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Wiring > Wiring Adapters > Single-Function Adapter > 4 Flat > 7 Blade > Plug and Lead > 1 Foot Long > Tow Ready


Adapter 4 Pole to 7 Pole Vehicle End Trailer Connector

Tow Ready Wiring

ratingratingratingratingrating (132 reviews)


Code:   30717

Retail:$24.48

Price:$17.45


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Shipping Weight: 2 pounds

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Tow Ready Wiring - 30717

4-Way to 7-Way Trailer Wiring Adapter

Adapter converts from 4 pole wiring on vehicle to 7 pole round plug. Additional wire leads for brake, power and accessory are 12" long.

Recommended
Wiring Harness Mount Brackets





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.

Video Demo Tow Ready Wiring 30717
Tow Ready Wiring 30717 Review
Video install trailer wiring 1998 chevrolet suburban 30717
Trailer Wiring Harness Adapter Installation - 1998 Chevrolet Suburban

Video Transcript for Tow Ready Wiring 30717 Review

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.


Customer Reviews

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

Average Customer Rating:  ratingratingratingratingrating4.8 out of 5 stars   (132 Customer Reviews)




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ratingratingratingratingrating by: Cory B10/01/2013

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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



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ratingratingratingratingrating by: roberto03/05/2013

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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



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ratingratingratingratingrating by: Nelson Marshall07/20/2011

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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. Nelson19750



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ratingratingratingratingrating by: Michael D.12/08/2010

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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



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ratingratingratingratingrating by: J-S Chenard04/16/2008

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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



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ratingratingratingratingrating by: Dave Shannon02/21/2012

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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



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ratingratingratingratingrating by: Eric A..08/19/2011

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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



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ratingratingratingratingrating by: MTKruger03/24/2014

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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



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ratingratingratingratingrating by: Rics4903/17/2014

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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



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ratingratingratingratingrating by: S Bryant Adkins02/24/2014

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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



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ratingratingratingratingrating by: Tom Fye11/18/2013

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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



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ratingratingratingratingrating by: Paskentaman11/13/2013

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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



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ratingratingratingratingrating by: Sid H.09/10/2013

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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



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ratingratingratingratingrating by: Chris K08/28/2013

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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



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ratingratingratingratingrating by: JMac SD08/13/2013

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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



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ratingratingratingratingrating by: kurt k08/06/2013

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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



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ratingratingratingratingrating by: Ted L.07/29/2013

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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



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ratingratingratingratingrating by: Jay04/22/2013

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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



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ratingratingratingratingrating by: Michael02/12/2013

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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



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ratingratingratingratingrating by: Robert G12/28/2012

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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



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ratingratingratingratingrating by: John P.08/26/2012

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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



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ratingratingratingratingrating by: Ron E.06/29/2012

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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



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ratingratingratingratingrating by: Patrick06/25/2008

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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



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ratingratingratingratingrating by: Manuel D.07/05/2012

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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 wires46844



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ratingratingratingratingrating by: Greg P.08/24/2011

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Shipped super fast. Everything was as advertised. Installed like a dream after watching the online video. Etrailer.com is the only place I'll buy trailer parts!22614



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ratingratingratingratingrating by: grumpy5008/19/2011

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worked as stated 22236



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ratingratingratingratingrating by: Wm08/14/2011

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Good product great service. 21873



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ratingratingratingratingrating by: Tim F.08/03/2011

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Great accessory to have....easy to inst all.21049



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ratingratingratingratingrating by: Steve E.08/01/2011

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Just what I needed,fast shipping,good follow-up,go company..will for sure shop with these guys again.Thanks!!20788



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ratingratingratingratingrating by: Brad P07/14/2011

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Great product. 19448



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ratingratingratingratingrating by: Robert C.07/07/2011

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Awesome Product. I was very easy to ins tall.18834



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ratingratingratingratingrating by: Gerardo04/01/2011

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Great product! 10876



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ratingratingratingratingrating by: Shawn12/17/2010

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Excellent Service/Product Worked Perfectly !!! Fast shipping !!! Graet price4298



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ratingratingratingratingrating by: Lee E.12/16/2010

