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Hopkins Wiring Harness with 4-Pole Flat Trailer Connector - Trailer End - 6' Long

Hopkins Wiring Harness with 4-Pole Flat Trailer Connector - Trailer End - 6' Long

Item # HM38168
Our Price: $6.90
Trailer Wiring
Shipping Weight: 0.28 lbs
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Wire your trailer with this universal, splice-in wiring harness so that you can connect the trailer's wiring to your vehicle's during towing. Corrosion-resistant terminals are long-lasting. Great Prices for the best trailer wiring from Hopkins. Hopkins Wiring Harness with 4-Pole Flat Trailer Connector - Trailer End - 6' Long part number HM38168 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (31)
  • Q & A (0)
  • Videos (1)
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Hopkins Trailer Wiring - HM38168

  • Trailer Connectors
  • Trailer End Connector
  • 4 Flat
  • Plug and Lead
  • 6 - 10 Feet Long
  • Hopkins

Wire your trailer with this universal, splice-in wiring harness so that you can connect the trailer's wiring to your vehicle's during towing. Corrosion-resistant terminals are long-lasting.


Features:

  • 4-Way flat trailer-end connector plugs into the 4-way flat on your vehicle
    • Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
  • Simple installation
    • Hardwire to existing trailer wiring
  • Corrosion-resistant terminals are long-lasting


Specs:

  • Harness length: 6'
  • Wiring configuration:
    • White: ground wire
    • Yellow: left turn/brake light
    • Green: right turn/brake light
    • Brown: tail lights
  • 90-Day limited warranty


38168 Hopkins 4-Way Flat Connector - Trailer End - 72"




California residents: click here


Video of Hopkins Wiring Harness with 4-Pole Flat Trailer Connector - Trailer End - 6' Long

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




Video Transcript for Hopkins Wiring - Trailer Connectors - HM38168 Review

Today we're going to be taking a look at the Hopkins 4-Pole Flat Wiring Extension. This wiring harness is going to simply act as an extension of your trailer's wiring. It's going to feature one trailer end connector, and then this side right here is going to wire into the trailer wiring on your trailer. On the connector plug right here, we're going to have corrosion resistant terminals. These are very long-lasting. Nice, strong durable design.

It's going to have some grips here on the connector head, gives it an easy grip design. The overall harness length is going to measure about 6 feet long, so that's 72 inches. When it comes to the wiring configuration, your green wire is going to be right turning brake. Yellow is going to be left turn and brake. Brown is going to be for your tail lights, and white is going to be for your ground wire.

That's going to do it for today's look at the 4-Pole Flat Wiring Extension.

Customer Satisfaction Score:


Customer Reviews

Hopkins Wiring Harness with 4-Pole Flat Trailer Connector - Trailer End - 6' Long - HM38168

Average Customer Rating:  4.9 out of 5 stars   (31 Customer Reviews)

Wire your trailer with this universal, splice-in wiring harness so that you can connect the trailer's wiring to your vehicle's during towing. Corrosion-resistant terminals are long-lasting.

by:

No complaints to think of.



by:

This was the only place where I could find this trailer-side Hopkins flat 4-connector with 6' wire. It was exactly what I needed, but I couldn't find anywhere else. I've installed it as part of a total trailer rewire and it works fine. I wanted Hopkins because they use a much heavier wire. It is being used to go from truck through trailer tongue, then mating with the Hopkins 25' wire roll, on back to the lights. I've used this dealer before, and always get what I want. My complaints are how much they charge for shipping and the amount of time they took for me to receive it.

Jimbo

7/27/2018

Everythings working as it should. No complaints.



by:

Ordered a bunch of stuff for hooking up a towed. Everything arrived as ordered and quick shipping. Everything fit the application without much trouble. Communication from etrailer was excellent. I would purchase from etrailer again.

Hopkins S.

4/26/2017

Steve G, I see by your comments that you did order a bunch of stuff!! If you should have any questions or problems please feel free to contact the etrailer customer service department. Thanks for being such a good customer.



by:

etrailer had the part i need which I could find no where else. Service was fast and customer service was great evidenced by an email checking that I received their product, offering installation help, and thanking me for being a customer. Pretty amazing for an online company.



by:

Well made and worked great. I needed the 6' pigtail it came with.



by:

I give them a 10. Great company.



by:

Exactly what it is supposed to be. Simple item. Nice to have choices on length. I can usually find whatever trailer part I need on Etrailer.



by:

Easy to navigate website. Easy purchase and fast shipping.



by:

Great people to work with. Excellent prices on all trailer parts. Thanks



by:

Exactly what I ordered and exactly what I needed!

