Videos are provided As a guide only. Refer To manufacturer
installation instructions And specs For complete information.
Quickly and easily install a 4-way trailer connector on your Jeep Grand Cherokee with this custom wiring harness. T-One connector plugs directly into existing wiring. Powered ModuLite reduces strain on wiring system.
Note: Early production models built before April 1994 require wiring harness 46255, if built March 1994 or beyond, 118349 is correct.
This custom-fit T-One connector plugs into your Jeep Grand Cherokee's wiring harness, which is located behind the driver's-side and passenger's-side interior trim panels in your rear cargo area. Once you've plugged in the T-connector, run the hot lead up to your car battery. Connect the lead to the included fuse holder, and then connect the fuse holder to the positive terminal on your battery and insert the provided fuse.
Once installation is complete, the 4-way flat connector will be stowed in an out-of-the-way location within your cargo area.
It is recommended that you use a small amount of grease on all electrical connections - the plugs on your automobile and the 4-pole connector itself - to help prevent corrosion.
A ModuLite power module is built into this T-One connector. Because most trailers run on a two-wire system - wherein the brake and turn signals are carried on one wire - the separate brake and turn signals from your Jeep Grand Cherokee's three-wire system need to be combined so they are compatible with the wiring system of your trailer. This power module functions as a tail light converter to combine the brake and turn signal functions of your automobile so that they run on one wire to properly activate your trailer's tail lights. Note: This will not affect how the tail lights on your Jeep Grand Cherokee operate.
With a ModuLite, your trailer's lights will be powered without overloading your Jeep Grand Cherokee's electrical system. Because the module draws power directly from your car's battery and bypasses the electrical routes that are used by a basic wiring harness, there is virtually no draw on your tail light circuits.
Video of T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
Videos are provided As a guide only. Refer To manufacturer
installation instructions And specs For complete information.
Today we are going to be taking a look at part number 118349, this is T1 vehicle wiring harness with the four pull flat trailer connector. This product is going to fit your 1994-1998 Jeep Grand Cherokee, please note that early production models built before April 1994 require wiring harness 46255 and not this one that I am showing you today. That is available today at etrailer.com if you need it and it is going to be sold separately, but this unit is going to provide a 4 way flat trailer connector at the back of your vehicle to power your trailer signal lights. It is compatible with 5 pole, 6 pole and 7 pole adapters, adapters are sold separately, and it is going to come with a dust cap for the 4 way flat connector. That way you can cover up the connection points when the plug is not being used, now the black box on the unit, this is going to be the included module light. This is going to ensure that your vehicles lighting matches that of your trailers, the power module is going to connect directly to the vehicle battery through the wiring to avoid overloading the vehicles electrical system. Now one of the main benefits of a system like this is that it is designed to connect quickly and easily, it is going to come with detailed instructions to help with the installation process.
To begin, you need to locate the collection points in your rear cargo area, instructions are going to indicate exactly where those are and then you will need to plug in your T connectors. You are going to have two sets of connectors, one passenger side and one for the driver side. Once you have those connected you are going to go ahead and make a ground connection, that is the white wire with the ring terminal attached to it. Make your ground to a nice clean metal surface using the included self tapping screw. Once you have that connected you are going to need to mount the converter box, in the kit they are going to include some double sided adhesive tape, that way you can get that mounted to a nice clean out of the way location. It has also got a hole right here on the tab, that way you can install or mount it with a screw, or you can secure it with a zip tie.
So get that mounted and you are going to need to run the hot lead to the vehicle battery, the hot lead is going to be the red wire coming out of the black box. That is going to get connected to the bundle of black wire with one of the included butt connectors, other end of the black wire is going to run to the vehicle battery, it is going to get another butt connector attached to it and then you are going to cut the fuse holder in half, right here at the wiring. One half gets connected to the butt connector with the bundle of black wire, the other half gets a ring terminal attached to it and connects to the positive post on the vehicle battery. It does include your ten amp fuse, it installs right here in the fuse holder and it has got the fuse cap on it to keep it safe and secure. Now once that is done, you can go ahead and secure any excess wires with your zip ties, keep your wires up and out of the way and then, after the install is complete your 4 way connectors are going to be stowed in an out of the way location within your cargo area. When it comes to the maximum amperage, for our stop and turn lights we are looking at 2.1 amps per circuit and for the taillights we are looking for 4 amps per circuit.
