Videos are provided As a guide only. Refer To manufacturer
installation instructions And specs For complete information.
Adapter converts from 4 pole wiring on vehicle to 7 pole round plug. Additional wire leads for brake, power and accessory are 12" long.
Picture of the 7-way trailer connector
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.
Today were going to review part number 30717. This is the Tow Ready four-way to seven-way trailer wiring adapter. This adapter will convert from your four-way on your vehicle to a seven-way round plug. There are additional wire leads for brake, power and accessories which are 12 inches long. Basically what you would do is your vehicle would need a four-way on the back of the vehicle that you would plug this into to get you your four-way, and then you would have four extra wires here. Basically the white wire would connect to the vehicle frame for ground.
The black wire would be used to connect to the battery for 12 volt power. You connect it with a fuse or an in-line breaker. The yellow wire would be an auxiliary wire for 12 volt power, reverse lights or reverse lockout for trailer brakes. The blue wire would be used to connect to an output wire for brake controller. Lots of times this adapter is used when somebody is installing a brake controller on their vehicle because the brake controller does require a seven-way at the back of your vehicle.
If any of these wires, the features of thee wires are not required you can take them out and put them out of the way, but I would recommend to mount the ground wire. The length on this adapter is 12 inches long. That should do it for review on part number 30717.
Average Customer Rating: 4.8 out of 5 stars (238 Customer Reviews)
We only discovered this site recently and LOVE it. You don't have to know what you want, the questions lead you to exactly what you are needing. The item is of great quality, and as described. We can now swap from truck to jeep with our trailer, and simply without effort. We have found our new 'to go' store for our trailer shopping. Customer Service by the way, terrific, great communication, and very quick shipping. Really Great Experience, Highly recommend. 121873
this connector along with the short L bracket and the mount bracket- gave me a nice connector to my hitch. Though I used the short connector and did have to slightly bend it to allow the 4 to 7 pole connector to fit. If Id bought the long L bracket-- It could have worked-- but bending a little worked well. 68963
This is a great product . The price was $18.00 dollars cheaper than some I found online. I have a 2002 dodge ram 1500 pickup, this adapter will change the 4 pole( which is made on my truck) to a 7 pole( which is on the trailer I will be using). The product connected, and bolted up to my truck bumper very easy. E trailer is the best. 121019
Connected existing 4 pole from van to seven pole on my pop up camper. 90538
I was wanting to pull an enclosed trailer that has 7 pole plug in, with my vehicle that only has 4 pole plug in, without messing with the wires at this time, so I ordered the 4 pole to 7 pole adapter for this purpose. When item arrived I plugged adapter in, checked lights and on my way I went. all the extra wiring is there when I decide to add a brake controller. Now I can unplug the adapter and still use my 4 pole plug in. The item was well put together with tight wiring, price was reasonable, the shipping was smooth and the website is outstanding with plenty of instructions, wiring diagrams and the how to videos are a real plus on wiring up trailers. Thanks for an informative website and great product. 222496
wiring is great wished it would have been recieved by me in a more timely manner. had to barrow a truck to go on a camping trip. shame when i can order some thing from hong kong and it arrives faster. 136911
by: Mike M.08/26/2013
Just what I needed. 96904
by: kurt k08/06/2013
Has been working great since purchased and installed 3 months ago. Used for several different trailers and long distance trips. Easy to install. Had to be slightly creative with the attachment of the ground. Did not see a reason to have a ground on this portion since everything else is already grounded, however would not work without grounding to the frame. Only used the four way connection and taped remaining three back. Hope for good things to come with this produce. Highly recommend this product. 93648
by: Doug Kitzmiller06/05/2014
Works great. 134371
by: Marty Klemm06/24/2014
There was no splicing wires, it was plug-and-play, highly recommended, very easy installation 137304
by: Manuel D.07/05/2012
The product did not come fully fabricated. When I connected to the trailer I could not get any signal to transfer through. So I took the item apart and the 4 pin ground was not connected to the 7 way ground. This meant I didn't get a closed circuit when connected. After stripping the ground wires and connecting them the product worked great. I would suggest buying if you know how to modify in order to connect the ground wires 46844
by: Doug M.03/16/2015
I received this purchase and was installing it the next day. Luckily I read the other reviews and saw that I HAD to attach the white ground cord that was sticking out of the harness. Upon looking, I found the white wire that comes out out of the flat 4 plug isn't attached to anything thus requiring the ground to be attached to the vehicle. All in all, I was very satisfied with this purchase. 178592
