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Optronics 7-Way Trailer Harness Plug Protector

Optronics 7-Way Trailer Harness Plug Protector

Item # ACP7B
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Safeguard your trailer wire connectors against moisture, dust, and corrosion with this plug protector. Secures to trailer to protect harness from impact and abrasion. Fits 7-way round connections. Hardware not included. Call 800-298-1624 to order Optronics accessories and parts part number ACP7B or order online at Free expert support on all Optronics products. Guaranteed Lowest Price and Fastest Shipping for Optronics 7-Way Trailer Harness Plug Protector. Accessories and Parts reviews from real customers.
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Optronics Accessories and Parts - ACP7B

  • Trailer Wiring
  • Wire Protection
  • Connector Covers
  • Optronics
  • 7 Blade

Safeguard your trailer wire connectors against moisture, dust, and corrosion with this plug protector. Secures to trailer to protect harness from impact and abrasion. Fits 7-way round connections. Hardware not included.


  • 7-Way plug protector safeguards your trailer wire connectors against moisture, dust, and corrosion
  • Secures to trailer to protect harness from impact and abrasion
  • Surface mount with four screws - hardware not included


  • Dimensions: 3-3/16" wide x 2-15/16" tall x 2-1/4" thick
  • 3-Year warranty

ACP7B Connect-to-Protect 7-Round Trailer Wire Connector Dust Cover

California residents: click here

Video of Optronics 7-Way Trailer Harness Plug Protector

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

Video Transcript for Optronics 7-Way Trailer Harness Plug Protector Installation

Adam: What's going on, everybody Adam here with each etrailer. Today, we're going to be taking a look at the Optronics 7 Pole Plug Protector.Over time, we are going to get a decent amount of dust and grime getting on the inside of our 7 pole. And that's going to not really get us the best connection, and we might see some shortages and something like that on our trailer. As you guys can see here, we've got a winch, a big battery, solar panel, and there's a couple of lights back there, too. Everything needs power, and this is how we get the power. So to be able to actually protect our plug, so we can not have to replace it so often, is definitely going to be a plus.

It's just going to slip right in here. Very, very simple and easy. So this is going to fit all your 7 pole connectors. It also has like a little tab here.So it's going to stay nice and tight and all we're really going to have to do to take it out is just kind of fold that back and wiggle it out. And then we can go ahead and plug it in.

But don't be worried if it's not going to fit your guys's, it is a very, very basic shape and it's going to fit quite nicely.It is going to be made of a pretty tough plastic. So it isn't going to fade or anything over time and it's not going to get any rock chips or anything like that. One thing to note, we are going to have dimensions with this product and it's going to be about three and three sixteenth inches wide. We're going to have about two and fifteen sixteenth inches tall, and it's going to be about two and a fourth inches thick.It really isn't too difficult to mount this up. There's a lot of different ways you guys can do it, put it wherever you want.

We are going to supply our own hardware. But what we're going to do here is just go ahead and show you guys how we installed it on our trailer today.So the first thing we want to do is to find the ideal spot to place the holder. So I have my 7 pole here. I think it's going to be best, especially when this is fold up. I think I'm just going to go ahead and put it down here somewhere and obviously make sure that our connection's going to fit and it does.

So that's good. So once we find out where we're going to put it, I found it best to go ahead and mark it with the drill bit.You guys can also achieve this by just getting like a paint marker or something like that. So what we're going to do is mark them all and we are going to have to supply our own hardware. So once we get these drilled out, we're going to grab whatever hardware we want to mount it up and we'll get going.Now we can go ahead and start mounting up our cover. Line it back up. And I'm actually just using some self-tappers. And with the drill, the hole drilled, it's going to make it a little bit easier to get them in there, but you guys can use whatever hardware is best for your guys's trailer.Once we have everything all mounted up, now we can just go ahead and slide our 7 pole into the little protector here.And that's basically it for our look at the Optronics 7 Pole Protector.

