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Hopkins 4-Pole Flat Wiring Extension - 120" Long

Hopkins 4-Pole Flat Wiring Extension - 120" Long

Item # HM48235
Retail:$23.80
Our Price: $16.67
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This 120" loop extends your current 4-way connector for more flexibility when towing. Ideal for connecting your towed vehicle to your RV. 1-636-306-4830 to order Hopkins accessories and parts part number HM48235 or order online at etrailer.com. Free expert support on all Hopkins products. Great prices and Fastest Shipping for Hopkins 4-Pole Flat Wiring Extension - 120" Long. Accessories and Parts reviews from real customers.
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Hopkins Accessories and Parts - HM48235

  • Tow Bar Wiring
  • Extensions
  • 4 Flat to 4 Flat
  • Hopkins
  • Straight Cord

This 120" loop extends your current 4-way connector for more flexibility when towing. Ideal for connecting your towed vehicle to your RV.


Features:

  • Wiring harness extends your current 4-way connector for more flexibility when towing
    • Perfect for running power from your RV to your towed vehicle or trailer
  • Terminals resist corrosion
  • Dimensions: 120" long


48235 Hopkins 4-Way Flat Extension - 10' Long

Installation Details HM48235 Installation instructions


California residents: click here


Video of Hopkins 4-Pole Flat Wiring Extension - 120" Long

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




Video Transcript for Hopkins Tow Bar Wiring HM48235 Review

Today we're going to be taking a look at the Hopkins 4-Pole Flat Wiring Extension. This wiring harness is going to extend your current 4-way connector for more flexibility when towing. If you need some extra length with your wiring connectors for your 4-way flat, this is going to be a perfect solution for you. This is going to be ideal for running power from your RV to your towed vehicle or trailer. It's going to feature corrosion resistant terminals. These are going to last a long time, they're going to stand up well to the elements, and they're going to do a great job at resisting rust and corrosion, making sure to send through a nice, strong signal.

The unit's going to measure about 120 inches long, which is going to be about 10 feet long, so it's a pretty long wiring extension or harness. On this side right here, it's going to come with a dust cap to keep dirt and grime out of the connection points. That's going to do it for today's look at the Hopkins 4-Pole Flat Wiring Extension.


Customer Reviews

Hopkins 4-Pole Flat Wiring Extension - 120" Long - HM48235

Average Customer Rating:  4.9 out of 5 stars   (35 Customer Reviews)

This 120" loop extends your current 4-way connector for more flexibility when towing. Ideal for connecting your towed vehicle to your RV.

by:

I used this product to "extend" tag lights to the rear of my camper. In conjunction with this, I also used a waterproof wiring box. I've had them on the camper for a year now, and have towed my little aluminum boat behind the camper on several occasions, it works like a charm! As an aside, I wired in a remote camera into the tail-lights wiring on this harness, now I turn on my driving lights and my remote camera allows me to monitor the boat in 'real-time' while I'm towing. Overall, this works like a charm. Thanks, E-trailer!
Mike


Comments
A year later my original view still stands. This product is still working excellent for my needs.
Mike - 08/28/2022


by:

I’m using this to test my trailer without having to move my trailer from its storage on the sude of my house. It works great!




by:

Although I am commenting on this product, I actually would like to comment on the following products. I purchased a brake system, tow bar, base plates and wire harness from etrailer. All of my orders were filled in a timely manner. When I reached out for technical assistance, the advisors were readily accessible. All of the products were installed by me. All of the products were very easy to install by using the video and instructions.




by:

Delivered as advertised. I use with my F350 and tow extension when traveling with my truck camper and towing a boat.




by:

This extension works well for me. I used it to extend the pigtail on my camper to the back so I could tow my aluminum boat behind the trailer. Has been working excellent for a year, shows no weathering/cracking. Mike




by:

So, I have a slide in camper on my F350, and to haul a boat trailer I needed a loooong extension for the trailer wiring hookup. I have a Super Hitch with a three foot extension that just barely pokes out from the bottom of my camper and the wiring extension from etrailer works just like a wiring extension is supposed to work. It makes my trailer lights light up as needed.
Oh, the Super Hitch and the super dooper heavy duty three foot extension came from etrailer as well ( they didn't let me know I'd need a wiring extension but I am guessing that they were guessing that I was not stupid) and are very well made. No problems at all hauling my beautiful, but kind of wide in the ass sailboat while the slide in camper is in the bed of the truck. I know this doesn't have much to do with a trailer wiring extension but really, what can you say about four (it's four right?) wires and a couple of connectors? It works as it should. The price was right. The delivery was exceptional. They might be faster than [other sites]. etrailer is (are?) my go to folks.




by:

This wiring harness was exactly what I needed to complete the relocation of my rear license plate on my motor home.


Comments
No issues and is still working after 1 year.
Paul L - 03/21/2020


by:

Great product!! Works wonderfully!




by:

I gave it a 4 star because I haven’t used it on the road. But it appears to be a quality made product.




by:

The etrailer.com website is excellent. It made my search for the product I needed very easy. Deliv;ery service to my front door was surprisingly prompt.


etrailer.com seems to offer everything related to trailers, rvs, etc. Prices are good. Service is excellent.

