T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
(228 reviews)
Price: $44.13
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T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
Item # 118325
Retail:$74.63
Our Price: $44.13
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Tekonsha Custom Fit Vehicle Wiring - 118325
- Custom Fit
- Trailer Hitch Wiring
- 4 Flat
- Converter
- Tekonsha
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 - no cutting, splicing or tapping required. Includes tail light converter.
Features:
- Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights
- Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
- Connects quickly and easily - no cutting or splicing of wires
- Locate connection points along frame rail
- Plug in T-connector
- Includes a tail light converter to ensure that your vehicle's wiring matches that of your trailer
- Constructed of 16-gauge bonded wire
- Comes with dust cap for 4-way flat connector
Specs:
- Maximum amperage:
- Stop/turn lights: 2.1 amps per circuit
- Tail lights: 4 amps per circuit
- 1-Year limited warranty
Installation
This custom-fit T-One connector plugs into your vehicle's wiring harness, which is located beneath your vehicle, along the driver's-side frame rail.
Once installation is complete, the 4-way flat connector will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure.
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.
Tail Light Converter
A tail light converter 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 vehicle's three-wire system need to be combined so they are compatible with the wiring system of your trailer. The tail light converter combines 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 vehicle operate.
118325 Tow Ready T-1 T-Connector - 4 Wire
Installation Details
This Product Fits The Following Vehicles
- 1994 - 2008 Mazda B Series Pickup
- 1994 - 2008 Mazda B Series Pickup
- 1998 - 2001 Mazda B Series Pickup without factory tow package
- 1993 - 1999 Ford Ranger
- 1993 - 1997 Ford Ranger
- 1998 - 1999 Ford Ranger without factory trailer connector
California residents: click here
Customer Satisfaction Score:
98% were satisfied with this product
2% of customers were not satisfied
- Wrong item was ordered
- Did not arrive in time
Customer Reviews
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118325
Average Customer Rating: 4.8 out of 5 stars (228 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 - no cutting, splicing or tapping required. Includes tail light converter.by: 08/12/2023
Wiring is NOT conventional..
None of the harness wires matched up to the flat 4 wiring.
Red was yellow green was brown etc.
And wiring or color ceding was included with the 7 pin harness
by: Frank 02/03/2024
Great communication with sales. Any problems are handled quickly and professionally. Shipping is quick.
by: B.gump11/02/2019
One year ago I bought this wiring harness for my 1999 Ford Ranger XLT after trying to repair and fix the pigtails that the previous owner of my vehicle installed. After installing this system, I noticed an immediate benefit of having it plug into the existing factory wiring harness for the lights everything works phenomenal and perfectly every single day that I hook up my trailer. In the year that I've had it I have not had to troubleshoot lighting issues especially with your running lights on no issues whatsoever everything runs perfect! don't be like me and buy a bunch of other stuff like additional pigtails trying to fix what someone else has done just buy this system it's worth the money and go for it! I was so confident in this system that I just installed wiring and a hitch on a 2018 Ford Transit t250 and that system is phenomenal too!
by: Brad.G10/01/2020
1999 Ford Ranger
So to start, I bought this 3 years ago & installed it on my 99 ford ranger after giving up on the pigtails that were previously used as trailer lights. So, the system is designed to either run normal or just stop in the case that something goes haywire in the module. This is what happened in the old system module. Therefore I bought a new one & my trailer lights are running like new again! I figure since I'm pulling a trailer 8 months a year, spending ~$40 every 3 years is not a bad deal. It's easy enough to install, lowet your spare tire. Locate the factory wire harness (usually up behind hitch & behind the bumper) disconnect lights, insert the module with addition of silicone paste, snap together, put it back in general area, route your wire & raise your spare tire. 15 mins max. & done! Super easy!
by: Aaron 07/26/2023
Seems to be a good product. Attached plugs as described and fits great. Tested all lights on the truck and plugged into 3 different trailers. Everything works like it should.
by: Colin 05/30/2021
Small, well-built wiring harness is just what I need for my vehicle, and customized to fit it, so no guesswork or trying different combinations needed.
Colin
5/31/2022
Its been holding up, but I have not connected it in nearly a year. I will try to do so later this week, because I am finally moving the trailer after upgrading it.
by: Tom N.05/27/2014
1996 Ford Ranger
I installed this on a 1996 Ranger. I removed the rearmost bumper mounting bolt on each side and then loosened the other two. This allowed the bumper to drop down far enough to easily access the wiring. At that point you unplug the factor harness and plug in the trailer wiring. I drilled one hole behind the license plate to hold the wiring harness in place and the installation was complete.
