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  1. Custom Fit Vehicle Wiring
  2. Tekonsha
  3. Custom Fit
  4. Trailer Hitch Wiring
  5. 4 Flat
  6. 7 Round - Blade
Multi-Plug T-One Connector Assembly for 7-Way & 4 Pole Trailer Connector

Multi-Plug T-One Connector Assembly for 7-Way & 4 Pole Trailer Connector

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Custom Fit Vehicle Wiring

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Custom Fit Vehicle Wiring 20135 - No Converter - Tekonsha
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  • Reviews (65)
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Tekonsha Custom Fit Vehicle Wiring

  • Custom Fit
  • Trailer Hitch Wiring
  • 4 Flat
  • 7 Round - Blade
  • No Converter
  • Tekonsha


Tow Ready Replacement 7-Way Flat Pin and 4-flat Combo Adapter Harness for Vehicles with a Factory Socket

  • Ability to tow trailers with different style trailer connectors
  • Durable plastic shell
  • Provides both a 7-Way and a 4-Way covered trailer connector
  • Mounting bracket included
  • Replacement socket for vehicles with a factory 7-way
  • 1-Year limited warranty


20135 Multi-Plug T-One Connector Assembly for 7-Way & 4 Pole Trailer Connector

Item # 20135

Installation Details 20135 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Video of Multi-Plug T-One Connector Assembly for 7-Way & 4 Pole Trailer Connector

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




Video Transcript for Tekonsha Custom Fit Vehicle Wiring - Trailer Hitch Wiring - 20135 Review

Today, we're going to review part number 20135. This is the Tow Ready multi-plug OEM replacement harness. This kit will let you add a 7 way RV style trailer connector and a 4 way connector to your vehicle. It has the factory tow package. This is a custom fit part number. It is designed to plug into a Dodge, Chrysler, Jeep, and Mitsubishi vehicles, starting in the year 2000, that have the factory 7 way connector.

I would recommend this to go to our fit guide on our website, and you can put in your year and model of those vehicles, and it would tell you if this would be the correct part number for your application. This is a plug in, simple installation. There's no cutting or splicing required. This wiring harness, basically, will plug into your factor wiring at the back of the vehicle. The plug right here is extremely durable ABS plastic construction. It has a nice, oversized lid hinge right up here.

It helps keep out any dirt and moisture from getting to the terminals. It also has nice, enhanced weatherproofing. They do use seals on the cap itself, and the terminals are corrosion resistant. It does include the mounting bracket and the screws. They're all included. Basically, what you would do is, before you go and plug this in to the back of your vehicle, I would take your mounting bracket, slide it on.

Slide the four way also through there. Bring it all the way up, and you can see that it will line up. The holes on the mounting bracket will line up with the holes right there. At the very top, you'll see the holes for mounting it to the vehicle. Then, what's nice is, you'll see this little cutout on the side.

Basically, that's where you can just slide in your 4 way just like that. Then, plug this in and with this plugged in, this would be at the back of your vehicle. You have access to the 7 way, and then the 4 way, just like that. That should do it for the review on part number 20135, the Tow Ready multi-plug OEM replacement harness. .

Customer Satisfaction Score:


Customer Reviews

Multi-Plug T-One Connector Assembly for 7-Way & 4 Pole Trailer Connector - 20135

Average Customer Rating:  4.8 out of 5 stars   (65 Customer Reviews)


by:
1998 Dodge Ram Pickup

Exact same product that was in the picture arrived at my door, so the item was exactly as described. It plugged directly into my factory wiring harness on my 1998.5 Dodge Ram 2500 with a 24v Cummins. It did not fit on the factory mounting position, but mine was very bent anyway. So I cut it off and used the included mount. The self tapping screws that were supplied were not very strong, so I had to use rivets to secure the mount. But I was mounting it on the hitch receiver which is very thick steel, so it was expected. Overall, great product and works as it should.



by:
2006 Dodge Ram Pickup

Yes, this product works great. It plugged into the factory harness. I would recommend this product



by:
2008 Jeep Liberty

This is a nice quality part I'm using to replace the OEM connector on a 2008 Jeep Liberty. I really like the way it has a four pole connector in addition to the 7 way connector which saves time and the hassle of finding the four pole adapter to plug into the 7 way socket. The OEM part that came with the Jeep was 7 way only. This is a great improvement. Fast shipping and super communication. Thanks!