by: Lyndz T07/10/2015
This is the first time I've ever ordered anything from this website and I am very happy with my purchase. We needed the item in a timely manner and therefore paid for 2nd day shipping. Unlike a lot of other websites, it actually came 2 days later! The adapter worked perfectly, was exactly as described, and is made with quality materials. I would highly recommend buying from etrailer.com. 210891
by: Don H07/03/2014
The adaptor was shipped almost immediately, but took longer to arrive than I had expected, if you need is quickly, ask for expedited shipping. The adaptor worked fine once I connected a seperate ground wire from the adaptor's white wire to a ground on my vehicle. Instructions/warning should be included noting that the 4-wire connectors ground does not pass through the adaptor. 138958
by: J-S Chenard04/16/2008
Good adapter Bought this adapter to convert from a 4-wire standard trailer plug to my Coleman pop-up camper 7-wire adapter. It works great! Just don't forget to attach the adapter's white ground wire to the vehicle frame, since the adapter does not make use of the ground return lead built into the 4-wire trailer plug. This is stated in the instructions, but easy to forget... 768
by: Tom Fye11/18/2013
Product exactly as described, and exactly what I needed. My van is wired with a 4 pin connector(harness with factory plug-in purchased from Etrailer some time ago), but I occasionally need to tow a trailer that has the 7 pin connector. This will work perfectly. I really appreciate the additional documentation and support from Etrailer, as well as the super-fast shipping. 107666
by: Steve S09/16/2014
This will be the 3rd connector that I have put on my van. Since I already had the flat 4 connector, installing this connector was a snap. The connector doesn't come with any mounting hardware and I needed to run to the hardware store and purchase 4 nuts and bolts to mount it. If this is your first mounting, you are probably also going to need to purchase a bracket. 151414
by: Al N.05/17/2015
I was surprised how fast the shipping was and the price for the product was very reasonable. I did not mind that there was no mounting plate for the adapter because I wanted something that would hook up to the camper when I need to use it and then take it off afterwards. I know I will be coming to etrailer for any other trailer or camper needs that may come up. 193891
by: Ted L.07/29/2013
I actually ordered a trailer hitch, T-wiring harness, and 7 pin connector. Everything arrived in great condition in just a few days. Shipping was VERY fast (due to telephone ordering) and exceeded my expectations. I am very happy with the products, shipping, arrival condition, and installation support. I will definitely recommend etrailer.com to other people. 92151
I havent used this towing, but as far as the install foes, I had the whole thing installed in about 45mins. It only took so long because my son was wanting to help and learn. Plus there was the brake controller install inside the cab. Other than that everything is plug and play. This is the easiest product I have put on my truck so far. 77197
by: Ryan D.06/29/2015
This product works well to adapt a 4 flat connector to a 7 pole connector. It's odd that is requires a second wire from the battery, though I'm sure there is a good reason for that. It's also odd that the ground wire (white) isn't actually connected to anything. It stops at the taped-off strain relief, and pulls out easily. 208160
by: Cory B10/01/2013
This 7 point harness wired right in with my T1 connector and is great for hooking up to my camper, very easy to install! 102166
by: Robert G12/28/2012
The adapter I ordered was excellent, the two brackets I ordered to use with the adapter were excellent, but the hose clamp to attach the bracket was a piece of junk, I spent an hour trying to get it to work and the auto parts guys couldn't get it to work either, so I bought one of theirs. wasted a lot of time on it. 62168
by: Dave Shannon02/21/2012
I needed something to enable my 4 pin equipped Wrangler to power the ligts/turnsignals when I move the 7 pin equipped 16' car hauler. Now I can have lights/turn signals when I move the empty trailer around after dropping the Jeep off of it, no longer have to try to maneuver the trailer around with a 38' motorhome. 32050
by: Ron E.06/29/2012
The 4 Pole to 7 Pole adapter is excellent. It is exactly what I was looking for and the quality is superb. It saves time and is simpler to use than having to figure out different color codes and splicing wires. It is a much cleaner look than having wires hanging all over the place. 46131
Great item, great price. Be aware that the white wire from the 4 way is not connected...it is cut about 4 inches long and hidden within the plastic harness covering. I believe that they expect grounding to be accomplished via the heavy white wire with solderless connector. 107240
by: Sid H.09/10/2013
Needed this for a new boat trailer that has surge brakes. Worked great for the tie-in needed to back-up lights to disable the trailer brakes while backing up. Easy process, even for me!! Recommend the mounting bracket too for a clean install. Thanks et!! 99261
by: Mark S.10/07/2014