Tom N.
5/28/2015
No problems. Easy installation.
by: T for Texas06/22/2017
1996 Ford Ranger
Plug and play. Can't beat it. I bought one of these for my 92 Ford Ranger and one for my 96 Ford Ranger. 2 different part numbers. Simple as unplugging the harness where the bed attaches to the frame at the rear and plug this in between the two plug halves. EZ-PZ. I have used etrailer before and i will use them again if i need to.
by: L King07/06/2019
We bought aTekonsha custom fit vehicle wiring for wiring up the trailer and it was perfect. Wiring a trailer has never been so easy, we made a great choice. etrailer is very good to work with and they deliver fast. I wouldn't hesitate to use them again.
L K.
7/7/2020
Good as when we first put it on. Never a problem with it, very happy
by: Ray F.09/02/2016
Mazda B2300-Series-Pickup
Product arrived on-time and thanks to the helpful instructions, I was able to install this wiring harness in a matter of minutes. My son is out using the truck w/trailer to mow lawns or I would take a picture of the installed harness. I am very satisfied with the product.
Ray F.
9/2/2017
After one year, and many trailer tows, the harness is still working perfectly.
by: Scott 11/29/2015
1994 Ford Ranger
Product was as described. It plugged right into the original harness everything thing is great. I went cheap on shipping and still had the harness in 4 days. I will not go anywhere else for trailer parts. Awesome job
Scott
11/29/2016
It still works just like it did when I installed it.
by: Dan02/26/2019
1997 Ford Ranger
I was able to install the part that I bought on my truck, but I didn't realize that the 4-pole flat output doesn't have a wire for a brake light, and I need a wire for a brake light. Do you have any suggestions for a supplementary/replacement part that I could buy from you guys that would include a wire for a brake light? I have a 1997 Ford Ranger, and the T portion of the product that I bought works just fine - the only issue is that the brake light wire is lost somehow in the conversion.
Mike L.
2/27/2019
This wiring harness includes a taillight converter, which takes the brake lamp and turn signal signals and combines them onto one circuit. Many vehicles use whats called a separate taillight system, with separate bulbs for turn signals and brake lamps. Most trailers, however use the more simple combined system that carries both signals on the same circuit.
by: Jay06/25/2023
Worked just fine when I got it, but it seemed like a long time to get it 250 miles down the road from where I’m at.
by: Jeff08/17/2023
1994 Ford Ranger
Fast shipping excellent product, installed in five minutes!
by: phillip09/12/2015
1993 Ford Ranger
the product was as described, fit well no problems, needs a better way to attach connector to bumper. still plug and play.
Phillip
9/14/2016
still satisfied with the product, no problems.
by: Brent W12/17/2020
The wiring harness was easily installed and has functioned perfectly for a year now.
Brent W.
12/18/2021
Moved the harness to a second Ranger and it still works as well as the first day I used it!
by: Randall07/15/2017
1994 Ford Ranger
Awesome hitch wiring for my ford ranger. I only had to unplug current wiring and plug in this adaptor and that was all. I would like to let everyone know that if your ford ranger (mine is 1994) needs wiring harness for a hitch this is the exact fit and is still working 1 year later.
by: Jim R.05/25/2015
1999 Ford Ranger
Couldn't be happier with the wiring harness. It plugged directly into the wiring harness on the truck and had enough length to route it along the frame and secure it with wire ties in several places. The converter came with self-stick adhesive which made mounting a breeze, although I also secured it with a small bolt through the mounting hole on the converter. During the installation, I used 1/2 inch plastic ribbed wire conduit to protect the wiring harness from chaffing, although it is not necessary. I installed it on a 1999 Ford Ranger, which has separate turn signal lamps from the tail/brake lamps. If you have a similar vehicle, I highly recommend this product. Also shipping was extremely fast.
by: Rayday05/31/2015
1999 Ford Ranger
The etrailer was a great experience and I got exactly what I wanted thanks again etrailer
Rayday
5/31/2016
Excellent. No problems at all
by: ODJ06/17/2016
1994 Ford Ranger
Great product thus far. The installation was simple (the connector is right above the back of the bumper), and between the supplied zip tie and the adhesive backing on the plastic box, it was easy to mount securely to the back of the bumper mount structure. Now I just need to figure out how to securely and cleanly hide away the wiring while it's not in use.
