trailer" (possibly like the electric brakes on my other trailers) but it's not quite that perfect. But maybe I'm being picky! I'd choose this very system again. 801558



- 3375601100
by:

Looks like it is well made and the color coding matches with the current color coding on the lights unlike one I bough from another dealer 797658



- 3375601100
by:

Fast shipping 790567



- 3375601100
by:

Product as ordered arrived as detailed!! 777618



- 3375601100
by:

Received product on time. Product appears to be of good quality. 776805



- 3375601100
by:

Carol C. Really fast shipping, good looking products, exactly what I wanted. I haven't installed anything yet, kinda waiting for the weather to cooperate. When I get the job finished I'll send more review information and may-be pictures. It was a pleasurable experience doing business with you and I'm sure I will again. 776710



- 3375601100
by:

Quick shipping. Great Product. Nuff sai d. 773646



- 3375601100
by:

Great job Thanks 771461



- 3375601100
by:

Product great, great customer service 770775



- 3375601100
by:

Had plenty of room for the wire. 769796



- 3375601100
by:

We use this wire for multiple applications and works great at a very low cost. 770105


27
47
Show More Reviews

Ask the Experts about this Buyers Products Accessories and Parts

  • Junction Box Terminal Post Size for Part # 3375601100
    The ring terminals you want to use with the junction # 3375601100 are the # 44-5310A which have an inner diameter of 3/16 of an inch.
    view full answer...
  • Battery Disconnect Switch for Use on Travel Trailer
    You can use the Marine Battery Switch # 277-000403 for your application but since this item is not rated for outdoor use I recommend using a junction box like # 3375601100 to provide a degree of protection from moisture. The switch housing (not including the knob) is about 1-1/4-inches deep so you'd want to use hardware that is about 2-inches long. If space is available in your battery box you might be able to mount the switch there. In this case a better choice might be the Epicord...
    view full answer...
  • Ways to Install New 4-Pole Trailer Connector
    Four flat trailer wiring, also called 4-pole wiring, uses four wires and pins configured as shown in the linked photo of a trailer side 4-pole connector. The one pin that is different from the other three (on both trailer and vehicle side connectors) will be the ground pin and this usually has a WHITE wire that will ground to a clean bare metal spot the trailer frame with a ring terminal. The next pin is for the running light circuit and this typically uses a brown wire to activate...
    view full answer...
  • Replacement 4-Pole Trailer Connector for Utility Trailer with 5-Wire Wishbone Wiring Setup
    When a 4-pole (4-pin) flat trailer connector actually has 5 wires this simply means it is a 'wishbone' style connector with dual running light wires. These dual wires just make it easier to connect to the running lights on both sides of the trailer. Examples of such items are # A35W42B, # A20WB and # A10-4225VP. If your trailer wiring is still okay and you just need a new 4-pole plug to re-connect the leads from the trailer you can use Hopkins Endurance Quick-Fix Replacement 4-Way Flat...
    view full answer...
  • 7 Way Connection with Junction Box With Traditional Wiring Scheme vs RV Wiring Scheme
    I have a solution for you, but we aren't going to have any 7 way connections and junction boxes that are wired with the same color wires/pin locations as the traditional wiring setups you're looking for. I recommend using the 7 way connector # 54-77-003 and hard wiring your plug the way you want it setup. You can get wire by the foot (12 gauge) # 12-1-1 or (10 gauge) # 10-1-1 and a Trailer Wiring Junction Box # 3375601100 to finish off this project. This will allow you to use the proper...
    view full answer...
  • Parts Needed to Switch From Hydraulic Trailer Brakes to Electric
    As long as your existing brake assemblies are 10" x 2-1/4" and your axles are 3500-lbs capacity you can replace them with the Electric Trailer Brake Kit 10" # AKEBRK-35 - these will work with the 4 bolt mounting flanges you currently have. Since these are manually adjusting brakes, you'll need a brake adjusting spoon # W80630 to adjust these brakes after they're installed. Also, since they do not come with any mounting hardware you'll need Mounting Hardware Kit # BRKH10B. Because you're...
    view full answer...
  • Creating 7-Way Trailer Connection Adaptor for 13-Way European Bike Rack Lighing
    We do not have any European 13 way adapters to make your bike rack lights compatible so you will need to rewire it. So you would need to create a custom adapter using a 7-way connector and probably a junction box to protect an external converter box that you will need to separate the stop light from the turn signal for your 13 way bike rack wiring. For this conversion, I recommend the Vehicle to Vehicle Tail Light Converter # 118158 along with the Wesbar Adapter - 7-Way RV to 4-Way or...
    view full answer...

Do you have a question about this Accessories and Part?




  • Why etrailer.com?

    At etrailer.com we guarantee:
  • Highest quality accessories and parts for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate accessories and part information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Expert Research:
Jameson C
Installed by:
Cole B
Installed by:
Shane H
Video Edited:
Chris R
Edited by:
Daron K
Written by:
Brian T
Video by:
Jacob H

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.