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Hopkins Endurance Flex Trailer Connector Adapter w/ LED Circuit Tester - 7-Pole to 4-Pole or 5-Pole

Hopkins Endurance Flex Trailer Connector Adapter w/ LED Circuit Tester - 7-Pole to 4-Pole or 5-Pole

Item # HM47390
Retail:$43.93
Our Price: $20.02
You Save: 54%
Trailer Wiring
Shipping Weight: 0.58 lbs
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This adapter lets you use your 7-way, RV-style connector with a 4- or 5-way flat, trailer-end plug. It includes a circuit tester with red LEDs, and the 5" long, flexible wire between the plugs makes for easy hookup. Great Prices for the best trailer wiring from Hopkins. Hopkins Endurance Flex Trailer Connector Adapter w/ LED Circuit Tester - 7-Pole to 4-Pole or 5-Pole part number HM47390 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (20)
  • Q & A (0)
  • Videos (2)
  • Photos

Hopkins Trailer Wiring - HM47390

  • Wiring Adapters
  • Multi-Function Adapter
  • 4 Flat
  • 5 Flat
  • Plug and Lead
  • 0 - 5 Feet Long
  • 7 Round - Blade
  • Hopkins

This adapter lets you use your 7-way, RV-style connector with a 4- or 5-way flat, trailer-end plug. It includes a circuit tester with red LEDs, and the 5" long, flexible wire between the plugs makes for easy hookup.


Features:

  • Adapter converts your 7-pole, blade-style, vehicle-end connector to a 4- or 5-wire flat connector
  • Integrated circuit tester with red LEDs lets you know when wiring is functioning properly
  • Flexible wire between plugs provides larger range of motion for more convenient hookup than with standard adapters
  • Large, easy-pull grip design makes installing and removing the plug effortless
  • Built-in cover and included grease packet help to protect the terminals from dust, grime and corrosion
    • Cover also prevents grease from spreading all over during storage


Specs:

  • Distance between plugs: 5"
  • 3-Year limited warranty


This adapter allows the 7-way, RV-style, vehicle-end connector pictured on the left to work with the 4-way and 5-way, trailer-end connectors on the right.


7-Way, RV-Style, Vehicle-End Connector with 4-way or 5-way, trailer-end connector


47390 Hopkins Endurance Flex Trailer Connector Adapter w/ LED Circuit Tester - 7-Pole to 4-Pole or 5-Pole




California residents: click here


Video of Hopkins Endurance Flex Trailer Connector Adapter w/ LED Circuit Tester - 7-Pole to 4-Pole or 5-Pole

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




Video Transcript for Hopkins Wiring - Wiring Adapters - HM47390 Review

Today, we're going to review part number HM47390. This is the Hopkins Endurance Flex 7-Way to 4-Way or 5-Way Flat Trailer Connector Adapter with the LED Circuit Tester. Now, this adapter will convert your 7-way blade style vehicle and connector to a 4-way or 5-way flat trailer connector. Uses a integrated circuit tester right here as the red LEDs, and these are light up to let you know when the wiring is functioning properly. In between the two is a nice, flexible wire. This provides a larger range of motion for more convenient hook up than with your standard adapters. On the 7-way, you can see has a nice, large easy pull grip design to make the installing and removing the plug there easy, and also on your 4-way or 5-way, you can see it does have the finger grips right here built in that does the same thing. It allows you to push it in easily or remove it easily.

It has a built-in dusk cover, which helps you when you're not using the 4 or 5-way, and put the dusk cover on and that'll protect those terminals from any corrosion or from any damage. Now, this part also includes a nice dielectric grease packet, and what's nice there is any time you do a electrical connection, you should put a little dielectric grease on those connection points to keep the terminals from any corrosion. Now, the distance of this flexible wire between the two adapters is 5 inches, and again the way you would do this is you can plug this into the 7-way on your vehicle and then what you might want to do is once you plug this into your 7-way in your vehicle, you can activate your lighting system. If you're going to use it as . As you can see it, there's five connectors. Sometimes, people will say, "Well, I got a 4-way." You can still use a 4-way trailer and connector on this. You just won't use the end one. The end one is for brake or reverse backup connection. Basically, what these lights are going to show you is you'll notice above the lights, the one on the very ends has BK for backup.