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Excellent Service Product was as described. Service was very quick and very much appreciated4224



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ratingratingratingratingrating by: chick08/04/2008

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great line of products.... Hard to find item, glad you had it.1132



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ratingratingratingratingrating by: Jason S.10/06/2012

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Quick way to mount an RV socket on your vehicle. Product is done nicely except for not being sealed with epoxy like others are.56550



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ratingratingratingratingrating by: DK in Ga03/23/2012

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Every product I have recieved, has been spot on!!! Shipping is great, again thanks for the care you use for me...DK34927



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ratingratingratingratingrating by: Andy01/30/2012

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Just what I was looking for to help move my trailer when empty with my Chevy Colorado. 30554



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ratingratingratingratingrating by: ruth m.12/06/2011

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Fast and accurate service, TY. 27848



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ratingratingratingratingrating by: Rowly W.11/14/2011

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Excellent product and had heavy gauge cables. Recommended.26930



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ratingratingratingratingrating by: ms10/11/2011

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as advertised - wish the 4 prong plug had a weather cap to cover the plug sin to the interior harness...25409



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ratingratingratingratingrating by: Clayton S.09/13/2011

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Good Quality Product 23865



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ratingratingratingratingrating by: Jerry B.09/04/2011

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Product was exactly what I expected. And it works as advertised as well.23566



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ratingratingratingratingrating by: Tom A05/12/2011

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Simple installation. Works well with solid connections. Had no issues while towing.13740



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ratingratingratingratingrating by: coloradodave02/17/2011

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FAST SHIPPING! looks like a sturdy part and is well made.7328



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ratingratingratingratingrating by: Jerry01/18/2011

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Great Service Received as described and prompt delivery5652



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ratingratingratingratingrating by: Mike04/15/2014

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I looked for this product at several auto and trailer supply stores around town, none of them had it. Glad I was able to find it here. Shipping was fast.125122



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ratingratingratingratingrating by: LG04/08/2014

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Good product, well built, works great 124260



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ratingratingratingratingrating by: Elaine L Williams04/08/2014

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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



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ratingratingratingratingrating by: Heather04/02/2014

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Seems to work great so far. Glad I bought it, and it arrived really fast, too! Thanks!123455



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ratingratingratingratingrating by: Robert B04/01/2014

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Just what I was looking For I was able to combine two different plugs to gather so I tow two different trailers, with out changing the wireing 123205



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ratingratingratingratingrating by: Anthony K.03/25/2014

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Inexpensive. Easy to install. Works well. Great customer.service from etrailer. Happy customer.122243



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ratingratingratingratingrating by: Jack C02/24/2014

Is this review helpful?


Products were what I wanted , arrived two days after ordering, Ordered by phone and Katie D ,was very helpful..117526



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ratingratingratingratingrating by: bobr02/04/2014

Is this review helpful?


I haven't had a chance to try the connector but it looks very nice. I bought it in case I ever need to tow a trailer with a 7 pin connector. Fits the bill!115739



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ratingratingratingratingrating by: Mike M01/28/2014

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Adapter was delievered in a very timely matter, and works great.115029



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ratingratingratingratingrating by: Adrian01/06/2014

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Great adapter. Saves hassle of changing wiring111969



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ratingratingratingratingrating by: JOHN11/18/2013

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I just bought a new trailer that needed the larger connector and the adapter that I purchased from etrailer arrived in good time and worked perfectly 107636



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ratingratingratingratingrating by: Dave D.11/13/2013

Is this review helpful?


Works as advertised! Could have had mounting screws!107272



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ratingratingratingratingrating by: d foster10/26/2013

Is this review helpful?


Works as intended came as shown, no ground screw included. 105299



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ratingratingratingratingrating by: Mike H10/18/2013

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Excellent Product - Quick delivery. etrailer.com has always been very professional and easy to do business way. Excellent service!104283



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ratingratingratingratingrating by: MCZimm09/21/2013

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Nothing could be easier! 100892



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ratingratingratingratingrating by: Mike E.09/07/2013

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Installed and ready to go in 5 minutes. The preinstalled connectors are a nice touch.98841



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ratingratingratingratingrating by: Jesse S.08/29/2013

Is this review helpful?


