7-Way Round Pin to 4-Flat Adapter

7-Way Round Pin to 4-Flat Adapter

Item # 118709

lowest price pledge

Retail:$15.25

Our Price: $8.95

You Save: 41%
Wiring

Orders above $99 qualify for Free Shipping

Shipping Weight: 0.34 lbs

Quantity: 
In Stock, Ships Today
118709 - Plug Only Tow Ready Wiring Adapters
zoom in icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.
Please enter a valid email address.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

pop out icon replay 360 icon
horizontal rotate icon

Product Images

Customer Photos

Videos


  • Wiring Adapters
  • Single-Function Adapter
  • 7 Round
  • 4 Flat
  • Plug Only
  • Tow Ready
Lowest Prices for the best wiring from Tow Ready. 7-Way Round Pin to 4-Flat Adapter part number 118709 can be ordered online at etrailer.com or call 800-298-8924 for expert service.


  • All Info
  • Reviews (28)
  • Q & A (51)
  • Videos (1)
  • Photos
  • Why etrailer?

Tow Ready Wiring - 118709


Features:

  • Adapts a 7-way round pin to 4-flat connector



118709 Tow Ready 7-pin to 4-flat Adapter







Video of 7-Way Round Pin to 4-Flat Adapter


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




Video Transcript for Tow Ready Wiring - Wiring Adapters - 118709 Review

Today we're going to be taking a look at part number 118709. This is the Tow Ready 7-pole round pin to 4-pole flat wiring adapter. It's a nice compact design. It's going to promote quick and easy conversion of your 7-pole connector to your 4-pole flat connector. It's going to allow one vehicle to tow either campers or boat trailers without electrical brakes. Now it looks like this is going to allow us to connect your ground, left turn, right turn and stop circuits. Tow Ready makes this from a noncorrosive construction that's with the outer and inner components.

It's got the nice easy grip design as well that's going to allow for a quicker connection and disconnecting. We'll go ahead and take a measurement of the overall length just to see how compact it is. It looks like from edge-to-edge it's going to give us a measurement of about 4-1/4 of an inch. It is designed for vehicles with 7-pole round pin connectors. You can see here that the 7-pole round pin portion only has the necessary contacts installed for the 4-pole flat connector. A very simple operation and connection.

All you have to do is plug the 7-pole into place and then here on the back side of the plug you're going to be able to make the 4-way flat connection. That's going to do it for our review of part number 118709. This is the Tow Ready 7-pole round pin to 4-pole flat wiring adapter. .


Customer Reviews

7-Way Round Pin to 4-Flat Adapter - 118709

Average Customer Rating:  4.9 out of 5 stars   (28 Customer Reviews)


- 118709
by:

Just what I needed. 649683



- 118709
by:

Replaced broken 4 flat to 7 round adapter from refit 2-3 years ago on Brent grain trailers. Refit is a big improvement over factory wiring at the hitch. Replaced the straight wire with coiled cable from hitch to tractor. 291379



- 118709
by:

It's not about the product here, what's the difference between one adapter and the next? Not much, it's about the service and support from the AWESOME team here at etrailer. They make sure to let you know all the details of each product and even double checked that something I ordered would work for what I want....and it didn't so saved me time and trouble of returning it. Though that process is also great with them too. Thanks again for a great experience ETrailer!! Look forward to the next time. 198538



- 118709
by:

Works as advertised 583046



- 118709
by:

I used this product along with your Trailer End Connector - 4-Flat - Coiled cord - item #54000-026, on the lights on our Brent and Parker grain wagons. This has worked out great so far. We haven't had the problem of too much or too little cord for the trailer lights, which allows the cord to get pinched and cut or stretched and broke. I just need to come up with a method of securing the cord and plug to the trailer tongue when not in use. 103907



- 118709
by:

My GLE350 has a 7 pin plug but my Kendon m/c trailer has a 4 prong flat plug. This is an excellent solution! Heavy duty, extremely well made, and a great price! 463902



- 118709
by:

Received Within a few days I am very satisfied with the product. Excellent customer service as always. 668278