It is also recommended that you use a small amount of dye electric grease on all of your electrical connections, like the plugs on the vehicle and the 4 pole connector itself and that is going to help prevent corrosion. If you need some of that you can of that you can find it here at etrailer.com and it is sold separately. That is going to do it for today's look at part number 118349.
Average Customer Rating: 4.7 out of 5 stars (70 Customer Reviews)Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring. Powered ModuLite reduces strain on wiring system.
by: Robbin S.06/25/2013
Fast service, correct product sent, and very helpful and knowledgeable staff. Thanks for your great service. I got my product in the time you said and I found it was easy to install and everything fit as described.. I am attaching some pics of the installation process.Thanks again. 86151
by: Mike S05/26/2014
Great Product. Detailed and accurate instructions. etrailer got my order right the first time, which is something another company could not get right, twice. Item arrive 1 day ahead of date originally scheduled to arrive. I am very pleased with this product and etrailer as a whole. 132407
by: Glenn L.04/18/2016
Just wanted everyone to know about the wiring harness that I purchased a year ago. It was exactly what I needed. I have a 1997 Jeep Grand Cherokee that I bought used. It had some jury-rigged wiring in it from a previous owner that didn't work correctly. The installation instructions with this were great. Just in case, I also looked at a you tube installation video to help. This wiring harness plugged right into the back light sockets and worked great from day one. It still works fine to this day. Turn signals, brake lights, and emergency blinkers are all working on the trailer. There are many choices out there. If your vehicle has trailer wiring problems, I would highly recommend this harness. Plus shipping was fast with no problems! Great company! 245807
by: Leon A10/28/2012
I ordered this converter for my 97 Jeep Grand Cherokee. After a 2-3 minute read of the instructions I proceeded to access the tailight plugs on my vehicle. You will need to remove the spare tire and open up both left and right side panels in the rear of the vehicle to gain access to the rear lights harness. After that it was simply unplug the existing connectors, plug in the adapter, route your wires under the tailgait cover panel, connect a power wire to a battery source and reassemble. Easy to do. Took me about 20 minutes and I was done. The Etrailer adapter kit was litterally plug and play. Works great. I am satisfied with my purchase and would recommend to anyone. 58212
by: Pete E.08/07/2014
Courteous service, fast delivery. Taillight converter works great. 144973
To start off my harness was delivered 4 days after ordering.I dont know what there thinking over there @ e-trailer but it's suppose to take 7 days! lol. I am glad that it did come in so fast. The instillation was very simple (i did watch there video,very helpful.) took about 15 min. to hook the harness up ,the time consuming task is running your hot wire to the battery. And that just depends on how picky u are with your work. Then of all things it worked!! lol. It realy does work like it's supose too! e-trailer I give u an A+ Thank u for making my task easy. 5904
Very Good design and relatively easy to install. Works as described, was very impressed that my vehicle wiring harness was spared after the rental trailer I hooked up to deteroiating wiring shorted out. Since I prefer to run wiring along established safe routes within the vehicle (instead of as suggested in the installation instructions and video) an extra 2ft of primary lead wire and and extra foot in the right side signal harness would have been beneficial andf appreciated. 106172
I watched the videos before I bought the T one connector for my Jeep Grand Cherokee. When my connector arrive a few days later I was able to go through the procedures with just a quick check on the instructions. The whole procedure took less than an hour and I had my trailer rolling down the road for an inspection. Everything worked perfectly. I recommend watching all the videos including others you can find on youtube about the etrailer product. 338188
Poor Instructions Product fits great. Instructions have you run the positive lead wire down passenger side, under vehicle, which is the side the exhaust system is on. Very difficult to keep away from heat no places to zip tie it to. I routed wire accross back of engine, zip tied it to existing wire harness, then pulled it through existing hole in fender. Under the vehicle on the driver side, you can zip tie it to the brake lines out of harms way. 1274
by: Mark T.07/08/2011
I am installing this harness this weekend so I cannot give a product review yet, but would like to praise Etrailer's service. Email confirmations were immediate and shipping was prompt! I recieved the harness within 3 days after placing my order! The price (with shipping) was much better than my local RV or auto parts store. This is my second purchase from Etrailer and I'm a satified customer! 18948