Ordered a Honda Wiring Kit and Adapter - product worked perfectly, and communication and shipping from Etrailer.com were great. Would definitely recommend!97515



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ratingratingratingratingrating by: Mike M.08/26/2013

Is this review helpful?


Just what I needed. 96904



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ratingratingratingratingrating by: James K08/13/2013

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Looks great installs in minutes. 94852



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ratingratingratingratingrating by: Jason H07/30/2013

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Product was exactley what I ordered aand exactley what I needed to connect to my boat trailer92455



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ratingratingratingratingrating by: William B.07/26/2013

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Thank you!! Installed and working perfectly. Would definitely buy from etrailer again.91825



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ratingratingratingratingrating by: Tim07/19/2013

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



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ratingratingratingratingrating by: Kevin F.07/17/2013

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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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ratingratingratingratingrating by: Todd M07/17/2013

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Adapter worked perfectly. Thank you etr ailer.90035



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ratingratingratingratingrating by: Joe F07/16/2013

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A snap to install. 89737



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ratingratingratingratingrating by: WWall06/11/2013

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No problems with this. 84097



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ratingratingratingratingrating by: Randy Herrington05/16/2013

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Shipping was fast and product great 80532



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ratingratingratingratingrating by: BRIAN F.04/13/2013

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Fast delivery, quality product, Easy install. No instructions in the box. Would have been better if it had come with a mounting bracket. Fixed that with a L bracket.75864



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ratingratingratingratingrating by: DAMIAN04/08/2013

Is this review helpful?


love it took me maybe 5 minutes to inst all74763



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ratingratingratingratingrating by: tonja03/13/2013

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Worked as planned. 70591



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ratingratingratingratingrating by: Jerry03/12/2013

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Excellent product, good service. 70123



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ratingratingratingratingrating by: Jim02/28/2013

Is this review helpful?


Plug in ready. Simple installation! 68016



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ratingratingratingratingrating by: Ed02/20/2013

Is this review helpful?


Fast service. The product is excellent. Tell everyone thanks67096



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ratingratingratingratingrating by: Herbert01/18/2013

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very quick and good service , Herb 63447



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ratingratingratingratingrating by: Lester01/17/2013

Is this review helpful?


Great service. Will tell my friends about E Trailer & hope to use them again soon 63398



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ratingratingratingratingrating by: Herbert01/14/2013

Is this review helpful?


very happy with product and ordering pr ocess.62869



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ratingratingratingratingrating by: CC Autoworks01/07/2013

Is this review helpful?


Was very convenient, had not used this before62577



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ratingratingratingratingrating by: Edward P.12/13/2012

Is this review helpful?


Well made. 61355



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ratingratingratingratingrating by: RPM12/08/2012

Is this review helpful?


Works as advertised. Simple. 60987



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ratingratingratingratingrating by: Clint M.12/06/2012

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Product works just like it should. Would buy it again and would buy from etrailer.com again.60856



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ratingratingratingratingrating by: Flap11/10/2012

Is this review helpful?


Great item. Worked very well 59153



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ratingratingratingratingrating by: John B10/24/2012

Is this review helpful?


Products were shipped very quickly and arrived in great condition. Email communication during the process was very good as well! 58024



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ratingratingratingratingrating by: rob c.09/04/2012

Is this review helpful?


great piece did exactly what it said would do, 53870



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ratingratingratingratingrating by: Rich H08/28/2012

Is this review helpful?


Great service, product and easy to install. Would order again from them!53290



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ratingratingratingratingrating by: R. K.08/19/2012

Is this review helpful?


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



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ratingratingratingratingrating by: Murv08/07/2012

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very good product it works well and it is all set for hooking up the brake control and it is a quality product50799



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ratingratingratingratingrating by: Larry Lagasca07/16/2012

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Perfect product for whatever vehicle I drive or rent.48222



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ratingratingratingratingrating by: Chris C.07/11/2012

Is this review helpful?


