Custer Trailer Connector Adapter - 4-Way Round to 4-Way Flat

Custer Trailer Connector Adapter - 4-Way Round to 4-Way Flat

Item # ADP001

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Custer Wiring - ADP001
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This adapter converts a 4-way round connector to a 4-way flat connector. The durable ABS plastic adapter is compact, and pull grips on the flat end make it easy to install and remove. Lowest Prices for the best wiring from Custer. Custer Trailer Connector Adapter - 4-Way Round to 4-Way Flat part number ADP001 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Reviews (14)
  • Q & A (10)
  • Videos (1)
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Custer Wiring - ADP001

  • Wiring Adapters
  • Single-Function Adapter
  • 4 Flat
  • 4 Round
  • Plug and Lead
  • Custer

This adapter converts a 4-way round connector to a 4-way flat connector. The durable ABS plastic adapter is compact, and pull grips on the flat end make it easy to install and remove.


Features:

  • Adapter converts a 4-way round trailer connector to a 4-way flat connector
  • Pull grips on flat end make plug easy to install and remove
  • ABS plastic construction is strong and durable
  • Approximate length: 4"


ADP001 Custer Trailer Connector Adaptor - 4-Pole Round to 4-Pole Flat







Video of Custer Trailer Connector Adapter - 4-Way Round to 4-Way Flat


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




Video Transcript for Custer Wiring - Wiring Adapters - ADP001 Review

Today we are going to be reviewing Part# ADP001. This is the Custer Trailer Connector Adapter, four-way round to four-way flat. So it's going to convert your round trailer connector to a four-way flat trailer connector. It's got the nice easy-to-use pull grips. It's going to make the plug easy to install and remove. This is going to made from an ABS plastic construction, very strong, durable, and long-lasting.

If we take a measure of the approximate length, measuring from edge to edge, it's going to give us a measurement of about 3-1/2, 3-5/8 of an inch, somewhere right around there. It's really to simple to install. This end right here is going to plug into the four-way round connection on your vehicle. Then, on the back side of that, it's going to expose the connection point for the four-way flat connector. That's going to do it for our review of Part #ADP001. This is the Custer Trailer Connector Adapter, four-way round to four-way flat.

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Customer Reviews

Custer Trailer Connector Adapter - 4-Way Round to 4-Way Flat - ADP001

Average Customer Rating:  3.9 out of 5 stars   (14 Customer Reviews)

This adapter converts a 4-way round connector to a 4-way flat connector. The durable ABS plastic adapter is compact, and pull grips on the flat end make it easy to install and remove.

- ADP001
by:

The round end will not fix the round socket on the truck. It was made with too large a diameter. Tried to find a socket that it would fit at several auto parts stores and at U-Haul main store and none had one that would fit. Bummer. It's of no use. 284439



- ADP001
by:

This adapts to the "heavy duty" round outlet with one thin and three thick pins (fits my '95 Lazy Daze). Round outlet's lid/latch engages correctly. Flat side relies on friction. Molded housing seems strong and fits snugly. Note: some descriptions say "length = 4 ft". That should be 4 inches. 453020



- ADP001
by:

We plugged it in and it works great. Still working great a year later. Very happy with our purchase. 656521



- ADP001
by:

Wonderful sight too easily order from with fast fast delivery and great prices! Thank you for this great product 649456



- ADP001
by:

My stock wiring plug receptacle (4Round) on my Fleetwood Motorhome is not wired the same. Could not use it for my application. 637295



- ADP001
by:

Received. Thank you very much! 603406



- ADP001
by:

did not fit the female end so I tried to grind it down a little and it is no longer useful - probably would have been ok if it fit 551812



- ADP001
by:

I purchased a $5 adapter on a Sunday and paid $25 for 2nd day air and didn't get my adapter until Thursday late evening... Sure, I bought from etrailer before and no problems but this sounds like a rip-off. I will sureply accept my shipping money back. 4 business days later is not 2nd day air. 462241



- ADP001
by:

Fast service very good 446978



- ADP001
by:

Great product. 425042



- ADP001
by:

ok 325301



- ADP001
by:

A great product. 280264



- ADP001
by:

Works as shown. It is hard to push into the Pollak socket on the vehicle and seems a little flimsy...have to be gentle with it. 149537



- ADP001
by:

Great product, worked just as expected. Thanks 143077


14
14

Ask the Experts about this Custer Wiring

Do you have a question about this Wiring?