Thanks once again.




by:

Product is of superior quality, as is the service. In addition, tons of installation information is available on the website. All in all, a wonderful experience.


Comments
Thanks for the review on the Hopkins Wiring Extension, Pierre!!! Hopkins appreciates your business and is glad that we could help make this a wonderful experience for you.
Hopkins C from - 05/17/2017


by:

This "male to female" extension cable fit the connector at the TOAD end fine. It however did not fit the connector on the RV due to the rubber ring around the connectors. I was able to cut the ring off that end and it fit the RV connector fine then.




by:

Very good packing and quick shipping. All the items are good quality. It was and easy job. Good support from the video's which were well done and the free shipping helped make my choice to purchase from e trailer.




by:

Delivered quickly and worked as advertised. I am very happy with this product and will shop/order from etrailer again.




by:

Just as described- the extension fit perfectly and worked.


Comments
Thanks for the review on the Hopkins Wiring Extension, Ryan!! Hopkins appreciates your business.
Hopkins C from - 06/23/2017


by:

Just what I needed to extend the wires between my toad and motorhome.




by:

Very informational when orders my products, videos were very helpful. They were very prompt on getting my order out and delivered to me, thank you very much.




by:

Just as described and pictured. Item arrived quickly and was packaged very well. Works great. Hard to find item.


Comments
Thanks Matt for reviewing the Wiring Extension!! Hopkins appreciates your business.
Hopkins C from - 05/31/2017


by:

I was looking for a 6 ft. extension and found this. It works fine.




by:

Haven’t used this extension yet but looks well made. Glad to have it. Thanks again




by:

Perfect for my need. Good quality and durable. Works great.




by:

Exactly what I needed.


Comments
Thanks Scott for another great review and rating!! Hopkins appreciates your business.
Hopkins C from - 07/10/2017


by:

Just what the Dr ordered Nice




by:

IT WORKED WELL.




by:

Was what I expected, good product.



