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Adapter 4 Pole to 6 Pole

Adapter 4 Pole to 6 Pole

Item # 30637

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Tow Ready Wiring Adapters - 30637
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  • Wiring Adapters
  • Single-Function Adapter
  • 4 Flat
  • 6 Round
  • Plug and Lead
  • Tow Ready
Tow Ready adapter converts your 4-pole wiring harness on your vehicle to 6-pole round connector. Lowest Prices for the best wiring from Tow Ready. Adapter 4 Pole to 6 Pole part number 30637 can be ordered online at etrailer.com or call 800-298-8924 for expert service.


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Tow Ready Wiring - 30637

Tow Ready adapter converts your 4-pole wiring harness on your vehicle to 6-pole round connector.


Adapter converts your 4 pole wiring on vehicle to 6 pole round connector. Additional leads for brake (blue) and power (black) can be connected to allow for electric brakes and accessories.


Wiring Diagram



20320 Adapter 4 Pole to 6 Pole






California residents: click here


Video of Adapter 4 Pole to 6 Pole


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 - 30637 Review

Today we're going to review part number 30637. This is the Tow ready 4-Way Flat to 6-Way Round Pin Connector Adapter. Now, this adapter will convert your 4-pole wiring on your tow vehicle to a 6-hole round connector on your trailer. There are additional leads for the brake and for the power and also the white is for the ground. These can be connected to allow for electric brakes and accessories. Now, if you do have a, the 4-way right here would plug into the 4-way on your vehicle. Now, if the trailer has a 6-way and you just wanting to use the lighting functions, you can just plug in this 4-way and it would give you the lighting function.

You will still have to install this white wire with the eyelet to a big clean ground to get those functions to work. But, if you're wanting to use, I had an electric brake controller or any other 12-volt accessories, you do need to install these other 2 wires. Basically, what you would do is after you take the white wire and install it to a good clean ground, go to the blue wire. The blue wire is for the electric brakes. What you need to do, this would be routed under the vehicle using extra wire and then attach it to the blue wire on the brake controller. The black wire would be for 12-volt power.

This would have to be attached to a black wire and then routed under the vehicle and attached to the positive battery termining 00:01:24 with a 40-amp circuit breaker. Once you have that all hooked up, then you could plug in the 6-way on your trailer and get all the lighting operations, electric brakes, and still have 12-volt power. Length on this, to give you an idea of the measurement, lengthwise from the end of the 4-way to this about 15 inches in length. That should do it for the review on part number 30637. The Tow Ready 4-Way Flat to 6-Way Round Pin Connector Adapter. .


Customer Reviews

Adapter 4 Pole to 6 Pole - 30637

Average Customer Rating:  4.8 out of 5 stars   (61 Customer Reviews)

Tow Ready adapter converts your 4-pole wiring harness on your vehicle to 6-pole round connector.

- 30637
by:

The description online was very accurate and easy to purchase. The product we bought was exactly what we needed and received it in just a couple of days. I would diffinately recommend people to shop at etrailer. 281486



- 30637
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GREAT PRODUCT AND THANKYOU FOR A SPEEDY DELIVERY, SUCH A NICE SURPRISE I LOVE YOUR SITE AND WILL DO MORE BUSINESS WITH YOU. THANKYOU SO MUCH. RONNIE. 580403



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Durable / Easy Installation 568564



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should do the trick 395692



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Great price real easy to order 345486



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Very nice to deal with you folks. You site is carefully put together. Very clear formation and it was easy to make a choice. It was the correct part and did the job. I think you guys decided from the beginning to be the best at handling tedious problems with trailers and their saftey. Thanks for your good work 371681


Comments

It was working great when I sold the trailer last Fall. Very good product

William C - 04/25/2018

37686

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I ordered SEVERAL products. As usual, they arrived in a timely manner, and well-packed. By ordering a Four-Flat to a Six-Round Adapter, I saved myself a lot of time trying to make one myself out of separate components. I needed this adapter to utilize my trailers on vehicles that Don't have Six-Round lighting connectors. This adapter is very well made, and functions perfectly! I also ordered some Four-Flat connectors so I can use rental trailers of a larger capacity or "Car haulers" that don't have Six-Round connections. ALL products purchased are excellent quality. Thank You E-Trailer! 340916


Comments

All referenced products are still working perfectly. Thank You etrailer!