  • 4-Way Flat to 4-Way Round Trailer Plug Wiring
  • It may seem odd to clarify, but we sometimes have customers describe things differently than we may. So if you are looking for the connector between a 4-way flat on your vehicle and the 4-way round connector a towed vehicle would plug into you simply would need the Custer Trailer Connector Adapter - 4-Way Round to 4-Way Flat # ADP001. If you needed a longer connector you can use # Adapter 4 Round to 4 Flat # 47465. If you are looking for a long trailer wiring umbilical cord, you would...
    view full answer...

  • Different 4-Way Connector Styles and Adapters
  • There are not two different 4-pin round connectors; there are just two types of 4-pin connectors, 4-flat such as the Hopkins Endurance 4-Way Flat Trailer Connector # HM48110 and 4-round such as the Pollak Heavy-Duty, 4-Pole, Round Pin Trailer Wiring Connector # PK11402. The 4-round is more rare than 4-flat so you are less likely to see it. If you have a 4-round on your vehicle you can use the Trailer Connector Adapter - 4-Way Round to 4-Way Flat # ADP001. I have also added a link to...
    view full answer...

  • 4-Way Flat Adapter Recommendation to Use with RoadMaster 4-Wire Connector # RM-910030-1
  • Yes, the 4-way round to flat adapter part # ADP001 that you referenced will work with the RoadMaster 4-Wire Connector # RM-910030-1. It will plug right in and give you a 4-way flat to use.
    view full answer...

  • Recommended 4-Way Connection Between Towed Vehicle and Motorhome
  • The only real advantage of the 4 round over the 4 flat trailer connector is the clean look of the connection point and the protection from elements when not in use. For instance the Pollak Heavy-Duty, 4-Pole, Round Pin Socket, Concealed Terminals - Chrome - Vehicle End # PK11410 has a clean finished look on the front of a towed vehicle and will protect the connection from dirt and debris with the spring loaded cover. Many people like the connection between the motorhome using a harness...
    view full answer...

  • Wiring Adapter to Mate 4-Pole Flat Vehicle Connector to 4-Pole Round
  • The easiest and least-costly solution for mating your wiring connectors is to replace the connector on your portable lights with a trailer-side 4-pole like # HM48110. This will allow your lights to be connected to the 4-pole on your vehicle. If you need to convert a 4-flat to a round 4-pole you can use either # ADP001 or # 47465. I have linked our main page for wiring adapters and you can use the filters on the page to select each type of connector you need to see available adapters....
    view full answer...

  • Solution for 4-Way Round Connector on Trailer to 4-Way Flat Connector on 2016 Honda Pilot
  • I do have a solution for you but unfortunately there are no adapters for a round 4-Way connector on your trailer to the Curt T-Connector # C56291 on your 2016 Honda Pilot. Instead what you will need to do is swap out the 4-Way round connector on your trailer for a 4-Way flat connector. I recommend cutting the connector off and splicing the Hopkins Endurance Easy-Pull Harness # HM38134 on your trailer wiring so that you get a connector on your trailer that is compatible with your vehicle....
    view full answer...

  • What Style 4-Way Round Socket Does the Custer Trailer Connector Adapter # ADP001 Fit
  • The Custer Trailer Connector Adapter # ADP001 that you referenced is designed to fit 4-way round receptacles like the Pollak Heavy-Duty, 4-Pole, Round Pin Trailer Wiring Socket # PK11404.
    view full answer...

  • Trailer Wiring Adapter to Convert 4-Pin Round Vehicle Connector to 4-Pole Flat Type
  • Thank you for providing the photo of the 4-pin round trailer connector on your vehicle. We do have two different products that will adapt this connector to a standard 4-pole flat trailer connector. Hopkins offers their adapter # 47465 (that can be used with mounting bracket # 18144) and Custer offers their adapter # ADP001 that does not require a mounting bracket.
    view full answer...

  • Recommended Adapter for 4-Way Round Trailer Connector on Motorhome
  • The Custer Trailer Connector Adapter - 4-Way Round to 4-Way Flat # ADP001 will work for your 1995 motorhome with 4-Way round. The 4-Way round trailer wiring connections carry the same functions as the 4-Way flat trailer wiring connections they are just more heavy-duty, so this adapter will allow you to capture the functions you need for your trailer. The pins will fit the dimensions you gave as that is the traditional application for a trailer connector like # PK11404.
    view full answer...

  • Needing a Trailer Wiring Adapter From RV to Flat Towed Vehicle
  • If you have a 4-way flat connection on you RV and a 4-way round connection on your flat towed vehicle, then I recommend using a the Custer Trailer Connection Adapter, # ADP001. This adapter used with a wiring harness like # 18045 will allow you to connect to the 4-way flat connector on your RV to the 4-way round connector that is installed on your flat towed vehicle.
    view full answer...


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Info for this part was:

Expert Research:
Jameson C
Written by:
Rachelle B

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