Rex G.

6/8/2016

nicely thanks



by:

little problem hooking up to trucks wiring harness due to plastic square
connector being bent out of shape on bottom a little able to reshape and hookup,connector is a lot better quality than original one that was on truck and has 7-way & 4 pole connections makes towing different trailers easier awesome! fast shipping great price! helped me avoid dealing with dealerships high prices and delays on shipping and getting wrong product, website was easy to order from and great description of connector with good quality photos will save on my favorites and pass on to friends thank you Ross

Jim D.

7/21/2013

Does this assemble connect to the wiring behind the left light assemble on the durango? want to make sure Im looking at the right thing. I need the entire assemble.

Patrick B.

7/23/2013

This does not connect behind the tail lights. It is designed for 2000-2008 Durangos that came with a Factory 7-Way. It will plug into a port or harness underneath the vehicle, near the rear bumper. If your Durango did not come with a factory 7-Way, There are 4 Pole flat harness systems that are designed to plug in behind the tail lights. Which one you need depends on the model year Durango. Use our Fit Guide to find out which.


by:

These people understand customer service. I volunteer with SCORE as a small business counselor / mentor and the people at eTrailer epitomize how customer services should be handled. I requested confirmation that the part would work for my truck even though it listed several years beginning with the year after mine. They researched and determined that only the bracket would not be the same which was not a problem for me. Excellent product. Excellent service. Excellent company.



by:
2000 Dodge Ram Pickup

Wonderful product. All I had to do was pop out the old wiring harness and plug in the new. Easy as that. Bought a travel trailer so need the 7 way, but have a boat which uses the 4 flat wire so problem solved. Happy camper and boater. Great price as well. As a ebay person I couldn't find a better deal. Now etrailer is bookmarked on my PC..



by:

Has held up really well. My vehicle had an aftermarket harness already installed, but the video on the etrailer site made fitting the new one in much easier. The instructional videos on this site are really fantastic.



by:
2005 Jeep Grand Cherokee

Great customer service experience! The notification and follow-up was excellent regarding receiving my order, shipping my order and delivery of my order. This particular connector was exactly as advertised and plugged directly into my 2005 Jeep Grand Cherokee Laredo's factory wiring harness. I had to make a few minor modifications installing the bracket but it worked out just fine.



by:

The trailer adapter that I received is the EXACT Factory replacement item at a very reasonable price. Much less than the dealer was charging for the exact same item. Thank You!



by:

Had a small trailer I would always pull my dirt bikes never had trailer lights hooked up, which is illegal, I saw a product at etrailer for Only $29 bucks ,one two three clicks ,works imperfect. Avoid getting a ticket and for safety literally takes 5 minutes I would recommend hooking up your trailer lights



by:
2001 Dodge Ram Pickup

This product is genius! I no longer have to carry around an adapter for my utility trailer. It perfectly connected to my 2001 Dodge Ram and installed in less than 5 minutes. I have made several purchases from etrailer.com and I am more than satisfied.



by:
2006 Chevrolet Silverado 2500

This was another great part from etrailer I installed it in just a few minutes on a 2006 dodge 2500 4x4



by:

Easy install in my OEM footprint. Makes it easy to use either kind of trailer connector. Can't lose an adapter you do not need to use!



by:
2004 Dodge Durango

Exact Dealer Replacement Item. 2004 Dodge Durango Trailer electrical connector.



by:
2003 Dodge Ram Pickup

Shipping was fast. Got the product in good condition. Plugged right in to the factory plug like it was supposed to. Should send some dielectric grease with it but overall very pleased.



by:
2003 Jeep Grand Cherokee

Good. Wasn't an exact fit on my jeep. I already had a bracket for the part on my car. Had to modify this piece to make it fit on the bracket already on my jeep. The plug was a good fit though



by:

Product is superior, the best 7 way that can be found it hooks right up to the wire harness easy as that hardware included is great.
Works exceptionally great. Great people at etrailer, shipping was fast.



by:
1999 Dodge Ram Pickup

Bought this for my 1999 Dodge Ram 2500 and it was a perfect fit. The website made it easy to find the right part for my vehicle and the delivery was quick and without delay. I would purchase again from etrailer.com.