Installed easily. Works fine. Instructional videos helpful.47493



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ratingratingratingratingrating by: Len07/11/2012

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The quality products were delivered when stated and with no damage found. Thank you.47471



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ratingratingratingratingrating by: Mike Rush07/07/2012

Is this review helpful?


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



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ratingratingratingratingrating by: tgiag07/02/2012

Is this review helpful?


Fits perfectly, and fast shipping. 46480



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ratingratingratingratingrating by: Joe R.06/13/2012

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Very pleased! Fast service too 44071



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ratingratingratingratingrating by: Lt Col B06/11/2012

Is this review helpful?


The adapter 4-pole to 7-pole works just fine. I took a short road test and all lights illuminated. Great product!43725



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ratingratingratingratingrating by: Gordon W.05/23/2012

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Looks fine - I've not yet used it. 41418



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ratingratingratingratingrating by: Tom M05/18/2012

Is this review helpful?


The connector looks to be very well made and robust. 40913



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ratingratingratingratingrating by: Todd M.05/13/2012

Is this review helpful?


Works great and easy to install. 40253



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ratingratingratingratingrating by: Jim D.05/06/2012

Is this review helpful?


Easy to install. 39523



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ratingratingratingratingrating by: Jack M.04/29/2012

Is this review helpful?


Great item. High quality. Fast shipping. 38727



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ratingratingratingratingrating by: Robert S04/19/2012

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As described, durable construction. Arrived quickly.37710



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ratingratingratingratingrating by: Tommy S.04/18/2012

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Very good item,good price and fast shipping. great communication would buy from etrailer again. Thanks!37623



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ratingratingratingratingrating by: Brian S04/16/2012

Is this review helpful?


Have not installed yet, but looks like nice quality component. 37429



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ratingratingratingratingrating by: James03/30/2012

Is this review helpful?


Exactly what I wanted, well constructed. Don't forget to order a mounting bracket if this is a new installation and your vehicle is not equipped.35700



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ratingratingratingratingrating by: Brian P.03/28/2012

Is this review helpful?


Quality product. Good instructions. 35327



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ratingratingratingratingrating by: Jay03/15/2012

Is this review helpful?


Excellent customer service!! 33989



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ratingratingratingratingrating by: David F.02/29/2012

Is this review helpful?


Great adapter and easy to install! 32765



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ratingratingratingratingrating by: Ben G.02/12/2012

Is this review helpful?


Worke great! 31630



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ratingratingratingratingrating by: Edward E. Sica02/09/2012

Is this review helpful?


Great Product! 31392



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ratingratingratingratingrating by: Zach02/01/2012

Is this review helpful?


Arrived quickly. Little dissapointed it didn't come with mounting hardware. Otherwise good product.30822



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ratingratingratingratingrating by: Fern B01/30/2012

Is this review helpful?


Great product...very sturdy! Easy to in stall!30656



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ratingratingratingratingrating by: Glenn O09/26/2011

Is this review helpful?


Product is easy to install. The connectors are sturdy, and the plastic wiring wrap makes for good cable management during installation.24585



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ratingratingratingratingrating by: menotu08/12/2011

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nice transaction. very fast and i got what i expected. would recommend and purchase from again. thanks21734



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ratingratingratingratingrating by: Chuck LeFever07/07/2011

Is this review helpful?


It will work out perfectly. Thanks. 18835



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ratingratingratingratingrating by: Frontier Justice06/13/2011

Is this review helpful?


Great product, great company. prompt elivery and customer oriented. Have bough here before and would recomend them to friends and family alike.16887



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ratingratingratingratingrating by: bob m.05/10/2011

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thanks fast and great service. 13195



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ratingratingratingratingrating by: Curtis04/22/2011

Is this review helpful?


Exactly what I needed, ordered it on Tuesday evening and received it on Thursday. Super Fast delivery. Will come to this store for all my trailer needs.12183



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ratingratingratingratingrating by: Al P04/01/2011

Is this review helpful?


The shipping was very fast and it was FREE! 10873



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ratingratingratingratingrating by: Mikey01/30/2010

Is this review helpful?


