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T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

Item # 118431
Retail:$105.80
Our Price: $47.56
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Custom Fit Vehicle Wiring

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T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector 4 Flat 118431
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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. Circuit-protected converter guards against shorts. 1-800-940-8924 to order Tekonsha custom fit vehicle wiring part number 118431 or order online at etrailer.com. Free expert support on all Tekonsha products. Great prices and Fastest Shipping for T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
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Tekonsha Custom Fit Vehicle Wiring - 118431

  • 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. Circuit-protected converter guards against shorts.


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 behind tail lights
    • Plug in T-connector
  • Includes circuit-protected tail light converter to ensure that your vehicle's wiring matches that of your trailer
    • Provides protection against electrical shorts and overloads
  • 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: 5 amps per circuit
  • 1-Year limited warranty


Installation

This custom-fit T-One connector plugs into your vehicle's wiring harness, which is located behind the driver's-side and passenger's-side tail lights. You will have to remove the tail light assemblies to access this harness.


T-One Connection Location Points Behind Tail Lights

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.


Circuit-Protected 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.


This converter safeguards itself and your vehicle against possible electrical shorts and overloads with integrated short circuit protection. Just install the connector as indicated and rest assured that the wiring system of your vehicle will remain feedback-free.



118431 Tow Ready T-1 T-Connector - 4 Wire

Installation Details 118431 Installation instructions

This Product Fits The Following Vehicles



California residents: click here



Customer Reviews

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118431

Average Customer Rating:  4.7 out of 5 stars   (87 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. Circuit-protected converter guards against shorts.

by:

Factory like fit. Easy, works perfectly.
Thank
you!



by:
2012 Kia Soul

Hitch for 2012 Kia Soul was the best deal I could find for a class I. Instructions said 30-40 minute install. It may have been if I could get the factory tow hook off the vehicle. Couldn't break the nuts free. Cost me $40 to take to local shop and have them install. Not e-trailer fault though. Otherwise, very good product. Perfect for pulling my little 4x6 trailer.



by:

The car manufacturer and the harness manufacturer could care less for the poor slob that does the installation. On the drivers side I wasted the better part of an hour trying to feed the plugs down the not so clear channel they tell you to use. On the other side the same problem. I then cut the green & red wires fed them DOWN in a few seconds, spliced in connectors and had the job finished in a flash. the manufacturer could spend another 10 cents for connectors and advertise "1/2 hour installation"

Ray G.

8/21/2015

GREAT



by:
2011 Kia Soul

Very easy to install after watching video. Product worked exactly as it was supposed to. Only problem with this would be make wires going across car to passenger side tail light just a little longer it was very close to being to short.

Jim M.

7/12/2015

Has been working fine.



by:
2011 Kia Soul

Purchased this excellent product and it was shipped right away as promised. The tracking feature you provide is outstanding and I was able to follow it all the way to my local post office. Lousy thing was they held it for 3 days, but that's the post office not etrailer.com. The kit worked exactly as promised and after about 30 min wrestling with my bumper it was plug n play! Perfect! I have purchased several products from etrailer.com and the quality, service, and price cannot be beat. I was at a local hitch shop buying a new ball and they asked me where I got my receiver hitch from. I said, etrailer and they said they are going to put us out of business with their prices! I just laughed. Thanks again guys!



by:
2010 Kia Soul

I really disliked needing to drill a hole into the car body for this harness. You'd think they could find a way to use the hitch for ground. Other than that, it was fine. The plugs were nice; they made so that I did not need to splice into the wiring. They fit perfectly. Threading the wiring through the bumper was a bit of a challenge, but I eventually figured it out. I used the zip ties to hide this up and away as much as possible, since I don't really intend to ever actually haul a trailer; the hitch is there for my bike rack.



by:

By all means do not try and cut into your wiring harness in order to get lights for your trailer! Buy this complete kit and 30 minutes after you begin the installation you will be glad you did! All parts snap together as well as the factory connectors. Just be sure and flip the electronic box over so that the green and red wires that go to the passenger side will be in the "down" position. If you don't, the harness is just a bit too short to reach the tail light plug and re-attach the light assembly. Save time, aggravation and possible electrical problems with this neat wiring kit. Tip: Order it with your hitch and save on shipping costs!