by:
Jeep

I don't know how to post a picture, but trust me, this thing fit my jeep perfect. it was easy to install, no hassles at all. the young lady on the phone was very helpful and was very familiar with the product. it was delivered in a couple days, and was half the price the jeep dealer quoted. this was my third order. I'm very happy with price, service, products. I give them my highest recommendation.



by:
2003 Dodge Ram Pickup

Product was easy to install and a valuable addition to my truck. A well deserved upgrade to my trailer towing ability.



by:
2008 Dodge Sprinter

The best " plug n play " set up. The duo set up has made it easy to tow various types of trailers



by:
1999 Dodge Ram Pickup

Hooked up in seconds and works great. I have the plug temporarily attached with zip ties until I decide on a permanent mount.



by:
2000 Chevrolet Silverado 3500

Shipping was extremely fast. Fit perfectly. Plug matched my 2000 Dodge 3500. I didn't want to strip and clamp wires and with this factory fit I didn't have to. ( and a flat 4way to boot. )



by:

Quick delivery received it in 2 days packaged great product seems to be good as i haven't installed it yet but extremely satisfied with customer service. Would recommend etrailer to anyone



by:
2003 Dodge Ram Pickup

I have not installed the product yet but I am hoping that the installation is simple


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Show More Reviews

See what our Experts say about this Tekonsha Custom Fit Vehicle Wiring

  • Will The Tow Ready T-One Connector Assembly, # 20135, Work On A 2001 Jeep Grand Cherokee
    The Tow Ready Multi-Plug T-One Connector Assembly, # 20135, will work on your 2001 Jeep Grand Cherokee if you have a factory 7-Way connector on the vehicle now. It is a replacement part that will change your factory 7-Way to a 7-Way and 4-Pole trailer connector. It will connect to the factory connector located under the rear of the vehicle and the 7-Way and 4-Pole will mount into the space where the 7-Way was located. If you do not have the factory 7-way connector on your vehicle then...
    view full answer...
  • Installing a 7 Way Connector on a 2003 Dodge Durango with 4 Way Connector
    Our Universal Installation Kit, # ETBC7, is the way to go. This kit includes everything that you need to install a 7 way connector and the wiring required for installing an electric brake controller on your 2003 Dodge Durango. I have attached a couple of links that might be helpful.
    view full answer...
  • Troubleshooting 7-Way on 2002 Dodge Ram 2500
    To find the issue will require you to do a number of troubleshooting steps, and the easiest to start with is taking a look at your owner's manual to locate any trailer fuses or relays and ensure they are all there and in working order. If they are, use a circuit tester and check the wiring going into your 7-way to see if they are carrying the correct signals. You may have a short and that would mean you would have to trace your wiring and check it thoroughly to ensure there are none that...
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  • Parts Needed to Add a 7-Way and 4-Way Trailer Connector to a 2003 Jeep Grand Cherokee
    In order to add a 7/4-Way to your 2003 Jeep Grand Cherokee you will start by adding a 4-Way using # C55369. I have linked installation instructions and a video showing a typical installation for you. Next you will need a 4 and 7-Way installation kit using # ETBC7. This connector has a 7 and 4-Way connector like you are wanting and comes with all the wiring needed to install it. I have included some links that will explain the ETBC7 installation. The installation instructions for the ETBC7...
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  • Can Trailer Wiring Without Converter be Installed on a 2007 Jeep Liberty
    If you have the factory tow package on your 2007 Jeep Liberty then you can use the Tekonsha # 118381 or # 20135 which is just wires without a converter. If you don't have the factory tow package then you need the Tekonsha # 118524 which does have the converter. I find it a little odd that the converter popped all of the fuses on your vehicle because the purpose of the converter is to protect your vehicle OEM wiring. With the Tekonsha # 118524 mentioned above it will draw power directly...
    view full answer...
  • How to Add a 7 Way Wiring Harness to a 2005 Jeep Liberty
    The Tekonsha # 20135 is specifically designed to be used on a 2005 Jeep Liberty with the factory towing package. If you are unable to find the port for this to connect to, you may not have the factory towing package. The only real way to confirm if you do have this package is to contact a Jeep dealer and have them run your VIN. They should be able to tell you right away if you do or do not. If you do not end up having the towing package, you will need to start with a 4 flat, like the Tekonsha...