Hopkins S.

6/23/2017

Hopkins appreciates your business, Heidi and we are grateful you purchased our Trailer Connector. If you have any concerns or questions, please get in contact with etrailer customer service. Thank you!



by:

Worked well.



by:

Good price, and it works

Hopkins S.

7/5/2017

Thanks John b for the great review and rating!! Hopkins appreciates your business.



by:

Works good fits plug snug.



by:

Thank you for the product and prompt delivery..has been a pleasure doing business with you...G. In Ga.



by:

Worked as expected. 6' was a little short for my purposes and I had to add a foot of wire.



by:

Great place to do business with always good products and quick shipping.



by:

Fine



by:

As advertised. Worked well



by:

Name brand products perform as expected.



by:

Timely service. Product works as expec ted.



by:

Fast and friendly service.
Package arrived
on time as promised.
Great company!



by:



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by:

Works great



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31
Show More Reviews

See what our Experts say about this Hopkins Trailer Wiring

  • Towing Motorcycle Trailer w/ 5-pin Trailer Connector Using Vehicle with 4-Pin Flat Trailer Connector
    A co-worker and I cobbled something together a few years ago that we called the Frankenadapter. It would consist of the # 118158 Vehicle to Vehicle Taillight Converter, a 4-pole trailer-side connector like # HM38168 and a 5 pin round vehicle side connector like # PK11502. The adapter would be constructed as shown in the provided photo. The 5 pin connector would connect to the wires shown to the right. The adapter will separate the stop lamp signal from the right and left turn signals so...
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  • Replacement Trailer Connector with 8 Wires for a Boat Trailer
    A 4-flat trailer connector is responsible for carrying four functions which are usually brake, left turn, right turn, and tail lights. I am not familiar with a 4-way trailer connector that uses 8 wires as I do not see what the other wires could be for. The best way to determine the correct replacement would be to test each of the wires for function with a circuit tester and then replace the connector with the one that has the slots for the functions you need. It may be that instead of splicing...
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  • Towing a Trailer with a 4-Way Trailer Connector with a Vehicle that has a 5-Way Connector
    It sounds like you're trying to tow a trailer that has a 4-way connector, like part # HM38168, with a vehicle that has a 5-way connector, like part # HM37908. If this is the case you don't need any additional parts or a converter. A 4-way and 5-way will plug into each other you just won't have the 5th pin connected. Nor will you have the function that's carried on that pin. If this isn't what you're trying to do then let me know your exact set up so I can be more help.
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  • What Are The Standard Colors And Functions For A 4 Flat On A Cargo Trailer
    The standard 4 Flat will have the White (ground), Brown (running lights), Yellow (left turn and brake), and Green (right turn and brake). Black will typically be used for 12 volt power, but can also be any number of things. The only way to know for sure what it is used for will be to trace it to its source. However, if you only need the 4 standard functions, you can definitely just cap that off and use something like the Hopkins 4 Flat # HM38168. With that said, if you do trace it and...
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  • Troubleshooting Turn Light Fuse Blowing With Cargo Trailer
    If you add additional wire you're still going to be getting under the trailer to run it. I would go ahead and look under the trailer to check for a short in the wiring. Many times this can be found near the lights where the wire connects. It would also be a good idea to check out your connector. Make sure it is free from any debris and corrosion. If you don't find anything, instead of running a separate 4-way I would run new wire from the lights to your 7-way connector. It would also be...
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  • Will Hopkins Wiring Harness with 4-Pole Flat Trailer Connector Plug Into a Hopkins 4/7-Way Connector
    Yes, the Hopkins Wiring Harness with 4-Pole Flat Trailer Connector # HM38168 will plug into the 4-Way receptacle on your truck. Sometimes we see some compatibility issues with 4-Way flat connectors but it is rare and you would not have to worry about that since both this part and the 4-Way on your truck are made by Hopkins. I have included a link to a video review of the 4-Way for you.
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Do you have a question about this Trailer Wiring?


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Michael H
Expert Research:
Michael H
Employee Cole B
Installed by:
Cole B
Employee Alexander C
Written by:
Alexander C
Employee Kevin C
Test Fit:
Kevin C
Employee Schuyler H
Video by:
Schuyler H

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