by:
2014 Kia Soul

Purchased for a 2014 Kia Soul as it would be easy to connect to lamp socket and not cut into existing wires. The kit arrived, and noticed a wire had bad insulation with bare wire showing, (see the poor quality picture) which I had to cover with electrical tape. Next issue the cable from the drivers side to the passenger side lamp was too short to reach the passenger side lamp socket by 6 inches. This Cable DID NOT WORK WITH A 2014 KIA SOUL, the body is wider than the 2011-2013. Due to lack of time we could not exchange or refund and had to splice extensions into the cable. It worked great after that.



by:

Worked well once installed. Installation would have been easier of there was a little longer wires going from right side to left. Also it would;d be helpful if the instructions suggested exactly where to mount the black box on the drivers side. If you don't get the right spot the tail light assembly won't go back on. A little hard to get that right.

Great product and no cutting and splicing wires and guessing which ones to use etc. Goo customer service and prompt shipping.



by:
2012 Kia Soul

Wow! Do not hesitate to use this company! The customer service is excellent and everything was just as described. We even ordered a wrong item that wouldn't fit and they called us to make sure it was really what we needed. Who does that anymore? No one! Most companies would have just shipped it. We are grateful for the excellent customer service and fast shipping. We have a 2012 Kia Soul and the hitch and wiring fit perfectly and we were able to tow a BBQ pit perfectly with no issues. Thanks for the great service, ETrailer!



by:

The hitch was easy to install, took about 30 minutes. directions were very easy to follow, as were the instructions for the wiring for trailer plug. The only issue is that the ball location is one inch from the rear licence plate. It works but I would prefer more clearance when hooking up a could create a safety issue.



by:
2008 Kia Rondo

This is the second product I have purchased through etrailer.com. The first was a trailer hitch for my 2008 Kia Rondo. In both cases the order was shipped and received very quickly (within 5 days using the cheapest standard shipping). What I realy like is the instructional videos that walk you through the installation. If you google the product and etrailer, you can find the link quite easily (or I'm sure you can navigate there within the etrailer website. After watching the video I installed the trailer hitch without a hitch (pun intended). I have not yet installed this wiring harness, but did watch the video before purchasing to be sure it was something I could do on my own.

For the do-it-yourselfer, etrailer has made life easy!



by:
2014 Kia Soul

I purchased the T-One harness so I would not have to splice into the wiring harness on my Soul. The harness was simple to plug in. Running the wires in the bumper and up the right side of the vehicle is much easier if you have some clearance under the vehicle. I backed up onto a set of ramps but a floor jack and stands would work just as well.
The only real issue I had was with where to mount the black box. The only way I could attach the box between the body and tail light assembly was if I positioned it on an inside flat on the light assembly itself. I ended up mounting it down inside the bumper to get it out of the way and to allow the light assembly to be disconnected completely from the vehicle.



by:
2011 Kia Soul

Installing this couldn't have been any easier. The installation videos really make things simple. I also got the trailer hitch bar and new vent covers for our motor home. All fit perfect and installations were a breeze. Etrailer is a great resource for many many things. Thanks!!!



by:
2007 Kia Rondo

Definitely beats the hell out of splicing/soldering/taping wires while keeping you fingers crossed. Took me maybe 20 min from opening package to testing the harness. Most difficult part was finding a safe path to route the wire from one tail lamp to the other without having the wire come in contact with the exhaust system.



by:

etrailer made it really easy to find a hitch with a custom fit for my car, and the (free!) shipping was FAST. Plus, unlike Amazon, the materials arrived in a package that was NOT ripped to shreds. Bravo! I'll be using this service next time I need to order a hitch or accessories.



by:
2014 Kia Soul

Works great for my 2014 Kia Soul. I had to use a string to pull the passenger's side harness into the tail light fixture area, but was fairly easy to install and the wires tuck in nicely under the vehicle.



by:
Kia Soul

This is the second T-one connector I have purchased. The first is in the mangled rear end of my totaled Kia Soul. The plug and play makes installation easy. No cutting or splicing, just unplug the tail light connectors and plug in the T-one. Routing the wires from one tail light to the other is takes the most time and requires a little planning so that you will be able to secure the wiring; zip ties or twist ties are required for a tidy job.



by:
2007 Kia Rondo

This product is what I needed to put my trailer in use at night. I can drive my 2007 KIA RONDO now without any problem with lights. Thank You for sending them to me so fast. Thanks for thee outstanding service!



by:

Everything fit perfectly, and instructions were laid out well.