The whole experience with etrailer has been great so far, btw. Everything I ordered shipped in sturdy boxes, was well packaged, and shipped quickly.
by: Michael B.07/28/2014
2010 Ford Ranger
I ordered a trailer wiring harness for my Ford Ranger. It arrived several days earlier than scheduled, which is always appreciated! Installation was very easy, took only about 10 minutes. It plugged right into the factory wiring harness. A quick check with the voltmeter to verify everything works, which it does, and I'm ready to tow! Thanks e-trailer!
by: John W.09/04/2017
1993 Ford Ranger
This product fit the factory wiring harness as advertised. Made adding the trailer wiring connection very simple without creating new problems in the vehicles wiring harness. I would buy this product again if I needed to add trailer wiring to another vehicle.
by: Jon02/07/2013
I'll tell ya what, this made wiring for my trailer a no-brainer. I found the connection on the rear underside of my truck, separated, and inserted the wiring harness, and i was off and running! (just had to make sure everything was secure).
thanks guys, custom harness makes this easy for someone who is not so truck or wire savvy.
by: Jerry begley05/20/2019
1997 Ford Ranger
Correct product, fast and reasonable shipping. Installed in 10 minutes. Can’t ask for much more than that. Thank you!!!
Jerry B.
5/21/2020
No problems, still working
by: Ben G.02/12/2012
1994 Mazda B Series Pickup
Bought the T-One connector and the 4 pole to 7 pole connector. Regular Shipping service was ok, alittle slow, but not etrailer.com's fault.
Installed them in about 5 minutes and they work perfect together. Going hunting in a week with my "new" used pop up trailer, lights and everything work great!
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228
Show More Reviews
See what our Experts say about this Tekonsha Custom Fit Vehicle Wiring
- Ford Ranger Trailer Wiring RecommendationThe recommended trailer wiring harness for your 1997 Ford Ranger is the Tow Ready # 118325. As long as you don't exceed the amperage ratings of the wiring (Stop/turn lights: 2.1 amps per circuit and Tail lights: 4 amps per circuit), you would be just fine.
view full answer... - Adding a Brake Controller to a 1996 Ford RangerFirst, if your 1996 Ford Ranger came with a factory 4-Way trailer connector or you installed an aftermarket 4-Way, you will need to add an # ETBC7, if the trailer has a 7-Way blade style connector, or an # ETBC6, if the trailer has 6 pole connector. If you need to add a 4-Way, you would use # 118325. If you add a trailer connector or it already has one, the signals for the tail lights on the trailer are already converted down to the correct signals. In order to operate the electric brakes...
view full answer... - Trailer Wiring Harness Troubleshooting and Recommendation for a 1994 Mazda B-4000The Tow Ready T-One Vehicle Wiring Harness, # 118325, is the correct wiring harness for the 1994 Mazda B-4000. It provides a 4-pole flat trailer connector for your vehicle. It connects to the taillight wiring harness along the inside of the left rear frame rail. This harness will have a connection point with connectors matching the ends of the T-connector adapter. You might want to also check the yellow wire going into the converter to see if you are getting power going into the converter....
view full answer... - Tail Lights and/or Brake Lights On and Use Turn Signal One side Brightens-Other Side Light Goes DimIt sounds like you have one of two problems. Either the wiring on the 1995 Ford Ranger is not converted as it should be to allow the brake and turn signals to work on the same circuit correctly, or there is a ground issue on the trailer that is showing up when the brakes and turn signals are applied at the same time. If your trailer wiring does not have an inline converter, like the black box on the # 118325 T-One Harness, then you will need to purchase one and install it. The #118325...
view full answer... - 4-Pole Trailer Connector for 2021 Ford RangerThe Tekonsha # 118325 won't fit the 2021 Ranger. Instead, you'd need to use part # 22124 if your truck isn't equipped with the factory 7-way connector. You can then use either an adapter like # 47345 or a T-harness like part # 118384 which would install inline between the 7-way and the harness provided by the # 22124. I'd recommend the T-harness versus the adapter, as the adapters are easily misplaced.
view full answer... - Will Curt Trailer Hitch 13138 Fit a 1999 Ford Ranger With Dual ExhaustThe Curt trailer hitch # 13138 bolts to the bottom of the frame rails so provided no part of the exhaust is in between the frame rails where the hitch will be present (see instructions and video I have linked for you) having dual exhaust that exits straight from the back of the truck should not be an issue. If you plan on doing some towing I recommend the etrailer ball mount kit # 989900. It comes with 2 ball mounts, 2 balls, a hitch pin with clip, and a storage bag. For wiring use # 118325...