Customer Reviews

Optronics 7-Way Trailer Harness Plug Protector - ACP7B

Average Customer Rating:  4.7 out of 5 stars   (154 Customer Reviews)

Safeguard your trailer wire connectors against moisture, dust, and corrosion with this plug protector. Secures to trailer to protect harness from impact and abrasion. Fits 7-way round connections. Hardware not included.


I mounted this product to the front of my winch stand for easy access to store my trailer power plug when not in use. It protects it from dirt and damage. Another great little product from etrailer!!! I highly recommend to all boaters with the round type plug.

This product has held up perfectly after a year of use and I would highly recommend it.
Billm - 07/21/2021


Overall I am very pleased with this addon. I was always putting the end up into the back of the pin box to keep it out of the weather. Now 2 wraps and plugs right end. Well worth the investment of like to keep things as good as new.


Works well made a bracket and used existing holes in my frame from previous hitch that I removed

I moved it to a new location because where it was at collected dirt when I was towing trailer
Les - 07/05/2020


They work great. Fast delivery. I bought from etrailer before and have always been very satisfied.


Excellent for docking and protecting the contacts on your 7-way trailer plug. I drilled and screwed this to the trailer A-frame with stainless steel self-drilling sheet metal screws to keep the connector plug from ending up down on the ground and getting corroded contacts.


This stopped the corrosion in my harness plug.


Effective at protecting & storing the connecting cable, but should have mounted it horizontally instead of vertically along the trailers tongue frame area. Secured it with Velcro to ensure it remained in place when not being used. This is NOT a complaint, it is a good product and does what it is suppose to do.


The 7-pin plug holder is great, I installed it yesterday with the 7-pin plug hanging down from the holder to keep out water, etc. When I saw this holder I also told two of our camping buddies about it and they also ordered one each for there use. JL

Working out great, holds the wiring plug and does not get water in the plug, three other friends order them from you and are pleased also
John L - 09/26/2020


Not a bad product, but the plug connector is rubber made and not hard plastic. Would be easier to insert being a hard surface. Overall it works for what I need it to.


The BEST trailer/truck accessory company on the web. Q&A has always been their strong "lead the industry" business model. Have purchased from them for years and have always been happy with the quality of their products.


Well made and does the job.

Still working as it should.
Bob - 12/16/2021


I have these on my two trailers for over a year now. They are perfect for stowing the harness plugs when the trailers are parked. I mounted these on the frame of the trailer just behind the trailer coupler, the protector keeps the harness dry and off the ground. Highly recommend the plug protector for anyone.


The trailer connector electrical pins are well protected from the elements.

by: 05/11/2021

Products are always top notch. Order was returned to sender account insufficient info on label. Contacted customer service and they took care of resending product ASAP. Very happy with service received..THANK YOU


Very nice protector


Works, stows plug neatly and secure. I mounted mine facing down some just to make sure any moisture that may get in would drain out.


l bought 3 of these for my trailers - keeps the plugs off the ground, and keeps moisture and dirt out - great idea!


Works great to keep the trailer plug clean and dry.

Plug protector continues to work well. Seems to be durable enough as it has been exposed to both direct sunlight and snow.
Robert - 04/13/2021


It is difficult to slide into plug protector. once in though it does its job.


I haven't installed them on my trailer but they look like an excellent product at an inexpensive price


Just what I ordered


It's a nice product that arrived quickly after ordering. The only negative is it does not come with stainless screws for mounting.


Keeps everything nice and neat on the t railer.


The part 4hat holds the connector in does not stay in place and the connector can fallout if you mount it vertical (which i had to)


Works reasonably well. The device is tight so it takes a little work to get the wiring plug to go into the protector, but that's probably a good thing.

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Info for this part was:

Employee Cole B
Installed by:
Cole B
Employee Adam E
Installed by:
Adam E
Employee Chris R
Video Edited:
Chris R
Employee Victoria B
Expert Research:
Victoria B
Employee Daron K
Edited by:
Daron K
Employee Brian T
Written by:
Brian T
Employee Aidan B
Video by:
Aidan B

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