Ryan T.

12/18/2014

Still working great



by:
2007 Kia Rondo

This was an easy installation and everything worked great. The online video was helpful, although the written instructions were good.



by:
2010 Kia Soul

I ordered the T-One Wire Harness for my 2010 Kia Soul. It fit perfect, came with easy to follow instructions, and was installed in less than 30 minutes. I will definitely order from etrailer.com again.



by:

Products (hitch and wiring harness) installed quickly and without any problems. Etrailer is a class company. I recommended them to a friend and he is ordering his hitch from etrailer. Keep up the good work.



by:
2013 Kia Soul

Easy twenty minute install on my 2013 Kia Soul+. The only problem I had was finding a spot to mount the the T-wire black box. It does does not fit behind the tail light module so I mounted it behind the fender below the tail light compartment. Works great.



by:

I am so impressed with my tow package and the wiring harness !!!! It was easy to understand the installation instructions. I'd recommend it to anyone GREAT PRIDUCT !!!!!!


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Show More Reviews

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

  • Recommended Hitch and Related Items for 2009 Kia Rondo V6 Towing Camper Trailer
    Trailer hitch fits for the 2007, 2008 and 2009 model years of the Kia Rondo happen to be the same. Any of these model years can be fitted with a light-duty 1-1/4-inch Class I hitch and we have the available product # C11031 from Curt. All you need to add is the hitch ball, such as 1-7/8-inch # 19256 or 2-inch # 19258, along with ball mount # 3594. Choose the ball that matches your trailer's coupler size. The hitch will install using the included hardware and basic hand tools. The only...
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  • Trailer Wiring Availability for a 2013 Kia Soul
    I was able to find a trailer wiring harness that will work on your 2013 Kia Soul, but the Tow Ready Harness # 118431 that you referenced has not been carried over to the 2013 models. Curt recommends the Curt Circuit Protected Powered Converter # C56496. This is a kit that will require you to hardwire to the wiring of your Soul, but it will work well for you. I attached installation instructions and an install video for you to check out.
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  • How to Install Tekonsha 118637 Trailer Wiring Harness on 2014 Kia Soul
    The Tekonsha # 118637 trailer wiring harness is a confimed fit for your 2014 Kia Soul. I've linked you to both the installation instructions as well as to a video showing the harness being installed on a 2014 Soul like yours.
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  • Will the Curt Hitch # C11031 Fit on a 2010 Kia Rondo with V6 Engine
    Yes, the Curt Trailer Hitch, item # C11031, will fit both the 4 and 6 cylinder models of the 2010 Kia Rondo, so it will fit. You may also be interested in the following items to complete your Class I towing setup. T-One Trailer Wiring Harness, item # 118431 Curt Drawbar, item # C45023 1-7/8 inch hitch ball, item # 19256 2 inch hitch ball, item # 19258 Hitch Lock, item # e98879 Pin and Clip, item # PC2
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  • Recommended Hitch For 2010 Kia Soul Towing an Aluminum Boat
    The hitches that are available for your 2010 Kia Soul are all Class I 1-1/4 inch hitches with a 200-lb tongue weight capacity and a 2,000-lb towing weight capacity. You will want to check your owners manual or with the Kia dealer for the towing capacity of your Kia Soul. If it is lower than the 2,000-lb capacity of the hitch you will need to go by that lower number as the maximum weight capacity you can tow. You will want your aluminum boat and trailer, loaded with your cargo, to be...
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  • What Hitch is Recommended for the 2010 Kia Soul to Tow a Boat Trailer
    The three 1-1/4-inch hitches we offer for the 2010 Kia Soul are all Class I-rated and have a tongue weight capacity of 200-lbs. These light-duty hitches are ideal for use with accessory items like bike carriers or for light towing. The link provided will take you to our product page for all three hitches. All require temporary lowering of the exhaust for installation. Your Soul owners manual will indicate if it is rated by the manufacturer for towing a trailer; if so the manual will indicate...
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  • Availability of Trailer Wiring Harness for 2012 Kia Soul w/ LED Taillights