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  • Where Does 7-Way Trailer Wiring Install on 2006 Jeep Grand Cherokee
    If you had the 7-way wiring connector on your 2006 Jeep Grand Cherokee to install the wiring harness part # 20135 the connector would be under the rear of the vehicle near the rear bumper. It would be a square connector typically found right behind the bumper.
    view full answer...
    Image 1 for
  • Wiring Harness Installation for 2004 Jeep Grand Cherokee
    If you have a factory tow package on your 2004 Jeep Grand Cherokee, installation is a simple quick connect into the existing wiring using something like the # C55381 or # 20135 depending on whether you want a 7 or 4 way pole connector. If you do not have a factory tow package, I recommend the # C55369 which can be connected into your vehicle's brake lights in the rear cargo area. See link below for installation video. We have several hitch options if you do not already have one. I...
    view full answer...
  • Factory Tow Package Left Turn Signal/Brake Light Circuit Not Working on 2000 Ford F-250
    There are separate fuses for the tow package wiring on your 2000 ford F-250. Under the hood in the power distribution box you will need to check the fuse that is in location 1. There should be a 7.5 amp mini fuse in this location. That is the one for the trailer left turn signal and brake lights. You can find the locations of all fuses/relays and their functions in the truck owners manual should you ever run into this problem again!
    view full answer...
  • Replacement 4-Way/7-Way for 1999 Dodge Ram 2500
    We have a replacement 4 and 7-way combo that fits your 1999 Dodge Ram 2500 with the part # 20135 but the # 42145 that you referenced does not fit as it was designed for a different truck that has a similar but different connector.
    view full answer...
  • Recommended Wiring Harness for 2006 Jeep Liberty Towing Utility Trailer
    I'm not entirely sure which you were comparing but the main difference is whether or not you have the factory tow package on your 2006 Jeep Liberty. If you are comparing brands, then Tekonsha is the way to go. We have found their wiring to be the most reliable by far. Troubleshooting a wiring issue is never fun, so I always recommend the most reliable option. We have the following available from Tekonsha: -T-One Vehicle Wiring Harness # 118524 (If you do not have the tow package) -T-One...
    view full answer...
  • Trailer Hitch and Trailer Wiring Harness Recommendation for 2005 Jeep Grand Cherokee
    For your 2005 Jeep Grand Cherokee, I'd recommend the Draw-Tite Class III hitch, part # 75338 which is a fit for a V8 equipped Grand Cherokee as long as it's NOT and SRT8. None of our vendors offer a hitch fit for SRT 8 models as the rear bumper/fascia is different. The hitch has a 750 lb tongue weight/ 5000 lb towing capacity which goes up to 750/7500 if weight distribution is used. This is the highest weight-rated hitch we offer for your 2005 Grand Cherokee. If your Grand Cherokee has...
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  • Replacing the 7-Pole Connector on a 2001 Dodge Dakota Quad Cab
    You can use the Pollack 7-Pole Trailer Socket, # PK12-707E, on your 2001 Dodge Dakota quad cab. Keep in mind, this is not an OEM replacement socket, so the wires will need to be attached to each terminal in the socket. I have attached a photo showing how this socket should be wired. It is important that you wire the socket by function and not wire color since vehicle manufacturers are not known to follow an industry standard color code. If you are replacing an OEM 7-way, then you may...
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    Image 1 for
  • Wiring 2003 Pontiac Montana with 7-Way Trailer Connector
    The Tow Ready Multi-Plug T-One Connector Assembly, part # 20135 is a replacement for Chrysler, Jeep, Freightliner and Mitsubishi OEM trailer connectors. For your Montana, I would recommend using Curt Connector, part # C55355 in conjunction with part # ETBC7 if you are wanting to install a brake controller. The Brake Controller Install Kit, part # ETBC7 includes everything necessary to install a brake controller, as well as the adapter to convert the 4-pole provided by part # C55355 to...
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  • What Connector Is Needed To Get 7-Way And 4-Way On Back Of 2003 Chevy Silverado
    The Tow Ready Multi-Plug T-One Connector Assembly for 7-Way & 4 Pole Trailer Connector, # 20135, that you have referenced is not the correct part for your 2003 Chevy Silverado. It is for Chrysler/Dodge vehicles. The part you would need is the Hopkins Replacement Multi-Tow 7-Way and 4-Way Trailer Connectors for Ford, GM Trucks with Factory 7 Way, # 30955, that will connect to the OEM connector which is above the spare tire. That will give you a 7-Way and a 4-Way connector on the back of...