Looks like a factory install. Looks like it came with the vehicle. Love it.2679



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ratingratingratingratingrating by: Dawnelle03/30/2013

Is this review helpful?


This worked perfectly with the mount I bought for it. Be prepared to buy more wires to connect you trailer breaks though. 73379



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ratingratingratingratingrating by: DAVID02/19/2013

Is this review helpful?


works great 66977



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ratingratingratingratingrating by: Gary02/05/2013

Is this review helpful?


Came quick and hooked right up. No problems at all. 65010



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ratingratingratingratingrating by: Kevin K.08/09/2012

Is this review helpful?


Excellent 51070



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ratingratingratingratingrating by: Ren L.04/30/2012

Is this review helpful?


Awesomeproduct too simpleto require a real review put together well no issues.38805



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ratingratingratingratingrating by: Jacob D04/08/2012

Is this review helpful?


Trailer hitch and wiring harness were both a breeze to install. Only took an hour total. Quality products as well.36570



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ratingratingratingratingrating by: Lou P03/28/2012

Is this review helpful?


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



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ratingratingratingratingrating by: Pete S.01/29/2012

Is this review helpful?


Great product. 30513



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ratingratingratingratingrating by: Roger D01/25/2012

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Received this afternoon. I installed it at once. It will do everything I hoped for. 30360



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Expert Answers about Adapter 4 Pole to 7 Pole Vehicle End Trailer Connector - 30717                                             Do you have a question about this Wiring?