    We do indeed have a trailer taillight wiring harness that's compatible with a 2012 Kia Soul with the LED taillights. You'd want to use part # 118637. The wiring harness would plug inline with the factory wiring connection at the taillight assemblies, and one wire would need to be ran to the positive battery terminal. The # 118431 wiring harness you mentioned is only a fit for Soul models without the LED taillights. I'll link you to some FAQ articles that you might find helpful.
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  • Hidden Hitch Pilot Brake Controller # 80550 Installation in 2012 Kia Rondo
    To install a brake controller in your 2012 Kia Rondo you will need a Brake Controller Install Kit # ETBC7. The Hidden Hitch Pilot Brake Controller # 80550 will wire into the vehicle using this kit. Your Rondo needs to have a working 4-pole flat trailer connector in place; if it does not already have one you can use # 118431 from TowReady, which is a simple plug-and-play installation. This harness connects at your taillight assemblies. I have linked the written installation instructions...
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  • Parts Needed to Add Brakes to 1992 Coleman Arcadia Pop-Up Camper
    Based on your manual indicating 7" brakes it is probably a 2,000 lb axle. That should be a 4-bolt brake flange on the axle as well. Try checking your axle tag to see if you can verify this. The capacity may be listed, or it can be found with the serial number. You will need the following parts to add brakes: -Dexter Trailer Hub and Drum Assembly for 2,000-lb Axles - 7" - 5 on 4-1/2 # 8-257-5UC3 -Dexter Electric Trailer Brake Kit - 7" - Left and Right Hand Assemblies - - 2,000- to 2,200-lbs...
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  • Troubleshooting Tekonsha T-One Harness Causing Tail Light on 2015 Kia Soul to Go Out
    The Tekonsha T-One Vehicle Wiring Harness # 118431 that you mentioned is only a confirmed fit for the 2015 Kia Soul if it does not feature LED tail lights. I first just recommend making sure you don't have LED lights on your Soul which may cause issues like what you're describing with this particular harness plugged in. If you do have the LEDs then the correct trailer harness is actually the Tekonsha # 118637. If you don't have LED lights I recommend making sure the T-connectors are fully...
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  • Trailer Wiring Harness Recommendation for a 2011 Kia Soul
    Yes, the Tow Ready Custom Fit Vehicle Wiring # 118431 that you referenced is confirmed to fit your 2011 Kia Soul so it would work on your vehicle. I attached an install video for you to check out. For a hitch I would recommend the Draw-Tite part # 24839. Aside from that all you would need is a ball mount and hitch ball like part # 19256.
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  • Trailer Running Lights Only Working on Passenger Side with a Kia Soul
    First, I am showing wiring harness # 118431 for a 2010 Kia Soul, so hopefully that is the one you are using. This sounds like a ground problem on the trailer. The running light circuit is on a different wire than the stop and turn lights, so it makes sense that those are working correctly. On the trailer, take a look at the offending light. Trailer lights usually ground through the mounting studs, unless there is an obvious ground wire. While back there, check that the bulb is intact. In...
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  • Do the 2013 and 2014 Kia Soul Use the Same Draw-Tite Trailer Hitch, Wiring Harness
    The 2013 and 2014 Kia Soul will not use the same model of Draw-Tite trailer hitch. The 2013 Kia Soul will use part # 24839. The 2014 Kia Soul will use part # 24915. I have included installation instructions for both parts for you to check out. The recommended wiring harness, however, is the same for both vehicles. That harness is part # 118431. See the installation instructions for this wiring harness linked elsewhere on the page. I have also included a link to a video of Draw-Tite trailer...
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  • Does Trailer Wiring that Fits 2007 Kia Rondo Require Additional Converter Box
    The trailer wiring harnesses that fit your 2007 Kia Rondo like the Tekonsha part # 118431 do not require an additional converter box as the only box needed comes with the kit. This would work well with the Curt hitch part # C11031 that fits your 2007 Kia Rondo as well.
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  • Compatibility of Curt Class I Receiver Part # 11110 with 2011 KIA Soul