- 118709
by:

Awesome and easy to use 666175



- 118709
by:

I cant really review the products I have purchased, which consisted of various adapters for towing trailers, however I can tell you this place/site is amazing, they offer a wide array of products from A to Z, all under one roof, perfect for one stop shopping...their prices are very competitive and the service is outstanding! 611567



- 118709
by:

Super fast shipping, the web site is the best I've ever used!! You have all the options anyone would ever need at any price range. Will be reordering soon!! You make my life easier. Thanks 610403



- 118709
by:

Searched far and wide for this particular adapter for my Silverado. This was the only place I could find it. Works like a champ. Order was processed and shipped quickly. Highly recommend. 538932



- 118709
by:

This adapter fits a 7 way round pin power cord SAE j560 connector (like on a semi tractor) to a flat 4 plug for a light duty trailer. It is exactly what is described, and was shipped ASAP. Great job. 506608



- 118709
by:

JUST WHAT I NEEDED 456501



- 118709
by:

Easy install! This is definitely a job to do yourself! 417710



- 118709
by:

Excellent!!! Fast service and very hap py!!! 380166



- 118709
by:

as expected 296556



- 118709
by:

Quality products at a fair price 285119


Comments

Thank You, and it is working wonderfully.

Bill C - 11/02/2017

30418

- 118709
by:

Is a prefect fit. Delivered promptly. Works great! Thank you. 281582



- 118709
by:

Product showed up quickly. I haven't used it yet, but it's exactly what I wanted. 279402



- 118709
by:

product works as expected 252209



- 118709
by:

Excellent! Super fast shipping. 249048



- 118709
by:

Exactly what I wanted fits great works and thick strong plastic 221512



- 118709
by:

Good product, quick shipping, good price! Thank you 203484



- 118709
by:

Product is very durable. I ordered this product with a 3 day delivery. It showed up in exactly 3 days. Very happy with etrailer. 165578



- 118709
by:

Great part. Took a couple days to ship, but price was great and quality great as well. 152994



- 118709
by:

Arrived promptly. Works great! 114271



- 118709
by:

Great customer service. Charlene C informed me that what I'd ordered would be delayed and offered an "in-stock" substitution option. Actually was cheaper and upon delivery found it to be equal to my original choice. I am very happy with the service and product. 96356



- 118709
by:

Product was just as it was advertised and the service was better than expected! Super fast shipping and vendor stayed in email contact from the time the item was ordered until it was received. I plan on using etrailer for future orders for my truck needs. 61448


31
31

Ask the Experts about this Tow Ready Wiring
Do you have a question about this Wiring?


  • Wiring US 4-Way Trailer Connector to Trailer with European 7-Way Trailer Wiring
  • Since you want to go from a 4-way on your vehicle to a trailer with a European 7 flat, you will simply be able to use the Tow Ready Vehicle to Vehicle Tail Light Converter # 118158 or Curt # C56196 if your trailer has LED lights. This will take the combined stop and turn signal wires on your 4-way and separate them for your European 7-way. You will connect the 4-way color-for-color and the running light will run around this adapter versus through it, and the ground will need to be spliced...
    view full answer...

  • Can a European 7-Way Trailer Connector be Converted to a U.S. 4-Way
  • You have 2 options. First you can convert the Escalade wiring harness, after installed, to match the trailer. Or you can convert the trailer connector to match the vehicle connector, once it is installed. The easiest thing to do would be to convert the trailer but there may be certain lights and functions required in Europe that are not required in the U.S. I will try to cover both ways for you but there is no simple adapter for either method. To convert the vehicle, first you will...
    view full answer...

  • Light Kit to Flat Tow a 2015 Ford F-150 Behind a Motor Home
  • For your 2015 Ford F-150 you can use 4-diode kit # RM-154. This is a more permanent installation that does require tapping into the vehicle wiring. For a more temporary solution you could use a magnetic kit such as # C-ATL20A but you would need to also use tow light partners # TLP01 because of the aluminum used in the 2015 Ford F-150s.
    view full answer...

