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etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector
etrailer

etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector

Part Number: e99011
In Stock
$56.09
Trailer Wiring
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This kit includes a junction box so you can quickly and easily connect the wires from the included trailer connector to your trailer's wiring. Great Prices for the best trailer wiring from etrailer. etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector part number e99011 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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etrailer Trailer Wiring - e99011

  • Trailer Connectors
  • Trailer End Connector
  • Plug and Lead
  • 7 Blade
  • etrailer

This kit includes a junction box so you can quickly and easily connect the wires from the included trailer connector to your trailer's wiring.


Features:

  • Kit allows you to upgrade from a 4-way, 5-way, or 6-way connector to a 7-way connector
  • Pre-wired, 7-way, blade-style, trailer-end connector lets you connect your trailer to your vehicle
    • Flexible cable allows for easy positioning
  • Weatherproof, heavy-duty plastic junction box protects wires and terminals from the elements
  • Wire functions:
    • Black: 12 volt power
    • Yellow: auxiliary or reverse signal
    • Red: left brake and turn signal
    • Green: running lights
    • Brown: right brake and turn signal
    • Blue: trailer brakes
  • Ring terminals included


Specs:

  • Overall box dimensions: 8-1/8" long x 3-3/8" wide x 2-5/16" tall
    • Distance between mounting holes (on center): 7-3/8"
  • Lid dimensions: 6-5/8" long x 3-3/8" wide
  • Cord dimensions (not including junction box): 5'-5" long x 5/8" diameter
  • Overall length including junction box: 6'


Dimensional Diagam



e99011 etrailer Trailer Wiring Junction Box with Plug - 7-Way




California residents: click here


Customer Satisfaction Score:

Ratings & Reviews

4.7

364 reviews
This kit includes a junction box so you can quickly and easily connect the wires from the included trailer connector to your trailer's wiring.

by:

My wire colors did not match. Old plug did. The correct light function I had to use trail and error.



by:

This item was shipped in the same box as a 12K jack. The junction box was destroyed. After calling etrailer, they promptly shipped out a new junction box so I could finish wiring my trailer.



by:

This 7-way upgrade kit with junction box came a mere 2 days after I ordered it, which is great. The entire connector set came nicely assembled and it has everything I need to easily connect it in place of my damaged 7-way cord & connector. This upgrade will assure easy replacement should I squish my cord with my tailgate again. All I will need to do is solder the provided connectors to my existing wire set and get 2 bolts to bolt the box to the 5th wheel hitch. This kit is very robust and is even better than I expected.



by:

A quality made item. The description was not clear to me. I misunderstood the RV Connector therfore I couldn't use the item



by:

The etrailer web site is so easy to navigate and ordering is super easy. The delivery is really fast.



by:

Product is great easy installation. Would recommend to anyone.



by:

Over-all it seems good. I was missing one nut on one electrical connector and the plastic seems a bit cheap. I will wait to see if it holds up over time.



by:

Very nice junction box. I like all the options included for trailer wiring installation.



by:

Junction Box is flimsy, difficult or impossible to seal and the studs inside rust.



by:

Installation of this product was extremely smooth. Installed on a 2023 Jeep Gladiator. With the harness it was plug and play.



by:

Great item to replace your old trailer hook up. I did fine the almost same 7-way kit and junction box for less than etrailer charges $26.00), but the kit did not include the connectors that you can purchase for less then $5.00 at HF.



by:

Easy mount and came with labels for each color wire to match up your wires on your trailers. Recommend for anyone with a newer truck with the 7 plug.



by:

Fast shipping!! Everything was in good condition!! I will leave a review when I get the new lights and 7 way hooked up!! Thanks again guys!!



by:

Good quality, took a long time to arrive at etrailer which held up my whole order. Ashley though was very helpful and kept in communication

Victoria H. profile picture

Victoria H.

4/1/2025

I'm glad to hear Ashley kept you informed and was helpful to you, even though there was a delay in your order Michael. What are you hauling?



by:

The quality of the box is amazing. I ordered another one for a different trailer and the plastic box construction is much thicker and heavy duty feeling. The other one I ordered was from Amazon

Gwendolyn Y. profile picture
Etrailer Expert

Gwendolyn Y.

4/9/2025

I better not find out that you're using the online jungle next time you need something for your trailer, Andrew.



by:

This product is very nice, check the connectors inside the box to make sure everything looks great. My ground wasn’t crimped well but Joann immediately sent out another one without question getting it the next day. Great customer service! And this one was perfect.

Brooke M. profile picture
Etrailer Expert

Brooke M.

1/16/2025

Joanne is awesome! Ill make sure she gets to see this review. Thanks Anne!



by:

Made rewiring the trailer easier with all wires going into the junction box, the trailer now has a very clean and professional appearance instead of the mess of wires that were originally on it.



by:

The product’s are exactly what I needed and the service is excellent, timing was as expected . Great experience over all



by:

Product as described and quality - note you need to purchase 2 mounting screws. I used 1/4-20 self taping metal screws and 7/64th drill bit for pilot hole.



by:

Fairly stiff cable, especially in the cold. Box is thin, flimsy ABS that cracked during install. Box has no gasket or seal of any kind to keep water out. Rubber grommets/wire pass-throughs fit loosely in their slots. lightweight ring terminals, and they're crimped on rather than soldered. Not a lot of real estate in the box to run wires. I ended up soldering the ring terminals on and covering everything with RTV sealant when I finished wiring to keep water out. It does its job, but I wouldn't buy again.



by:

Easy to install, used to upgrade the wiring for a 1963 Travel Eze.



by:

This really helped keep all the wiring from electric brakes, interior lights, trailer lights, and breakaway switch in order. It would have been a mess with out it. I thought the 7 foot cord might be too long but its not at all.



by:

Let you know when I put it on



by:

I loved the whole process of installing this product. Having an electrical box for all the wires makes connecting them super easy, plus If I ever want to add a wire to run something else it would take me 5 minutes to install. I couldn’t recommend this product more.



by:

perfect for what I needed


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364
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See what our Experts say about this etrailer Trailer Wiring

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