by: Ronald Godwin10/13/2011
It works very well but I think the instructions need to be a lot more detailed for most people. It took some time to figure out a few things and the fuse that must be installed does not explain what to do very well at all, (Thats the yellow thing up there in the picture). Other then needing much better instructions it is a great product and I WOULD buy it again without any problems. 25517
Good. but tough to install Our 1998 Grand cherokee DID NOT HAVE the little access panel that is shown in the instructions and photos. That meant taking out several interior panels which was a huge problem since the fasteners usually break. The lengths of wire worked OK, but what a hassle getting access to the vehicle wiring! Our 1997 had the little access door the '98 didn't. 1816
by: Armand L.10/09/2015
I bought this harness for my 95 jeep. Very easy to install, just plug and play. The hardest part was running the wire along the undercarriage, and attaching it. The kit was all heavy duty, and well made, the one thing I would change is the tiny zip ties to use in attaching the wire to the undercarriage. I used some foot long ties that I had on hand which worked fine. 229647
by: Bob P.06/27/2012
Called etrailer.com at noon on Thursday in a bind and needing a wiring harness for my 1997 Jeep Grand Cherokee. With the assistance of the sales woman I placed an order and requested over night shipping. I received a package by noon the next day!!! Hooked up the wiring harness and it worked great!! Just in time for my weekend camping trip with my pop-up camper. 45758
My review is mainly for etrailer and not just the product. First order I placed with them and it was on a sunday morning, got and email that day letting me know the item was in stock, notified on monday afternoon that it shipped, and received it on wednesday. Etrailer will get more of my business and I would recommend them to others. 26315
by: David W05/28/2009
Well made, easy to install Liked the instruction video. It was easier to understand than the written instructions. Everything from ordering to installation was easy and well thought out. It wasn't the lowest price but the website gave me confidence that this was the one for my car and everything was included for an easy install. 1904
by: Steve F02/16/2015
This is an excellent product and a time saver. I almost started splicing wires and found it very troublesome so I researched 4 prong trailer hook ups and found this awesome harness. The video is a must see! Very simple and easy to follow. Now I will have a professional looking job that taught me something about my jeep. 175007
Review would have been excellent except the primary wire from the battery in the right front to the trailer connection area in the left rear was barely long enough. I had to try 3 different routings to get one that would make it. Instructions were clear and the videos were a real help. Service also outstanding. 171742
Great overall experience. My 1996 Jeep Grand Cherokee's taillight wiring was a hot mess. Splice city! I was able to install this unit in under an hour and it works like a charm. The installation pictures on etrailers website were extremely helpful. I got more than I paid for...peace of mind. Giddy up! 254746
by: brian r.05/15/2008
Good but Worked well but the positive wire going to the battery needs to be several feet longer for the 98 Jeep Cherokee Kit. I had to run it on the inside of the vehicle to have enough wire and still barely had enough. Had to remove several interior trim panels in the process. 866
by: Terry N02/10/2016
I originally bought this from my local NAPA store but the plugs were wrong and it didn't fit. etrailers item was plug and play and high quality. I'm very pleased with my purchase. Bought it Monday and got it Wednesday so that was a bonus with the quick delivery. 237474
by: Keith R12/11/2010
Easier than I expected. Follow the video instructions and you can't go wrong. Route wire under truck along driver's side and you'll avoid most of the hot, exhaust system. Product works great! Installed on 96 Grand Cherokee Laredo with the tow package. 3981
by: Cliff W.10/25/2016
Awesome wiring harness, No splicing into the main wiring of the vehicle. Plug and play. Only splice is power wire which is easy and quick. Took me 15 minutes max. to install. I highly recommend this product and Company. Thanks Folks. Cliff 310559
by: clifton m.04/09/2012
the product was packaged very well and all parts were there. other than having a little difficulty getting panel off jeep all the conections and routing whent extremely well and was completed in a little over an hour.and everything worked perfect. 36716
by: Dave Byers06/28/2013
The trailer wiring harness arrived within a few days of ordering and installed in minutes and is working fine.. Everything I needed to make the harness connection was included and I am very happy with the whole ordering process.. thank you 86632