  • Will the Tow Ready 7 Round Pin Adapter Allow My Freightliner Pull My Utility Trailer With a 4-Way
  • If the plug on your Freightliner is a traditional vehicle side 7-way round pin connector like the one in the picture provided, and it is pinned the same then the Tow Ready 7 way to 4-Flay adapter part # 118709 would work out great. If you use this connector then no additional diodes would be needed.
    view full answer...

  • Parts Needed to Flat Tow a 2016 Ford F-150 King Ranch with LED Tail Lights Behind an RV
  • For tow bar wiring for your 2016 Ford F-150 I recommend going with a magnetic kit # C-ATL20A. The issue is that the diode kits and converters that go with them are not rated for use with LED tail lights. The best option then is going to be a magnetic kit. And having a wireless system means you won't have to run any wires or worry about complicated installations on the truck. Since the lights are magnetic you may need to use tow light partners # TLP01 in the windows of the truck if the...
    view full answer...

  • Wiring US 4-Pole Trailer Connector to For Trailer with European 7-way
  • I am not aware of the existence of an adapter, but one could be easily constructed. You will need to find a vehicle-side socket to receive the plug from your trailer. We do not carry them, so you will need to obtain one locally. You will also need a vehicle to vehicle taillight converter like part # 118158 and a trailer side 4-pole like part # 18004. You would then wire the converter as shown in the diagram I provided. Using this adapter will separate the turn signal back out so that...
    view full answer...

  • Can a European 7-Way Trailer Connector be Converted to a U.S. 4-Way
  • You have 2 options. First you can convert the Ford Focus wiring harness, after installed, to match the trailer. Or you can convert the trailer connector to match the vehicle connector, once it is installed. The easiest thing to do would be to convert the trailer but there may be certain lights and functions required in Europe that are not required in the U.S. I will try to cover both ways for you but there is no simple adapter for either method. To convert the vehicle, first you will...
    view full answer...

  • Adapter Availability for Converting European Trailer Wiring for Use with 4-Pole U.S. Connector
  • We do offer a range of wiring adapters for U.S. standard trailer wiring to convert from, for example, 7-way to 4-way, 5-way or 6-way wiring. These various connector types are shown in the linked article on trailer wiring. However, European trailer wiring does not combine multiple functions on one wire like U.S. wiring. U.S. 4-pole trailer connectors combine stop and turn signals on one wire; the yellow wire carries stop and left turn; the green wire carries stop and right turn. Since...
    view full answer...

  • Can Hopkins Smart Hitch Camera be Used With 4-Way?
  • You would not be able to use the 7-Way Round Pin to 4-Flat Adapter # 118709 to install the Hopkins Smart Hitch Backup Camera and Hitch Aligner System # HM50002. This camera and aligner requires a vehicle to have either a factory tow package or to be hardwired into the vehicle. I've added a link to the installation instructions for you to take a look at as well as a link to a video review of this system.
    view full answer...

  • European 7-Pin to US 4-Way Flat Trailer Wiring Adapter for a Land Rover Defender
  • There is a specific adapter for Land Rovers that have that European 7-Way connector # 118710. One end plugs into the vehicle 7-Way and the other end has a connector for a 4-Way flat connector used on US trailers.
    view full answer...

  • Can a European 7-Way Trailer Connector be Converted to a U.S. 4-Way
  • No. The 7-Way end in the # 118709 adapter is made for the North American style of 7-Way round pins. A European 7-Way, see picture, has separate turn signals and brake lights and a circuit for fog lamps. The tail lights are also separate. You would need to fabricate a special adapter to get the 2 to work together. I would need to know which end has the European 7-Way, the vehicle or the trailer. It would also require a semi-permanent change to the connector on the vehicle or possibly...
    view full answer...

  • Changing a US Style 7-Way Vehicle Connector to a European Style 7-Way Connector
  • The European 7-Way does the same thing that the US 4-Way does. There isn't an adapter available because the European 7-Way has separate circuits for nearly every function on each side of the trailer. The US style 4 or 7-Way has combined brake lights and turn signals. What you will have to do is change over the US style 7-Way to a European one. You will need 1 European style vehicle side 7-Way and one special converter that separates the combined signals to separate ones. You will...
    view full answer...