Sgt. L - 02/14/2018

34697

- 30637
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This product work perfectly. We just got a new camper and old one had 4 plug and the new one is 6 plug. This workout great. 649776



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great product , just what I needed at a good price 638554



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Just what I need! Great product. Great video of product description really helped. 582883



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As a small business owner I am extremely pleased with the service and follow up that you provide. Making yourself available to your customers is very important. I also find the how to videos very helpful. I will highly recommend you to anyone who is in need of your products. 567315



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Have received but have not installed. Quality of product is very good. 442761


Comments

Works great

Doug W - 10/14/2018

44628

- 30637
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Fits perfectly on my 2017 Corolla 433340



- 30637
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Installed on Blu Ox tow bar yesterday. & plugged in to tow daddy wiring kit perfectly. 433328



- 30637
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Product has worked great, seems to be designed and manufactured very well. No issues at all. Would recommend to others. 431109



- 30637
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Correct product. Cheap delivery and I got it in two days. Super easy to assemble. etrailer is awesome, 423429



- 30637
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Excellent! After receipt of product, took less than 15 minutes to install on my truck & solved my problem. 403962



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I've used this before, It gets the job done.... 400899



- 30637
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I have several vehicles that required the installation of this adapter. I have had at lease two of them installed and in each instance these were quality items that fit perfectly and performed well. 383408



- 30637
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Customer service at E trailer Is excellent I dealt with Lisa D she was extremely helpful and answered all my questions !!! 376043



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First time purchaser. Very prompt service by following up via email, and quick shipping. Product came packaged very well and in excellent condition. I will be cataloging this website for future purchases. Have already recommended this business to friends. 368720



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All of it was high quality and fairly priced. It's already installed, It would be nice to have a bracket option to mount the six pin socket to the hitch. I ran a hole on the passenger side flat metal bracket. 348206



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I was so pleased with etrailer.com! My wife and I bought a camper and had no way to hook up the lights. Our product was delivered quickly so that I can go pick up our camper. 338059



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Very good quality & arrived in a very timely manner. Hard adapter to find, 320499



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Product was as described and received earlier than expected 317288



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Simple, affordable adapter... made life SO easy! 304895



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Great product. Fast. Shipping 283309



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Excellent product and blazing fast ship ping. 282893



- 30637
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Just what I wanted. 281560



- 30637
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This item will be used to connect the lights/brake between our motor home and 2016 GMC Sierra 1500. Received the item fast from etrailer. Would recommend etrailer to family and friends. 248798


Comments

Made for an easy connection

Edward P - 05/06/2017

23684

- 30637
by:

I purchased this adapter to enable me to connect my vintage tent trailer. The wiring kit that came for my car had a four pin flat connector so that worked perfectly with this adapter. I just had to run the 12 low-power and I was good. The adapter appeared to be well constructed and everything so far tests out fine. 236464



- 30637
by:

Your site was the only one that showed the cable harness that I was looking for. Thanks and the shipping was fast. 227464



- 30637
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Build is of good quality. Got it shipped for less $5 less than in town I could get it. Does the job require. , 196777



- 30637
by:

Perfect for my Dodge. I tore a rats nest out and did a nice clean installation. I ought the 4->6 pole adapter and spliced in the battery and brake lines to the provided butt splices. Very easy! Whole job took 45 minutes including getting the bleeding stopped where I banged my head on the frame rail of the truck. 191044



- 30637
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Got exactly what I needed in a very timely manner. Will definitely be a return customer. 181766



- 30637
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Quality products and reasonable prices with a ship out time that is second to none. Thanks for the excellent service. 163769



- 30637
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Just as described, 161795



- 30637
by:

Just what I needed 160194



- 30637
by:

Works great. Delivery was quick and product was just the ticket. 154472



- 30637
by:

I purchased this along with factory wiring connector for my Chevy K10- that was a breeze to click into the factory harness. I was having issues with the wiring job from before, i cam across Etrailer and found these quick install harness to fit my needs. it took less than 15 minutes to click in to space. i mentioned before, Cheaper than the local Trailer shop and no splicing. Good quality, on time delivery, easy to install. 148960


Comments

GOOD NO PROBLEMS. EASY

Brad S - 09/06/2015

14773

- 30637
by:

I was told to check out etrailer for all my needs anything for my trailer and like WOW!!!! They actually had what I needed and shipping was fast. It works perfect with NO issues at all. Thanks guys for your help on this and I will definitely order again from you. 136748



- 30637
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High quality works great. 134138



- 30637
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I had to give you this praise too! Great website! My son and I have both ordered recently! Fast, cheap shipping! Products worked AWESOME!!! Thanks! The wiring harness for his Dakota was awesome. The adaptor was even easier! 129231



- 30637
by:

Great product to connect to 4 pole flat from Honda Pilot 107886



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Easy to install. Works as expected. 91267



- 30637
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Product serve it's intended purpose exactly as planned. Very pleased with the product and especially Etrailers service. Excellent communication. 80428



- 30637
by:

Thank you for your prompt delivery. It was exactly what we needed. 80307



- 30637
by:

Got this to go on my jeep. Installed clean and discreet. Definitely low profile and guarenteed to stay out of harms way while wheeling in our JK! 73949



- 30637
by:

I used this with a Ford Ranger adapter. It hooked right up. I didn't see that it didn't have the bracket to attach to my pickup. I bought one at an auto parts store. It was easy to attach and works. The price was the cheepest I found, shipping was great. Etrailer is great to work with. I will shop here again. 71284



- 30637
by:

I SHOULD HAVE ORDERED A BRACKET TO HOLD IT BUT THE PRODUCT IS WHAT I WANTED AND LOOKS GOOD. I AM MAKING A BRACKET TO HOLD IT 67268


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


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  • For your 2018 Toyota Sienna I do recommend installing a 4-Way harness and then going with a 4-Way to 6-Way adapter for when it's time to tow the pop-up camper. This will be the easiest and most reliable method for your vehicle. As you mentioned in your question your Sienna has a separate wiring system, which means the brake and turn signals are sent along separate wires. Because of this a powered converter is needed to not only safeguard the vehicle's wiring and provide enough power...
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  • In 4-pole flat type trailer wiring such as part # 002220 the tail light circuit (also known as the running light circuit) is usually assigned to the brown wire which connects to the pin next to the ground pin. You can see this in the photo I linked for you. This type of wiring format does not support an additional circuit for +12V auxiliary power as might be needed to top off a trailer-mounted battery or to operate a jack or winch on the trailer. Other wiring formats with additional...
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  • Adapter to Connect 4-Way on Vehicle to 6-Way Round on Trailer
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  • We actually have a pre-made 4-Way to 6-Way round adapter that you could use if you wanted to, # 30637. For this you would plug in the 4-Way on the vehicle to the 4-Way on the adapter, ground the white wire to the frame of the vehicle, and tape up the other 2 wires on the adapter if those functions are not needed (if you just needed lighting functions). To make your own you would need a 4-Way trailer end connector, like # HM48110, and wire the blunt cut bare wire ends to the 6-Way round...
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  • Troubleshooting Brake Light on Trailer Towed by 1998 H-D Road King and 2003 Ford Crown Victoria
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  • Mounting Hole Dimensions of 4 Pole to 6 Pole Adapter
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Info for this part was:

Expert Research:
Michael L
Expert Research:
Robert G
Expert Research:
Michael H
Expert Research:
Jeff D
Expert Research:
Jameson C
Expert Research:
Adam R
Updated by:
Laura H
Expert Research:
Lori W
Expert Research:
Jeffrey L
Updated by:
Alexander C

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