The one next to it says RT for right turn and brake. Next one says LT for left turn and brake, and the very end one is the tail lights and then the exposure when these are ground all the time. What you want to do is when you plug this into your 7-way on your vehicle, if you activate your lighting, what will happen is when you turn on your tail lights, you'll see this light right here on the end will light up. When you turn on your right turn or the left turn, the next one to that will light up. When you turn on your right, the next one to that will light up. When you apply your brakes, both of those right turn and left turn will light up because they're on the same circuit. If you're using it as a 5-way when you put it in reverse, this end one should light up. Now, if you're using it as a 4-way, of course you won't use that end one, but it gives you a good idea.

Make sure it's functioning before you're hooking it up to your trailer and using it. That should do it for the review on part number HM47390, the Hopkins Endurance Flex 7-Way to 4-Way or 5-Way Flat Trailer Connector Adapter with the LED Circuit Tester. .

Customer Satisfaction Score:


Customer Reviews

Hopkins Endurance Flex Trailer Connector Adapter w/ LED Circuit Tester - 7-Pole to 4-Pole or 5-Pole - HM47390

Average Customer Rating:  4.8 out of 5 stars   (20 Customer Reviews)

This adapter lets you use your 7-way, RV-style connector with a 4- or 5-way flat, trailer-end plug. It includes a circuit tester with red LEDs, and the 5" long, flexible wire between the plugs makes for easy hookup.

by:

works like it should



by:

Works great for converting to my small trailer. Everytime i use it, it works. Held up like a champ with hundreds of trimes plugging in and unplugging. Loaned to family a few times and they asked where I bought it so they now shop here too.

Andy B.

4/18/2017

Rugged and still going.



by:

Handy with indicator lights. Added backup lights on a small trailer so needed 5 conductor. This also accepts a flat 4 trailer, fifth spot just not used, so this replaces a couple adaptors I have.



by:

Product worked as advertised. Pretty handy for those of you who haul trailers on an regular basis. Know when the power is comming fromnthe vehicle in a quick glance.



by:

extension provides a little extra length and gives flexability.



by:

Awesomely big selection of parts.. probably the biggest selection I've seen in one place online. Very quick shipping, excellent pricing.. was a seamless interaction. eTrailer will definitely be the next place I look when I need to buy truck/trailer parts online.



by:

Been working great for 2 1/2 year but the ground pin broke. Great news it was under warranty and I got a new.



by:

Very versatile adapter - great to have the circuit tester built in.



by:

John

9/8/2023

The adapter still works great - never had an issue with it. It seems to a quality adapter.

Etrailer Expert

Mike L.

11/1/2023

@John We're glad to hear that! Hopkins does a nice job on their trailer wiring adapters like the # HM47390.


by:

This fit my Honda Pilot perfectly. Nice snug fit. Love the built in tester. Great price and service from etrailer. Would recommend this product to other Honda Pilot owners.



by:

I had great service and was updated on my order quickly.



by:

Nice product. The LEDs make it double as a tester.



by:

Product was as I expected works like it's supposed to.



by:

Seems to be good quality. I like the LED pilot lights.



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Works as expected!



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See what our Experts say about this Hopkins Trailer Wiring

  • How to Make Sure 7-Way on 2015 Ford F-150 Matches 4-Way on Trailer with Adapter
    I'm pretty confident that the 7-Way at the back of your 2015 Ford F-150 is wired correctly to match with the 4-Way on your boat trailer. Attached is a photo showing what the typical pin functions are for a 7-Way. You can verify that with a tester or just use the Hopkins Endurance Flex Trailer Connector Adapter # HM47390 which uses a built-in LED circuit tester to easily help you ensure that all of your wiring is matching up.
    view full answer...
    Image 1 for
  • Getting Reverse Lights to Work on a 2012 Nitro Z-9 Boat Trailer Towed by a 2006 Ford F-150
    Many trailers actually do not have reverse lights but if yours does, you will want to check the center pin on the 7-Way connector on your truck to see if it is working. Use a circuit tester like # 3808 if needed to test the pin. If this pin does not show power when the vehicle is in reverse, then you will need to route a wire to the reverse light circuit on the truck to get it to work. It is also possible that you will need to check the fuse on the truck related to the reverse light circuit...
    view full answer...

Do you have a question about this Trailer Wiring?


Info for this part was:

Employee Joe V
Installed by:
Joe V
Employee Andrew K
Video by:
Andrew K
Employee Tyler C
Written by:
Tyler C
Employee Dustin K
Video Edited:
Dustin K
Employee Alexander C
Updated by:
Alexander C

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