  • 2005 Honda Odyssey EX Tow Package
  • I would recommend the Hidden Hitch Class III Trailer Hitch, item # 87479, for your vehicle. I have listed the items you will need to complete your towing setup for towing a 2,500 pound travel trailer with trailer brakes below. Tekonsha PRODIGY Brake Controller, Item # 90185 T-One Vehicle Wiring Harness with 4 Pole Trailer Connector, Item # 118438 Brake Controller 7 & 4 Way Installation Kit, Item # ETBC7 Derale Series 8000 Plate-Fin Transmission Cooler Kit, Item # D13501 (Check out the FAQ
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  • Wiring for Toyota 2010 Highlander with a 7-Way connector for Towing
  • You will need the Curt Class III Round Tube Trailer Hitch, item # 13534, and with the tow package you will need the T-One Connector Wiring Harness with 4 Pole Trailer Connector - Toyota Highlander, item # 118449. I would go ahead and install the 7-Way connector. We have the Brake Controller 7 & 4 Way Installation Kit, item # ETBC7, which includes everything needed to install the wiring for the 7-way connector, once you have the 4-Way installed. You mentioned a 5-Way connector and if you have
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  • Where Do the Black and Blue Wires on 30717 Attach To on a 1999 Ford F-250
  • If your truck has the brake controller port underneath the dash, then there will be some wiring towards the rear of the truck that you will need to splice into. The blue wire on part # 30717 needs to be spliced into the blue wire on the factory tow wiring. We have an instructional page that shows how this is done that I have linked to below. You can also splice the black wire on the 30717 into the orange wire on the truck for a 12V power source.
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  • Installing a 7-Way Connector in a 2000 Chevy Express Van
  • To hard wire your 2000 Chevy Express Van with a 7-Pole connection, first, you will need Tow Ready Custom Fit Vehicle Wiring, # 118377. I have included a link to the instructions below. Basically, you plug in this wiring harness into a taillight connection and run the wires where needed (to the other taillight and then to the rear of the vehicle). With that installed, you will then add Brake Controller 7 and 4 Way Installation Kit, # ETBC7, which will provide you with the 7 pole connection and a
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  • Where Does the Black Wire Attach for Harness 30717 on a 2003 Chrysler Town and Country
  • The black 12 volt lead on Adapter 4 Pole to 7 Pole Vehicle End Trailer Connector, # 30717, attaches directly to the battery on your 2003 Chrysler Town and Country. You will have to attach the black wire to a length of additional wire, like 10 Gauge Blue Primary Wire - per foot, # 10-1-1, under your vehicle and run that wire to the battery through a 40 amp circuit breaker, # PK54540.
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  • What to do With the Extra Wires on 4 to 7 Pole Adapter for a Camper Trailer
  • On the Adapter 4 Pole to 7 Pole Vehicle End Trailer Connector, # 30717, the extra wires can be taped off, tied up with a cable tie, and tucked out of the way if not in use. I would attach the white ground wire to an existing grounding point or the vehicle frame even if you do not intend on adding a brake controller (which is what the other wires are for). You would then attach the vehicles 4-Way into the 4-Way end of the adapter and plug your trailer connector into the 7-Way for lights only.
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  • Will 4 to 7-Way Adapter # 30717 Plug In Directly On a 2001 Ford F-150
  • Part # 30717 is meant to adapt a 4-Way plug to a 7-Way plug. In order to use the adapter, you would need to have a basic 4-Way plug like part # 118344, and the adapter would plug into the 4-Way connector. You would then connect the additional wires on the adapter to power the rest of the prongs on the 7-Way plug. If you are wanting to move your current 7-Way connector from the 2005 Excursion to the 2001 F-150, I cannot guarantee that it would be a direct fit. We do, however, offer a custom
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  • Troubleshooting No Right Brake Light Signal on a Trailer with 4-Way Wiring Harness
  • It sounds like one of two situations. The first thing I would check, is the tail lights connection to ground. Most tail lights are grounded through their mounting hardware. Make sure that there is no paint or corrosion keeping the light from making a good ground connection. You should also check out the tail light bracket connection to the trailer frame. If the bracket is bolted to the trailer frame there may be rust and corrosion inhibiting the ground connection. If a ground issue is not the
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  • Adding 7-Way Trailer Connectors for Trailer Lights and Trailer Accessories
  • A 5-Flat trailer connector would be good for left turn, right turn, brake, running lights, and electric brake lockout, so it would not have enough functions for your application. I have included a link to a trailer wiring FAQ below that contains information on the various connectors and the functions they provide. A 7-Way is the better way to go. You will have all the functions listed above plus a 12 volt function and an additional accessory function that can be used for reverse lights or ano
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  • Are Two Power Wires to Battery Needed to Hookup a 4-Pin and 7-Pin Connector on 2003 Ford Windstar
  • Yes, you will need to run separate wiring for both connectors. You will need to install the wiring for the 4-pin connector, part # 118305, with its own power wire to the battery. Then, you will need to install the wiring for the 7-pin connector, part # 30717 with its own power wire. This is done to protect the vehicle power and wiring system. You will want to check your owner manual of your vehicle to check and see when the vehicle was manufactured. If your 2003 Ford Windstar was manufactured
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  • What is the Yellow Auxiliary Wire for on 4 pole to 7 Pole Adapter from Tow Ready Part 30717
  • The black wire is the 12V hot power source that is usually used to maintain a trailer battery. The yellow wire, in some cases it is orange or purple, is for the center post which is usually wired for reverse lights or a reverse lockout on a boat trailer. If you do not need a reverse circuit, you can just tape the yellow wire up and out of the way.