view full answer... - Trailer Wiring Harness for a 1993 Ford RangerThe separate brake lights and turn signals on your 1993 Ford Ranger is called a 3-wire or separate system. These systems require a converter, which is not uncommon, to make them compatible with the 2-wire or combined system used by trailers. The wiring harnesses for your Ranger have converters built in. You can use # 118325 which will tee in line with the truck's tail light wiring. I have included a link to the instructions for you.
view full answer... - Trailer Lights Not Working with Wiring Harness Installed on a 1995 Ford RangerTo determine definitively if the converter is bad use a circuit tester like # PTW2979 to test the wires going into the converter box. If the signals are correct going in, test the 4-Way end. If they are not correct coming out of the box then the converter is bad and it will need to be replaced. You will not be able to just eliminate the box. The issue is that the vehicle has what is called a separate 3-wire system meaning that all the functions are on separate circuits (brake lights,...
view full answer... - Troubleshooting Turn Signals Not Working On Trailer Pulled by 1999 Ford RangerThe Curt # C55325, is the correct wiring harness for your 1999 Ford Ranger, and it does have a converter. Your trucks turn signals are separate from the brake light circuit on your Ranger. There could also be a ground problem. The taillights ground through the mounting studs on the trailer. Check to see that there is no dirt or corrosion that could cause a bad ground. Next, check the ground at the trailer connector. If you find no ground problems, you will need to check the wiring all...
view full answer... - Trailer Hitch Recommendation for a 1998 Ford RangerThe Curt Hitch part # 13138 that you referenced has been confirmed as a fit for your 1998 Ford Ranger so it would be the hitch for you to go with. There will be some drilling required for installation of this hitch. I attached an install video for you to check out that shows the hitch being installed on a similar 1999 Ranger. If you wanted to do some towing you might be interested in etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch drop...
view full answer... - Using Trailer Lights on a 1997 Ford Ranger with Separate Turn Signals and Brake LightsThe 1997 Ford Ranger has separate turn signals and brake lights. Trailer lights have combined brake lights and turn signals. What you will need to do is use trailer wiring harness # 118325 which plugs into the factory tail light connectors on the truck (or if those are gone you can cut off the end that plugs into the vehicle and hard wire it in). If you have to cut off the end that plugs into the vehicle tail light connectors then hardwire it as follows: brown connects to vehicle running...
view full answer... - Trailer Hitch and Wiring for a 1999 Ford Ranger FlaresideYes, the Curt trailer hitch # 13138 will fit your 1999 Ford Ranger flareside. The video I have linked shows installation on a regular bed but it will be the same on your model. If you plan on doing some towing I recommend etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch drop and one with a 2-3/4 inch rise or 4 inch drop. It also includes a 1-7/8 inch ball, 2 inch ball, hitch pin with clip, and a storage bag. If the ball mount kit does not...
view full answer... - Trailer Hitch to Fit with Full Size Spare Tire on a 1995 Ford RangerCustomers have found that Curt trailer hitch # 13019 fits without having to remove the spare tire. More customers actually commented on this for hitch # 13138 with several of the reviews stating that that the hitch fits with the spare without any problems. Based on the customer information I would go with # 13138 for your 1995 Ford Ranger. I have linked a video showing installation for you. I also recommend etrailer ball mount kit # 989900. It includes 2 ball mounts, 2 balls, a hitch pin...
view full answer... - Troubleshooting Trailer Brakes that Lock Up After Installing 4-Way to 7-WayDid the trailer ever have a 6-way installed on it? There are two common ways that 6-ways get wired and the only difference is that the 12 volt and the brake output circuits are swapped and this causes what you described. But the good news is that all you need to do currently is swap the two circuits and the brakes will stop locking up.
view full answer... - How to Install a 4-Way Trailer Connector on a 1994 Ford Ranger TruckIf your 1994 Ford Ranger does not currently have any trailer connector, the simplest way to install a 4-Way plug would be to use custom plug-in wiring harness # 118325. This harness would be installed at the factory connector that is located underneath the rear of the vehicle, along the inside of the left rear frame rail. I have included a link to the instructions below, if needed. The # 37185 adapter would convert an existing 4-Way plug to a 7-Way. If you need to adapt to a 7-Way plug,...