  • 7-Way European Socket to US 4 Way Recommendation
  • Bascially, there is no easy way to convert the European 7-Way to a US 4-Way. We do not carry any kind of adapter that you could use. You are left with 2 options. First, you would install a separate wiring harness which would be the easiest. Or, you could attempt to fabricate an adapter. You would need to use a converter, # RM-732. The red wire on the input side would attach to the brake light wire on the vehicle wiring. The white wire grounds to the frame. The yellow wire will attach...
    view full answer...

  • Splicing in a 7-Way Trailer Connector to Trailer Tail Light Kit # TL5RK
  • The issue is that on the 7-Way you bought the wire colors and functions do not match the 4-Way in the light kit. On the 7-Way it has the following wire colors and functions: White is ground Red is left turn/brake lights and will connect to the yellow wire on the light kit Brown is right turn and brake and will connect to the green wire on the light kit Green is tail lights and will connect to the brown wire on the light kit Blue is for trailer brakes Black is for 12 volt power Yellow...
    view full answer...

  • Is there an Adapter that will Convert a 4-way Round Trailer Connector to a 4-way Flat Vehicle End
  • I have checked the adapters that we currently carry, and we do not have an adapter that will fit the configuration that you specified. You could create your own adapter, and it would be composed of the Pollack # PK11410 and the Hopkins Endurance 4-way Flat Trailer connector # HM48110. You would just wire the Hopkins 4-way flat to the Pollack 4-way round connection point. This will create an adapter that will connect the 4-way round on your 1972 trailer with a 4-way flat vehicle connection...
    view full answer...

  • Lighting to Tow a 2015 Ford Fiesta ST Behind a Motor Home
  • Trailer wiring harness # 56047 is for a 2015 Ford Fiesta sedan. But the ST is a hatchback so the harness will not fit. For a hatchback you would use # 118641. Another issue is that you would not use this type of harness to tow the Fiesta behind the motor home. This harness is for a Fiesta to tow a trailer behind it. It does not work in reverse so you need a different lighting solution. Since there aren't any plug in tow bar wiring harnesses for the 2015 Ford Fiesta ST at this time,...
    view full answer...

  • Can a 12 Volt Battery on a Dump Trailer be Charged from a 7-Way Trailer Connector
  • The 12 volt circuit on most 7-Way trailer connectors is fused at 30 amps/12 volts. At best it can provide a maintenance charge to a trailer mounted battery. But it cannot charge up a battery; at least not one that is the size of the battery used to operate functions on a dump trailer. Most vehicle alternators are not strong enough and the tow package wiring not large enough for enough amperage to get back to the battery. I recommend using an AC charger when you can to charge and recondition...
    view full answer...

  • Are Diodes Needed If Vehicle to Vehicle Tail Light Converter 118158 Is Used to Tow European Trailer
  • You will not necessarily need diodes because the back feeding would only be slight and should not be enough to cause any problems. But if you wanted you can still use diodes, # RM-690, one on the right turn/brake and one on the left turn/brake circuits on harness 18252. Basically, they will go before the # 118158 harness on the green and yellow wires.
    view full answer...

  • Best Location to Wire a Tail Light Isolating Diode System
  • The diodes in the Roadmaster 6-diode wiring kit # 154-792-118158 will be installed after the converter # 118158 (included in the Roadmaster 6-diode wiring kit) when using this kit. The easiest place to install the diodes is right behind the tail light assemblies where the wiring is easily accessible. I included a couple helpful articles, video review and a picture for you to view.
    view full answer...

  • Is a European 13-Way to US 4-Way Adapter Available
  • Unfortunately we do not have an adapter to go from a European 13-way trailer connector to a U.S. style 4-way trailer connector. European trailers typically have separate brake light and turn signal circuits, but U.S. trailers use a combined wiring system that use one wire for the turn signals and brake lights. You could make an adapter using a universal 4-way flat tail light converter like part # 119130, but you would need to find a European trailer side 13-way connector that can be...
    view full answer...