Exactly what i was looking for. Easy install. Going from 4pole to 7pole was a breeze. I actually hardwired mine, the white ground in 4pole adapter is a dummy. So make sure you ground out the 7pole connector seprately or connect to am existing trailer ground. 154914
by: Susan Welsh05/16/2014
I bought this so that I could adapt the four pole connector coming from my jeep wrangler to a 7 pole coming from my new TB camper. Had it mounted on my bumper and it works just great. Expedient delivery of item and great customer service on the phone. 130991
by: Eric A..08/19/2011
I ordered about 5 products from you last week, mid week, and they were on my doorstep in perfect condition by Saturday! Nothing on backorder, and packed well into 2 boxes. Also, i appreciate the status emails and follow up. Thanks Etrailer, Great job! 22128
Great Product! This product is exactly what I have been looking for and for the price I jumped on it! The install could not have been easier and cant wait to try it out as often as possible. I will be recommending this product and company to everyone. 1002
by: V.H. CASON10/19/2015
IN THE PROCESS OF INSTALLING. VERY PLEASE WITH THE ADAPTER. I JUST HAVE TO GET THE CONTROLLER FOR MY 36ft DEISEL PUSHER. I WILL BE TOWING CHEV. UPLANDER HANDICAP VAN THE MUST BE ON A DOLLY. I WAS TOWING A 2002 PT CRUISER 5sp WITH A BRAKE BUDDY. 230361
by: John P.08/26/2012
Excellent quality and easy installation. Plus, the shipping was fast and reasonably priced. This was my first order from etrailer.com and I have been impressed from start to finish, including the emails keeping me informed of the status of my order. 53106
by: Nelson Marshall07/20/2011
This item was just what I was looking for. Your web site catalog made it easy to find. My FJCruser came with a flat 4 and my cargo trailer came with a blade 7 connector. Thank you for making it easy for me, the price was excellent. Nelson 19750
I looked all over for this device and was pleased to find it on etrailer. I took it apart to check for correct wiring (It was wired correctly) and was pleased to see how well put together the inside wiring was compared to the one I have now. 148414
by: Dave S.07/19/2014
Fits on the car neat and out of the way. 142194
by: Michael D.12/08/2010
Excellent Product This 7 way vehicle side trailer connector is outstanding. The quality is way better than I could find in a local store. As with all my orders from etrailer the product was great and the service was awesome! Thanks again! 3798
by: Mike Rush07/07/2012
I chose to use the OEM hitch and bezel for my Commander. I simply prefer the look. I used the T-One harness, and finished off the installation with 30717 end connector. It mounted prefectly to the factory hitch, and gives an OEM look. 47097
by: Cynthia R.07/15/2015
Arrived fast, just what we needed! 211931
You can't solve a problem any easier than eTrailer did for me. I needed to transport an empty trailer with my car and they had exactly what I needed at a great price. eTrailer has become my go to place for anything trailer related! 65935
by: JMac SD08/13/2013
I received an adapter cable that looks exactly like the one in the picture, and it works fine, so I'm a satisfied customer. Yes it's an adapter, so it does not have mounting hardware, if/when I want that I'll buy that. 94844
by: R. K.08/19/2012
Fit the mounting bracket purchased separately and allowed use of the quick wiring connector kit also purchased. Installation was quick and trouble free. Recommend shrink wrapping butt connectors to prevent corrosion. 52270
Beware!!!! There are no instructions to inform the buyer that the ground (white wire) must be connected to your cars frame in order for the lights on the trailer or rv to work. Other then that it's well built. 191084
by: S Bryant Adkins02/24/2014
Its exactly what I asked for. And delivered just in time.(Within the wk. ) and with a federal holiday. Now I can return the parts I bought to make my own. This adapter will save me a lot of trial and error. ;-) 117353
by: Mac J.07/23/2015
I had an adapter of the same brand as the one that I just bought but lost it. I tried unsuccessfully, to buy one locally, so went to etrailer as I have done frequently, and received my order in a few days. 213986
by: Chris K08/28/2013
My son's BSA trailers use 7 pole connectors and I always get recruited to pull one on camp-outs. This way I don;t have to rely on one of the Scout Masters to bring their convertor... Semper Fildelis 97368
by: Lou P03/28/2012
Not only does eTrailer send the correct part on the first try, it seems to show up about 10 minutes after I click on "buy". The customer service and attention to detail is off the hook. Thank you! 35348
by: Elaine L Williams04/08/2014
EXCELLENT !!! was exactly what I needed and it went in so easy... I have your web site in my favorites and will recommend it to anyone that I know... Thankx.. Elaine L Williams 124254
by: Randy Bryant11/04/2014
This was exactly the hook up I needed very fast shipping and about 10 dollars cheaper than local trailer store. Thanks etrailer will definitely come to you guy's for further needs. 159054
by: Kevin F.07/17/2013
It did the trick to make my four wire connect to a seven wire. It looks a little ugly with the extra wires not connected. I am not connecting trailer brakes with my application. 90123
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