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Adapter 4 Pole to 7 Pole Vehicle End Trailer Connector

Adapter 4 Pole to 7 Pole Vehicle End Trailer Connector

Item # 30717
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Adapter 4 Pole to 7 Pole Vehicle End Trailer Connector 4 Flat 30717
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Lowest Prices for the best wiring from Tow Ready. Adapter 4 Pole to 7 Pole Vehicle End Trailer Connector part number 30717 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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Tow Ready Wiring - 30717

  • Wiring Adapters
  • Single-Function Adapter
  • 7 Blade
  • Plug and Lead
  • Tow Ready
  • 0 - 5 Feet Long
  • 4 Flat


  • Adapter converts from 4 pole wiring on vehicle to 7 pole round plug
  • Additional wire leads for brake, power and accessory are 12" long
  • Mounting bracket (18138) is sold separately

Wiring diagram

Product detail


20321 Adapter 4 Pole to 7 Pole Vehicle End Trailer Connector




California residents: click here


Video of Adapter 4 Pole to 7 Pole Vehicle End Trailer Connector

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 - 30717 Review


Customer Reviews

Adapter 4 Pole to 7 Pole Vehicle End Trailer Connector - 30717

Average Customer Rating:  4.8 out of 5 stars   (500 Customer Reviews)


- 30717
by:

Connected existing 4 pole from van to seven pole on my pop up camper. 90538


Comments
Still happy with the connector. Traveled from Buffalo to Mt Rushmore then St.Louis and back this past summer. No problems.
Tim - 01/17/2015

8683
Comments
Did you also use a brake controller when,yiu went from 4 to,7
-- comment by: Denise - 03/14/2016

17110
Comments
@Denise, Yes I do have a brake controller installed.
-- comment by: Tim K - 03/15/2016

17120

- 30717
by:

A good item but I have not used it as of yet. 939744



- 30717
by:

Good quality 933171



- 30717
by:

Very simple and videos help locate where you need to be 928103



- 30717
by:

Fits and has worked great since I purchased a year ago. This is on my 2005 subaru outback. 922005



- 30717
by:

913369



- 30717
by:

Worked Great 909971



- 30717
by:

I live in the midwest where salty roads are murder on electrical components. I've used a couple of these connectors on different trailers and they hold up well. 909586



- 30717
by:

898586



- 30717
by:

Does what you'd expect it to do. Got the product fast. 897216



- 30717
by:

Worked Great just what I needed and you had it. 896270



- 30717
by:

Every time etrailer has provided me with the needed wiring! 893843



- 30717
by:

Looks like a quality product. Will know more in a few weeks when I try it out. Ordering was easy and delivery was sooner than promised. A great experience as it should be. Thank you. 883878



- 30717
by:

We selected this when a standard wiring kit would not work with our vehicle. My husband installed it himself although he had do some modifications for our vehicle. Seems like it would work great for a temporary trailer system but we were looking for something more conceled. Works great and we have had not difficulties with operation, just placemnt and looks. 881524



- 30717
by:

good 877053



- 30717
by:

872828



- 30717
by:

Did exactly what it was supposed to do, it worked. 869729



- 30717
by:

Brad was extremely helpful and courteous! Shipping was expedited and I received the product I ordered in a few days. Would definitely recommend etrailer to all my family and friends! 860940



- 30717
by:

Exactly what I ordered just not in time for trip had to make other arrangements. Max of three day delivery took 7 days. 859814



- 30717
by:

Worked as expected. Plastic is a little cheap. 859773



- 30717
by:

856391



- 30717
by:

Fit well on my vehicle and has performed well! 845383



- 30717
by:

Product was exactly as described. Hitch fit my Toyota Highlander without any modifications. The Installation videos which provided step by step instructions, were clear and concise. 845290



- 30717
by:

Prodigy P2 Great Product. Really enjoy the boost feature. Easy to program and all the installation info on your website was clear and easy to follow. Thanks 825469



- 30717
by:

Havent used it for trailer brakes yet, our small pop up has a 7 blade but harness for vehicle was a 4 pin. Easy to figure out, plug and play. 820014


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Ask the Experts about this Tow Ready Wiring