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35
Show More Reviews

See what our Experts say about this Hopkins Accessories and Parts

  • Can 4-Way of Tow Vehicle Bypass Fifth Wheel Trailer and Connect to Boat Trailer
    The 7-way and 4-way of your 2014 Ford F-150 will both be active so you can use an extension like the part # HM48235 (you might need a few) to go from the 4-way on the truck to the 4-way on the boat trailer. This extension is 120 inches long.
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  • Tow Bar Wiring Harness Recommendation For 2012 Ford F-150 With EcoBoost
    We do have the wiring kit you need for your 2012 Ford F-150. I recommend the Hopkins Custom Tail Light Wiring Kit, part # HM56000. This plugs into your F-150 wiring behind the tail lights and plugs into the RV. This will not affect the electrical system of your F-150 when not flat-towing. I also recommend an extension like part # HM48235. This extension is used to connect the F-150 to the RV. There are 5 items needed when you are flat-towing. You need base plates, a tow bar, safety...
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  • 4-Pole Wiring Extension for Tow Ready Tow Light Kit 73864
    If you want to add 10-feet of additional 4-pole wiring to the Tow Ready Magnetic Tow Lights # 73864 you can simply use a 4-pole extension cable. This will avoid the need to cut and splice the lights' wiring harness. Hopkins offer 10-foot extension # HM48235 that will plug right in. I suggest you apply some dielectric grease like # 11755 to the connection point and secure the two mating connectors with a zip tie.
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  • Gauge Wire Used for the Hopkins 4-Way # HM48235
    The Hopkins part # HM48235 has 16 gauge for wires. For a 4-way that has all 16 gauge wire you would want the Wesbar 4-Pole Flat Connector # W787264.
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  • Solution for Towing Trailer with 4-way Behind Trailer with 7-Way
    You could use the Curt 7-way to 4-way adapter part # C55384 to add in a 4-way basically behind your current 7-way and then use an extension like the part # HM48235 which is 12 feet long. You could use multiple extension if your camper is longer as needed.
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  • Recommended 4-Flat Wiring Harness for a 2003 Chevy Tahoe
    The Hopkins Custom Tail Light Wiring Kit item # HM56101 will fit a 2003 Chevy Tahoe. However, it is for when your Tahoe is being flat towed to control your tail lights by the RV. It will not allow your Tahoe to control trailer lights. To add a 4-way connector that can be used to control trailer lights you will need the Curt T-Connector Vehicle Wiring Harness for Factory Tow Package item # C55384. This harness will allow you to keep your Tahoe's 7-way connector as well. I have linked...
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  • Wiring Dome Light and 3rd Brake Light on Camper Shell With Ability to Easily Disconnect Wiring
    In order to wire this up the way you want, and also be able to disconnect it easily, I suggest using the Hopkins 4-Pole Flat Wiring Extension - 120" Long # HM48235 and the 3rd Brake Light Logic Module # PP20-702. I would start by cutting the Hopkins wiring extension in the middle (you can measure first and cut according to how much length you need for each end). The two different 4-way plug ends will be how you connect and disconnect the camper shell wiring from the vehicle. The idea...
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  • Can I Use A Light-Up Rectangular Trailer Hitch Receiver Cover With My Thule T2 Classic 4 Bike Rack
    I can definitely help you get an extension for the Light-Up Rectangular Trailer Hitch Receiver Cover - Brake, Tail, Turn - 2" Hitches, part # CR-007XL. I did some investigating and your Thule T2 Classic For 4 Bikes is 55" from the center of the hitch pin to the furthest edge of the bike rack. I do have an extension that will work, but it is 120" long. The Hopkins 4-Pole Flat Wiring Extension - 120" Long, part # HM48235, will definitely work, but you will have to zip tie the excess wiring....
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  • Installing A 4-Pole Trailer Connector To 5th Wheel Trailer
    The Curt RV Bumper Hitch, # C19101 is for RV bumper use only and fits 2" x 4" RV bumpers. This will require a customized wiring job as you will probably need to remove interior trim panels to access the taillight wiring of your 5th wheel to evaluate what is the best route. You can also make contact with the OEM and request guidance for best route. Once you find a way into the wiring, simply splice in the 4-Pole 60" Long Vehicle End (Includes 4 wire taps) Item # 18002. I do recommend...
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  • Length of Wiring on Pilot Brake and Tail Light Trailer Hitch Receiver Cover # CR-007A
    I checked with my contact at Pilot Automotive for the length of the wiring included on their Brake and Tail Light Trailer Hitch Receiver Cover # CR-007A. My contact advised that the length of the wiring itself is approximately 14-inches. If this is not long enough for your installation we offer 4-pole extensions such as 12-inch # HM48145 or 120-inch # HM48235, both from Hopkins.
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  • Longer 4-Way Harness Recommendation to Go Along with TLL9RK Kit
    The part # TLL9RK comes with a 25 foot long section of 4-way wiring. For an additional length of 10 feet of this wire with the correct connections you would want the part # HM48235. This will give you 35 feet of wire. For additional length you would want the part # HM47115 which will give you additional 4 feet.
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  • Availability of 8 Foot Long 4-Way Wiring Extension
    We do have 4-Way flat to 4-Way flat extension adapters available, however they do not feature a coiled wire like you mentioned in your question. I recommend taking a look at the Hopkins 4-Pole Flat Wiring Extension # HM48235. This extension measures 120 inches (10 feet) long, which is a bit longer than you need but is the closest option available. We also have a 6 foot extension loop with part # RM-300150-00. I have attached a couple short video demonstrations on these products that...
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  • 4-Way Prong Wiring Needed That is 8' Long
    If you are looking for just an extension then the Hopkins 4-Pole Flat Wiring Extension # HM48235 that you referenced is 10' long and will be exactly what you are needing. For a flat towing application we have the common 4-Way round connectors like part # HM47046 which is 8' long or for a 4-Way flat connector you would need both the part # RM-300150-00 (6') and the part # HM47004 (2'). Let me know if you are looking for something different and I can make a recommendation for you.
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  • 4-Pole Wiring Extension for Connecting Reese RAM Lighted Hitch Cover RP86531 on 2015 Ram
    If you want to install the Reese RAM Lighted hitch cover # RP86531 and its 16-inch-long 4-pole wiring harness is not quite long enough to reach your truck wiring you can simply use an extension. We have 4-pole extensions in many lengths, such as the 12-inch # HM48148, 24-inch # HM47004 and 48-inch # HM47114. We also have a 10-foot extension # HM48235 but this one does not have the special Hopkins Easy-Pull connectors found on the other extensions listed.
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  • Available Lengths of 4-Pole Trailer Wiring Extensions
    We do offer 4-pole extensions that can be used with the Tow Ready 7-Way to 5-Way/4-Way Trailer Adapter for Vehicles with Lamp-Out Sensors Towing Trailers with LEDs # TR20141. We have 4-pole extensions in many lengths including the 10-foot # HM48235, 4-foot # HM47115 and # HM47114, and 2-foot # HM47004.
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  • 4-Way Trailer Wiring Extension Recommendation to Allow Flat Towed Vehicle & Trailer Behind Vehicle
    What you'll need is a long 4-way extension spliced into the 4-way you have at the back of the RV. For that you'd want to use the part # HM48235 which is 120 inches long. You'd need to cut off the one end and then use quick splice connectors like # SWC501746-1 to connect to the RV wiring. This will allow the 4-way to operate the CR-V taillights and then you'd be able to route the jumper wire to the back of the CR-V where you can then plug it into your trailer.
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Info for this part was:

Employee Jameson C
Expert Research:
Jameson C
Employee Laura H
Written by:
Laura H
Employee Cole B
Installed by:
Cole B
Employee Alexander C
Updated by:
Alexander C

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