    All hitches we offer for your 2011 Soul, the Curt # C11110 and the Draw-Tite # 24839, are compatible with all models of the vehicle. All three hitches are pretty much identical in appearance, weight capacity and installation procedure. If you're only needing the hitch as an attachment point for a bike rack or cargo carrier, I'd recommend the Draw-Tite # 24839. If you are planning on using your receiver to tow a small trailer, you will need the wiring harness, part # 118431 and either...
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  • Installing a Brake Controller, 7-Way and 4-Way Trailer Connector on a 2010 Kia Soul
    If the trailer you plan to tow with your 2010 Kia Soul has a 7-Way connector then it probably has electric brakes or needs 12 volt power for trailer accessories. If it has electric brakes, that would mean you would need a brake controller to utilize all the functions of the 7-Way. To install a 7-Way on the Soul, you would first need to install a 4-Way. The 4-Way for your Soul is the Tow Ready Custom Fit Vehicle Wiring, # 118431. I have included a link to a video installation and instructions...
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  • Wiring Harness With Easy Install For 2009 Kia Rondo
    There has been some issues with the green wire being too short to install the Curt T-Connector Vehicle Wiring Harness part # C56222 on the Kia Soul without splicing in extra wire. I do not believe you will have that issue with the Rondo because we have not had any complaints at all about the Rondo and the Curt harness. However, I recommend to go with the Tekonsha brand harness part # 118431 for the 2009 Kia Rondo because the Tekonsha brand is more reliable and tends to last a bit longer....
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  • Trailer Wiring Harness for a 2012 Kia Soul Luxury with LED Tail Lights
    I spoke with my contact at Tow Ready and for a 2012 Kia Soul with LED tail lights, you will need to use wiring harness # 118637. This harness will need to be hardwired into the vehicle using the included circuit tester to find the appropriate wires on the vehicle to tap into. It also requires a direct connection to the vehicle battery to power the trailer lights. I have included a link to the installation instructions for you to view.
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  • Trailer Hitch and Wiring for a 2008 Kia Rondo
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  • Availability of Trailer Wiring Harness for 2013 Kia Forte Koup
    I spoke with my representative at Tow Ready, who tells me that because the Forte Koup is not often used as a tow vehicle, a plug-and-play trailer wiring harness like the # 118431 you mentioned is not offered. For your Forte Koup, a universal fit hardwired harness like the # 119178KIT is recommended. The 118431 fits the 2007-2010 Kia Rondo or the 2010-2012 Kia Soul, but not your Forte Koup.
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  • Ground Clearance with Draw-Tite Trailer Hitch Installed on a 2012 Kia Soul
    On the 2012 Kia Soul, the Draw-Tite trailer hitch # 24839, measures 9-1/2 inches from the top of the receiver opening to the ground. From the bottom of the receiver it would be 8 inches. I have included a video showing a typical installation on a 2012 Kia Soul that shows this measurement. If you plan on doing some towing you will need ball mount # 3593, hitch pin and clip # PC2, a 1-7/8 inch ball # 19256 or a 2 inch ball # 19258. For trailer wiring you can use # 118431 or, if you have...
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  • Trailer Hitch and Wiring Recommendations for a 2010 to 2012 Kia Soul
    First, you will want to consult the owners manual of your Kia Soul to determine if it can be used for towing. Some vehicles can have a trailer hitch, but only use it with something like a bike rack. The owners manual should have the specifics on the capabilities of your vehicle. On a 2010 to 2012 Kia Soul, there are a couple trailer hitch options. If you determine it can be used for towing I recommend the Draw-Tite #24839. It comes with a hitch pin, and clip. You would need to add a ball...
    view full answer...

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Laura H
Updated by:
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Employee Wilson B
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Employee Alexander C
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Employee Isabelle B
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