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  • Where to Find Brake Output Circuit of 2006 Ford F-150 with 4-Way
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  • Adding a 7-Way Trailer Connector and Brake Controller to a 2003 Toyota Tacoma with 4-Way Connector
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  • What Type of Trailer Wiring Would 2017 Jayco Sport 10SD Have On it
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  • Where Do the Extra Wires of the 4-Way to 7-Way Adapter 30717 Run To
    The additional wires of the 4-way to 7-way adapter # 30717 are white for ground, yellow for reverse light or auxiliary, blue for brake output, and black for 12 volt accessory. To activate each of these circuits only requires you to run the wire to the proper location. The blue wire runs to the blue wire of your brake controller. The black wire runs to the positive post through a circuit breaker like part # 9510. The yellow wire would need to tap into the power wire for the reverse lights,...
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  • Brake Controller and 7-Way Installation in 1994 Ford F-150
    To install a trailer brake controller like the Prodigy P2 # 90885 or P3 # 90195 along with a 7-way socket in your 1994 Ford F-150 the parts you'll need depend on how the truck was equipped from the factory. If it did not come with a factory 7-way then you will need our install kit # ETBC7 as well as a 4-pole wiring harness like # 118316. If you already have a 4-pole and 4-to-7 adapter part # 30717 then all you need is the controller and a wiring kit to connect everything, part # 5506....
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  • 4-Way to 7-Way Adapter Recommendation for Jeep Wrangler for Charging Trailer Battery
    The part # 30717 would be exactly what you would need to start with to install a 7-way on your Jeep Wrangler that has a 4-way. You would need to ground the white wire and then run the black wire up to the positive post of the battery using 10 gauge wire like part # 10-1-1 (sold by the foot) through a breaker like part # 9510. If parked for a short period of time your vehicle battery would not get drained but if you planned to park it over night and your trailer battery was pretty weak...
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  • How To Install a 7-Way Trailer Connector On a 2016 Honda Odyssey
    I have exactly what you need to add a 7-way trailer connector to a 2016 Honda Odyssey. For this, you'll need to start with a 4-way trailer connector and I recommend the T-One Vehicle Wiring Harness part # 118521 which is plug-n-play. Then you can convert this to a 7-way using the 7-Way RV Upgrade Kit for Trailer Brake Controller Installation part # ETBC7L. The 7-way is easy to install; just plug the two 4-ways in, ground the white wire, then run the black wire up to the battery but that's...
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  • Can I Use 7-Way Female Plug On My Trailer With 7-Way To 7-Way Male Adapter
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    We need to figure out why the trailer lights are not working. Use a circuit tester on your 4-way flat that you plugged into the back of the 4 to 7 pole adapter and test each function to make sure they are working correctly. If your 4-way is working properly, then you can plug it back in and test the corresponding poles inside the 7-way connector to be sure the adapter is working properly. If you need a circuit tester, we have part number 40376. Next, you would have to plug in the trailer...
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  • Options for Installing 7-Way Trailer Connector on 2004 Ford F150 Equipped with 4-Pole
    Although the # 30717 will work, I have a better suggestion for you. If your F150 is the New Body style, use part # 118247. If you have the Old Body style, use # 118242. Either connector will plug inline with your existing trailer connector, allowing you to retain the function of your existing 4-pole. Either kit includes the necessary fuses and relays to activate the remainder of the tow package circuits. Granted, this is a more expensive option, but it will be a very quick and easy plug-and-play...
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    Most likely what you would need is the part # 30717. This has a 4-way on one side of the connector that would get plugged into your Explorer and 7-way connector on the other side for connecting to your trailer. This 7-way is a 7-way blade style connector which is different from a 7-way round, but since the overall shape of the connector is round the terms get confused frequently. Since a 7-way round is typically found on heavy duty trailers, and RV style trailer almost always have a...
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  • Connection of Reverse Lockout Circuit to 7-Pole Vehicle End Trailer Connector
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    You would not be able to charge your battery through the wiring on your 4-way trailer connector. Since your truck has a 7-way connector, you could maintain the power to the battery but not charge it. To begin, you would need to cut off your 4-way trailer connector and install a 7-way connector on the trailer like the Optronics 7-way, part # A7WCB. You would need to connect the appropriate wires. White is ground, Yellow is left turn and brake, Green is right turn and brake, and Black...
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    I am sorry, we do not have a wiring diagram for this particular part, however we do have a Wiring FAQ that can help. I have included a link to it below. The white wire on the 4-pole connector is not active because the loose white wire overrides it. So the white wire coming off the adapter needs to be grounded. The 4-pole plug on the adapter needs to be plugged into the original 4-pole plug on the vehicle.
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  • Recommended Trailer Connector and Wiring to Add 7-Way Trailer Connector to 4-Way for Reverse Lights
    For your reverse lights on your boat trailer, I recommend you start with converting the 4-way you have into a 7-way trailer connector. I recommend the Adapter 4 Pole to 7 Pole Vehicle End Trailer Connector # 30717 for this. You will simply plug in your current 4-way and then connect the white wire with the ring terminal to your frame bare metal to metal using # FA1131822. Then you will connect the yellow wire of this adapter to the reverse light power at your tail light on one side of...
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