by: Disappointed Customer07/08/2015
I was extremely disappointed in this kit. The T-connectors install flawlessly and very simply; however, the hot wire installation is quite difficult and the directions are of little help. It is not totally a simple, plugin installation. 210274
by: Ken E04/18/2012
the harness was easy to hook up.the t connector is the key. no trying to tap into wiring harness, just plug in.. Then run a small wire from the battery to the harness and hook up a ground wire to frame and you are good to go. 37651
by: Billie K.03/20/2012
It was very easy to install . I am very happy with the product. I wish they gave about six more zip ties in the kit though! Had the harness installed in an hour or less. I would recommend this product to everyone! 34538
by: James S02/18/2016
This wiring harness fit my 1996 jeep Cherokee perfectly, it took me about an hour to install it, I'm very mechanical but by no means a mechanic! It shipped fast and works very well, two thumbs up to E Trailer. 238156
This harness was very easy to install. Had no trouble hooking it up. I would purchase this product again if needed. The shipping was fast. I will be ordering more off e-trailer in the near future. 121316
by: Pete B.06/21/2011
This wiring system was so easy to install. eTrailer.com provided a great online video tutorial of the installation. That helped a lot because the instructions from the manufacture was limited. 17517
The kit contained every thing needed for installation. Clear on line instructional video made it simple. The in-line plugs made connection into my Jeep's wiring harness easy and clean. 24594
Fantastic assistance from staff (Thanks to Tamara W.) Figured out my order and processed immediately. Boxed right, shipped timely, received VERY fast. Great place to shop. 271874
by: Mike A.06/07/2016
I am very happy with the product. It saved me lots of time and money. Was very easy to put in with the Youtube video. Would buy product again if needed without any question. 258747
by: Mike Sims08/07/2016
The customer service was awesome from start to beyond finish. This company keeps you well informed regarding your order. Standard shipping was fast. Thank you etrailer.com 280897
by: Buddy J07/23/2012
Items ordered arrived fast and i received everything I needed. Instructions were included and online video answered all other questions. Great folks to deal with here! 49098
by: Jason C06/22/2012
Wiring harness installed in 30 minutes, super easy being that my 12v power wire was already in place from the old harness. Great service and extremely fast shipping. 45182
by: chris p04/30/2012
easy to install, but fuse line instructions and where to connect it on the black box were not as clear as they could have been. no markings on the black box. 38801
It was very easy to install Everything that came in the package was exactly what I needed. It helped to watch the installation video on youtube. Thanks 1759
by: Ron Hartl03/01/2012
Great Product. Excellent Quaulity. Easy online video instructions. Below average Price. Great Customer Service. it doesn't get much better than that. 32919
by: Phaedra W.02/11/2012
easy to order / recieved in 2 days /easy to hook up / pluged it in / on down the road we went pulling our trailer.. No problems as of this date .. 31488
by: Matt S05/03/2011
It came fast, and installed fast! I just added a little shrink tube over the splices under the hood but it probably wasn't necessary. 12834
by: Clint Powell06/20/2011
trailer harness is working fine. you should put a flyer in your packaging or email a link to your youtube videos of installations. 17418
by: Gerald J. Latiolais01/07/2011
Product shipment Without a doubt, this is the best service I have ever had from a distributor. Thanks !! I'll pass the word. 5177
by: Mark T10/25/2013
Excellent Product , Great Directions , Prompt Shipping , I will definetly purchase more items whem needed from etrailer.com 105190
Haven't had a chance to install yet well packaged and looks like a great product going to install over weekend Thank you 312185
by: chris little06/15/2012
but i think you need to provide better illustratio maybe some pics on here of the installment of said product .ty chris 44220
by: Jasper Pyles10/27/2014
Good product. What made it great was the amazing assistance I got from Nicole. Highly recommended company. 157982
this wiring harness works great ,very easy install.very good price,i did check around. thank you 67278
This was an excellent experience. The part fit perfectly. Install was a snap. Thank you etrailer. 166671
Ask the Experts about this Tekonsha Custom Fit Vehicle Wiring
Do you have a question about this Custom Fit Vehicle Wiring?
At etrailer.com we guarantee:
Highest quality custom fit vehicle wiring for the best price.
Real product know-how.
Most detailed, accurate custom fit vehicle wiring information available.
Information for this part was:
Installations, made easy.
Personalized service for life.
Trusted since 1946.
Info for this part was:
At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.