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etrailer Trailer Wiring Junction Box - 7 Terminal

etrailer Trailer Wiring Junction Box - 7 Terminal

Item # e99009
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etrailer Junction Box Accessories and Parts - E99009
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This trailer wiring junction box provides a fast, easy way to connect your trailer's wiring to either a 6-way or 7-way connector. Makes replacing your trailer's connector simple. Call 800-298-8924 to order etrailer accessories and parts part number e99009 or order online at etrailer.com. Free expert support on all etrailer products. Guaranteed Lowest Price and Fastest Shipping for etrailer Trailer Wiring Junction Box - 7 Terminal. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (11)
  • Q & A (3)
  • Videos (2)
  • Photos
  • Why etrailer?

etrailer Accessories and Parts - e99009

  • Wiring
  • Junction Box
  • etrailer

This trailer wiring junction box provides a fast, easy way to connect your trailer's wiring to either a 6-way or 7-way connector. Makes replacing your trailer's connector simple.


  • 7-Terminal junction box lets you easily connect your trailer wiring to a 6-way or 7-way trailer connector (sold separately)
    • Eases connector installation, and makes diagnostics simple
  • Weatherproof, heavy-duty plastic protects wires and terminals from the elements
  • Ring terminals included


  • Box dimensions with lid: 8-1/8" long x 3-3/8" wide x 2-3/8" tall
  • Lid size: 6-5/8" long x 3" wide
  • Distance between mounting holes (on center): 7-3/8"

e99009 etrailer Trailer Wiring Junction Box - 7-Way

Video of etrailer Trailer Wiring Junction Box - 7 Terminal

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

Video Transcript for etrailer Trailer Wiring Junction Box Review and Installation

Customer Reviews

etrailer Trailer Wiring Junction Box - 7 Terminal - e99009

Average Customer Rating:  4.8 out of 5 stars   (11 Customer Reviews)

This trailer wiring junction box provides a fast, easy way to connect your trailer's wiring to either a 6-way or 7-way connector. Makes replacing your trailer's connector simple.

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I found that this is a good link when a new or replacement plug with the optional heavy duty coiled harness is installed to be able to connect to the original wiring harness. It gives you the ability in the future to quickly diagnosis electrical issues that could arise. 902200

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Everything you need to relocate electrical splices from a crowded emergency break away battery box to separate junction box. Now adding accessories to the trailer is very easy. I highly recommend etrailer for any of my trailer needs 882526

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Love the junction box keeps things very organized 874415

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product arrive on time and was a breeze to install. Instructions were clear and all parts were present. I have ordered other parts from etrailer before and had the same great experience. Any parts I may need in the future for any of my trailers will be ordered from etrailer again. 829952

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Received this quicker than anticipated, very high quality and larger than expected. Plus, it came with spare parts, such as mounting screws, two types of rubber grommets (solid and pass through) and ring terminals for both sides of the junction box. Overall very pleased with the “cheapest” box I could find, so I’m glad I ordered two so I can rewire both my trailers. 787476

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Exactly what I needed to straighten out the mess that is the OEM wiring of STEALTH trailer 785645

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Packaged and sent to me quickly. Good p roducts 772670

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worked great 771043

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I have a 6 x 12 trailer with a flat 4 connector. I've had enough of fiddling with the flat 4 and poor connections. I decided to upgrade to an RV 7 wire plug and use this box to make a clean and protected installation for my lighting system. I'm very impressed with the quality of the box and the installation kit that comes with it. I will be installing it this weekend. 768406


Ask the Experts about this etrailer Accessories and Parts

  • How to Rewire Vintage Trailer with 7-Way Connector and Parts Needed
    Most of us aren't electricians, but that doesn't mean wiring a trailer is beyond us. It will take a little bit of time, but I wouldn't consider it a difficult DIY project by any means. So, to wire your 1977 Serro Scotty vintage camper, I recommend using the following parts: - Mighty Cord 7-Way RV-Style Trailer Connector # A10-7W6 (6 ft long) - this is a high quality molded trailer connector with corrosion resistant terminals. - etrailer Trailer Wiring Junction Box - 7 Terminal # e99009 ...
    view full answer...
  • Parts Needed to Power Interior Lights of Enclosed Trailer
    We can help you mount a 12 volt battery to power the interior lights You will need to start with a battery box to mount the batteries, and I recommend the TorkLift PowerArmor Locking Battery Box # TLA7712R or # TLA7708R. If those aren't the correct size for your batteries, I have added a link below to our entire selection of battery boxes for you as well. You will then tap into your 7-way with Trailer Wiring Junction Box # e99009 and run 12-gauge wire # 12-1-1 to your lights (the junction...
    view full answer...
  • Towing a Trailer with a 5-Way Connector with a Vehicle with a 6-Way Connector
    I recommend replacing the boat trailer's 5-way with a 6-way because there aren't any adapters between those two Cut the 5-way off as close to the connector as you can and install part # PK11604 onto the wires. It'll plug right in to your 6-way on your RV. If you sometimes tow the boat with a different vehicle and need to keep its 5-way then you can add a 6-way and have two connectors on it. Use a junction box like part # e99009 with part # H20036. You'll need to connect the 5-way...
    view full answer...

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Info for this part was:

Edited by:
Lindsey S
Installed by:
Kathleen M
Installed by:
David F
Video by:
Dustin K
Video by:
Jonathan Y
Video Edited:
Chris R
Updated by:
Sarah W
Test Fit:
Shane H
Written by:
Kristina F

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