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  • Installing a 7-Way Trailer Connector on a 2010 Subaru Outback Wagon
  • You are correct, the 2010 Subaru Outback Wagon current has a T-One trailer wiring harness, # 118467, available. In order to use the 7-Way on your pop-up camper, you will first need to install this 4-Way. I have included a link to the installation details and a video installation below. At this point, you have 2 options. You can install a 4-Way to 7-Way adapter like # 30717 that you have referenced, plug in the 4-Way installed previously to the back and only use it for trailer light functions,
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  • How To Wire Brakes From Trailer To 2004 Honda Odyssey
  • To activate and control the brakes on your trailer you will need to install a brake controller and 7-way connector on your 2004 Honda Odyssey. For a brake controller, I would recommend the Tekonsha Prodigy P2 Brake Controller, part # 90885, which is a proportional brake controller. A proportional brake controller sends power to the trailer brakes in proportion to the brake force applied to your vehicle. To install the Prodigy P2 Brake Controller, you will first need to install the Brake C
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  • Installing Tow Ready 4-Way to 7-Way Trailer Wiring Adapter # 30717 On A 1995 Ford F250
  • The 4-way connector on the Tow Ready 4-Way to 7-Way Trailer Wiring Adapter, part # 30717, will connect to the 4-way already on your 1995 Ford F-250. You will need to run the blue wire on the adapter up the truck and connect to the brake output wire on your brake controller, usually also blue. You can splice into the blue wire on your brake controller wiring harness using the quick splice 10-12 gauge, part # 562. I am including a video link of how the quick splice is connected. The remaining w
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  • Additional Wiring and Parts Needed to Tow Trailer w/ Brakes and 7-Way With 2005 Toyota Sienna
  • In addition to the 4-way connector that you installed on your 2005 Toyota Sienna, you will need to install Brake Controller 7 & 4 Way Installation Kit, part # ETBC7 and an Electric Brake Controller. The item you selected, Adapter 4 Pole to 7 Pole, would give you a 7-way connector at the rear of your vehicle, but you will need part # ETBC7, as it includes all the necessary hardware and wires to run a brake controller on your Toyota Sienna. To begin you will need to install part # ETBC7, which
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  • How to Connect the Yellow Wire for Use on Adapter Vehicle End Trailer Connector # 30717
  • Regarding the Yellow wire on the Adapter 4 Pole to 7 Pole Vehicle End Trailer Connector, # 30717, how and what you connect it depends on what function you need it to perform. For example if your trailer has reverse lights, or you have a coupler with an electric reverse lockout feature, you would connect the yellow wire to the reverse light wire behind one of the taillights. If you need it to provide power to something on the trailer such as to maintain a battery, you should have it attached
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  • How to Install a 7-Way Trailer Connector on a 1998 Dodge Ram for a Brake Controller
  • If your 1998 Dodge Ram did not come with a factory 4 or 7-Way trailer connector, then you will need to first install Tow Ready Custom Fit Vehicle Wiring, # 118329. I have included a link to a video installation and a link to the installation instructions for reference. You would then need to install a 4 and 7 Way Installation Kit, # ETBC7. We have a couple of detailed FAQ articles on this installation which I have linked for you. I have also included a video link showing a typical installatio
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  • How To Wire A 1998 Allegro Motorhome And Tow Dolly For A Brake Controller
  • The brake controller I would recommend for your 1998 Allegro motor home is the Tekonsha Prodigy P2 Proportional Brake Controller, part # 90885. The Prodigy 2 brake controller is our best selling model. It can be mounted in a 360 degree vertical range and will level itself automatically. It is a proportional brake controller which means that the brakes are applied to the tow dolly at the same time and same strength as the brakes on your vehicle. I am including a link to the installation instructi
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  • Can a 7-Way Trailer Connector and a Brake Controller be Installed on a 2007 Toyota Highlander Hybrid
  • I did some research on the Highlander Hybrid and did not find anything that says there is a different grounding situation on the Hybrid Highlanders. I did notice that the factory replacement harness, item # 118248, uses a chassis ground so grounding the wiring to the vehicle chassis is the correct way to go. The problem may have gotten confused with the high power electrical system on the hybrid models. The high power hybrid electrical system is separate from the low power system on the vehic
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  • Wiring The 4 to 7-Way Adapter # 30717 to a 1983 Ford Ambulance To Pull a Race Car Trailer
  • If you have the Adapter 4 Pole to 7 Pole, part # 30717, I would recommend using a circuit tester, part # 3808 to test the functions of each pin on the 7-way. I have attached an FAQ Article showing the functions of each pin for the vehicle side 7-Way. The other thing I would recommend checking is the 7-Way connector on the trailer, to make sure there is not corrosion in the connector. If there is corrosion in the connector, it will need to be replaced. I would also recommend checking the w
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Info for this part was:


Test Fit:
Joe V

Photos by:
Theodore B

Expert Research:
Michael L

Video by:
Andrew K

Expert Research:
Robert G

Expert Research:
Patrick B

Expert Research:
Michael H

Expert Research:
Jeff D

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Reno H

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Jameson C

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John H

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Adam R

Video Edited:
Dustin K

Expert Research:
Lori W

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