view full answer... - How to Wire a Towed Vehicle With Seperate Turn and Brake Cicuits on Towing VehicleIf the vehicle you are towing with has separate stop and turn signals then it will need to be wired with a Modulite converter so that it can run the lights on the vehicle you are towing that does not have separate turn signals and stop lights. If the vehicle you are towing with is already setup to tow a trailer then the Modulite converter is most likely already installed. If you are towing with the 1994 Ford Ranger mentioned above then you will need to wire it with a 4-way connector that...
view full answer... - Trailer Hitch Recommendation for 1996 Ford Ranger SplashFor your 1996 Ford Ranger Splash the Draw Tite hitch part # 75082 is the best option as it has more than needed towing capacity, is mostly hidden, and installs easily. I attached an install video for this for you to check out as well. If you need trailer wiring too the Tekonsha kit part # 118325 is very easy to install and very reliable.
view full answer... - Trailer Tail Lights and Running Lights Do Not Work When Connected to 1994 Ford RangerThis is a strange situation because on a trailer, the brake lights and turn signals are on the same circuit. Unless your trailer has turn signals that are separate, it should be a standard 2 wire system. What may be occurring is a bad ground, a alternative wiring situation on the trailer, or a bad converter box. First, testing the converter is simple. Start by disconnecting the trailer. Next, use a circuit tester like # PTW2993 to first test the signals going into the converter and then...
view full answer... - 4-Way Trailer Wiring Harness Recommendation for 1999 Ford RangerWhat you need is a 4-way trailer wiring harness for your 1999 Ford Ranger. The kit you want is the T-One part # 118325 which is a confirmed fit. It installs by plugging in line with the taillights of the truck. I attached an install video for this for you to check out as well.
view full answer... - Recommended Brake Controller and Wiring for 1999 Ford Ranger Pickup TruckFor your 1999 Ford Ranger, there is not a 7-way that does not require spicing. The good news is you won't need to spice every wire and splicing for this installation is not difficult with the correct wiring kit. If you do not have the factory trailer connector, then I recommend the T-One wiring harness # 118325 to start. This harness plugs into your factory wiring harness located beneath your vehicle along the driver's side frame rail. If you do have the factory 4-way, then you can...
view full answer... - Troubleshooting Broken Ground Pin on Trailer Wiring Harness for a 1994 Ford RangerThe only wiring harness we carry for the 1994 Ford Ranger is the T-One Vehicle Wiring Harness, # 118325, that you have referenced. The black converter box does contain some electrical components that could potentially go bad. But if you are consistently having a trouble with the same wiring harness, it may be a symptom of another problem. You did mention the ground post breaking off. This could occur if there is corrosion build up in either connector, making it difficult to connect and...
view full answer... - Troubleshooting Trailer Turn Signal and Brake Lights Not Working On 2004 Ford Ranger Factory 4-WayThe fuses for the trailer turn signals on your 2004 Ford Ranger are in the engine compartment fuse panel. They are 7.5amp fuses at locations 38 and 42. It is strange that they separated the fuse for the trailer running lights as it is in the passenger compartment fuse box at location 2. It has a 10 amp rating.
view full answer... - Trailer Hitch and Wiring Recommendations for a 1998 Ford Ranger FlaresideReese and Draw-Tite are the same. Same parent company, design, everything but the sticker. I recommend Draw-Tite trailer hitch # 75082 for your 1998 Ford Ranger Flareside. This hitch was designed for vehicles with the factory installed step bumper. I have linked a video showing an example installation for you. If you plan on doing some towing I recommend etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch drop and one with a 2-3/4 inch rise...
view full answer... - Brake Controller Recommendation for a 2000 Mazda B Series PickupI recommend using the Curt TriFlex Brake Controller # C24VV with the Pigtail # C51515 for your 2000 Mazda B Series Pickup. I like this brake controller because it is a cost-effective proportional controller that comes with a limited lifetime warranty. You could possibly have some sort of OEM wiring under your driver's side dash if your pickup came with the factory tow package but I'm not entirely sure. If you can't find any wiring then we need to add some so you can control the brakes on...
view full answer...
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Info for this part was:
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Expert Research:
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Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
John H
Expert Research:
Adam R
Video by:
Joshua S
Test Fit:
Nicholas E
Updated by:
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Updated by:
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Updated by:
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Updated by:
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Installed by:
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Katrina D.
8/25/2023
I do see that this harness is showing that it is not a confirmed fit for the 2017 Jeep Cherokee.