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  • Replacement 7-Way on 2001 Dodge Ram 1500
    So you have the factory 7-way on your 2001 Dodge Ram and are looking to replace it? For that all you would need is the Hopkins Endurance Quick-Install 7-Way Trailer Connector # HM42190; the wiring harness plugs into your factory wiring and the 7-way plugs into the harness. There is also the Multi-Plug T-One Connector Assembly for 7-Way & 4 Pole Trailer Connector # 20135 which also just plugs in and allows you to have both a 7-way and 4-way available for your '01 Ram.
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  • Troubleshooting Right Turn Stop Signal Not Functioning on a 2000 Ford F350 7-Way
    The problem is somewhere between the 7-way connector and the wiring of your truck. You can try cleaning the pin on the inside of your 7-way. Corrosion or dirt on the pin can cause the circuit not to function. Even if it doesn't look that dirty try using some fine grit sandpaper to get the pin down to bare metal. Other places to check is the back of the 7-way. There might be corrosion there that needs to be cleaned. Also, check for exposed wire and fix as necessary. Aside from that you...
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  • 7-Way Recommendation for a 2002 Jeep Grand Cherokee
    The trailer wiring harness part # 20135 that you referenced has been confirmed as a fit for your 2002 Jeep Grand Cherokee. You can check under the rear bumper of your vehicle to see if you can find the square connector that it is designed to plug into. This product is designed as a replacement 7-way, but if you have the square connector present then it would work as well.
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  • Location of Trailer Wiring Conections on a 2005 Dodge Durango Without Factory Hitch
    If your 2005 Dodge Durango was wired for the factory wiring harness you will be able to use the Multi-Plug T-One Connector Assembly for 7-Way & 4 Pole Trailer Connector, item # 20135, to install a 7-Way and 4-Way connector at the rear of the vehicle. You will find the connector at the rear of the vehicle near the drivers side frame rail above the spare tire. If you do not have the factory installed tow package wiring you will need to use the Tow Ready Custom Fit Vehicle Wiring for the...
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  • Replacement Trailer Connector for 2007 Ford F-150
    The Pollak Replacement 7-Pole, RV-Style Trailer Connector Socket - Vehicle End, part # PK11893, is an exact OE replacement for your vehicle-end trailer connector. I have included a link to the part below.
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  • Multi-Plug T-One Connector Assembly Recommendation and Installation for a 2002 Dodge Dakota
    I attached a link to the installation instructions for the Multi-Plug T-One Connector Assembly # 20135, but installation is pretty simple as the old connector will unplug and this one will plug in it's place on your 2002 Dodge Dakota.
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  • Replacement 7-Way Trailer Connector # 20135 for 2006 Dodge Ram
    As long as the corresponding socket located behind the bumper is still intact, the Tow Ready # 20135 will replace the damaged 7-way trailer connector. You can use a circuit tester like part # PTW2993 to test the existing connector to ensure it is still functional. This is done by activating the lighting circuits (headlight, taillight and turn signal) and testing the pins and making sure they light the tester. I have linked you to a video showing how the tester is used.
    view full answer...
    Image 1 for
  • Troubleshooting Left Turn/Stop Lights on Trailer Not Operating When Connected to 2002 Dodge Ram
    Thank you for all of the details. It sounds like the problem may be on your pickup still. You mentioned testing the pins in the 1, 3, 7, and 11 o'clock positions but if you reference the attached photo you can see that the left turn/stop pin on your 2002 Dodge Ram 1500 should be the pin in the 9 o'clock position of your 7-Way. If you test this pin and find that there is no signal then you likely have a bad fuse or relay. In the online owner's manual it looks like there is a "Trailer Tow...
    view full answer...
    Image 1 for
  • Recommended Towing Setup For 2002 Dodge Ram 1500 Quad Cab For Towing A 5,500 lb Camper
    For your 2002 Dodge Ram 1500 Quad Cab, I recommend the Curt Trailer Hitch Receiver - Custom Fit - Class IV - 2" # C14020. This is the only trailer hitch receiver confirmed to fit your truck that will not require a weight distribution system for the trailer weight you will be hauling. It has a 10,000 lb capacity without or a 12,000 lb capacity with a weight distribution system. Another option is the Curt Trailer Hitch Receiver - Custom Fit - Class III - 2" # 13326. This trailer hitch...
    view full answer...


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