  • 7-Way Round to 4-Way Flat Adapter Recommendation
  • As long as the 7-way round you have on your trailer is wired so that the stop/turn circuits are on the same circuits the # 118709 would be perfect for what you are trying to do. If the 7-way you have is a Euro style that has separate taillight circuits then you would need to make an adapter, but I doubt this is this case. If your 7-way is wired like the diagram I attached you would be good to go.
    view full answer...

  • Converting a Trailer with 12 volt Lights to 24 volt Lights for Compatibility with a Euro Spec Truck
  • I think your only real option would be to replace the trailer lights on your trailer with lights that are compatible with 24 volt systems since there isn't an adapter available that we offer that would work for converting your 24 volt system to work with a 12 volt lighting system. Right now, we have a few select 24 volt tail lights. We have # STL23R24B and # STL90R24B. For turn/marker lights we have # STL90A24B and # STL23A24B. And for reverse lights we have # BUL23C24B and # BUL90C24B.
    view full answer...

  • Wiring US 4-Pole Trailer Connector 2014 Ford F150 to For Trailer with European 7-way
  • I am not aware of the existence of an adapter, but one could be easily constructed. You will need to find a vehicle-side socket to receive the plug from your trailer. We do not carry them, so you will need to obtain one locally. You will also need a vehicle to vehicle taillight converter like part # 118158 and a trailer side 4-pole like part # 18004. You would then wire the converter as shown in the diagram I provided. Using this adapter will separate the turn signal back out so that...
    view full answer...

  • Using Separate Brake Lights and Turn Signals on a European Trailer with US Chevy Silverado
  • The issue is that trailers in the US use a combined lighting system where the brake lights and turn signals are on the same circuit. European trailers have a separate circuit for each function. The wiring harnesses for US spec vehicles will take the separate brake light and turn signals and combine them for use with a US trailer. If you plug in a European trailer then it would function like a US trailer. To fix this issue you can install a converter on the European trailer. Converter...
    view full answer...

  • Flat Towing Wiring Options for 2014 Ford F-150 Platinum
  • Strictly speaking, both you and your friend are correct. It just depends on which type of toad wiring harness is used. The link at right will show you all flat-towing wiring kits for the 2014 Ford F-150 Platinum. These include a custom-fit option from Hopkins, part # HM56000. This kit installs without cutting and splicing by plugging in to the F-150 tail lights and includes integrated diodes to prevent feedback. This operates as a combined lighting system.
    view full answer...

  • 7-Way to 4-Way Adapter Recommendations
  • If you have a blade style 7-way you would need the part # PK12716 to convert it to a 4-way. If instead you have the less common 7-way round you would want the part # 118709.
    view full answer...

  • Trailer Wiring Harness Recommendation for a 2014 Volkswagen Golf TDI
  • The wiring harness you would need for your 2014 Volkswagen Golf TDI would be the Tow Ready wiring harness part # 119190KIT. This is a universal install harness that will require you to tap into the turn signal wiring to install and will require you to run a wire up to the vehicle battery. I attached an install video and a help article that details how to find the best way to route the power wire up to the battery. To access the taillight wiring you will need to remove the interior...
    view full answer...

  • Recommended Adapter To connect 4-way Flat Trailer Connector To 7-way Round Connector On 2002 Volvo
  • If you have a 7-way round pin connector on your Volvo, the adapter you can use is part # 118709. If the vehicle connector is round but has blade connectors and you want to attach a 4-way flat connector on the trailer you need part # PK12716.
    view full answer...


Do you have a question about this Wiring?




  • Why etrailer.com?

    At etrailer.com we guarantee:

  • Highest quality wiring for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate wiring information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Satisfaction Guarantee
    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Photos by:
Theodore B
Expert Research:
Michael L
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
John H
Expert Research:
Adam R
Updated by:
Laura H
Expert Research:
Rachael H
Expert Research:
Jeffrey L

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.