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Trailer Wiring > 2000 > Chevrolet > Express Van

2000 Chevrolet Express Van T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

Tow Ready Custom Fit Vehicle Wiring

(25 reviews)

Code:   118377



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2000 Chevrolet Express Van - T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

Quickly and easily install a 4-way trailer connector on your Chevrolet Express Van with this custom wiring harness. T-One connector plugs directly into existing wiring - no cutting, splicing or tapping required. Includes tail light converter.


  • Provides a 4-way flat trailer connector at the back of your Chevrolet Express Van 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 in rear cargo area
    • Plug in T-connector
  • Includes a tail light converter to ensure that your Chevrolet Express Van's wiring matches that of your trailer
  • Constructed of 16-gauge bonded wire
  • Comes with dust cap for 4-way flat connector


  • Maximum amperage:
    • Stop/turn lights: 2.1 amps per circuit
    • Tail lights: 5 amps per circuit
  • 1-Year limited warranty


This custom-fit T-One connector plugs into your Chevrolet Express Van's wiring harness, which is located behind the driver's-side and passenger's-side interior trim panels in your cargo area. You will need to remove the trim panels to access this harness.

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.

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 Chevrolet Express Van'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 Chevrolet Express Van operate.

118377 Tow Ready T-1 T-Connector - 4 Wire

118377 Installation InstructionsInstallation Details 118377 Installation instructions

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.

Video Transcript for Trailer Wiring Harness Installation - 2002 Chevrolet Express Van

Today on this 2002 Chevrolet Express we are going to install part number 118377 from Tow Ready. This T connector actually connects on both sides of the vehicle behind the tail lights so we are going to have to get inside the vehicle to do our install. We will show you the first T connection we are going to make and we are going to start with the half with the red, yellow, and brown wire and the white wire and that is going to match up right here. There is a little tab that you have to push down and pull everything apart and the T connector fits in between. 00:33

We can pretty much leave this alone for now and then we will deal with the other half of the T connector with the single green wire and that will get ran over across the top of the vehicle over to the passenger side. The same thing is going to apply here, push down the tab and pull it apart and just install the connector. Since it is a work van that is why we are going to run our wire up and across over top to follow the factory wire harness. The next thing we need to do is deal with the converter box and the 4-pole wiring that should be pretty easy to do. We are going to hide everything behind the sheet metal right here and thread it on through and pull it out the bottom. 02:02

Now take the adhesive here and actually attach to the converter box on the back side of the sheet metal. At this point we have an option. The first option is to leave it like this and hide it on the inside when we are not using it and pull it out and shut the door on it when we need to use it. All you have to look out for is to stay away from the latch and you will be fine. In this case we are going to run it outside and what we are going to do is run it along this edge right here, we are going to pull up the seal and make a notch in the sheet metal so we can run it down to the hitch. We are going to pull back the weather strip and we are going to cut off a piece of the sheet metal and just knock it back into itself so it has a nice round edge and not cut. We will knock everything back onto itself to get rid of any sharp edges and we can just route our wire through there. What we are going to do next is give ourselves a little loom clamp and we are going to attach it right behind the sheet metal to help keep the wire out of the way. Wrap around the 4-pole wire and adjust the way you like it and just run a self tapping screw into the sheet metal. Lets our harness on through to the bottom and if you can run and route the wire above the bumper mount behind the bumper and push it on over towards the hitch. That will be the most direct route. Take the excess wire and attach any way you see fit. With that, that will finish our install of part number 118377 from Tow Ready on our 2002 Chevrolet Express.

Customer Reviews

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118377

Average Customer Rating:  5.0 out of 5 stars   (25 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.

- 118377

by: Van Ngo05/23/2011

After spending a week looking at couple auto part stores a trailer connector for may work van 2001 GMC Savana, no one has it. One auto service told me that they need to check out wire by wire and take a time. Uhaul may do it but expensive. I jumped on Internet and found the T-One 118377 Wiring Harness from, cost less than $40.00. It took me only 10 minutes to finish the job. I am really happy with Etrailer super fast service/shipment and very clear instruction. It is excellent place to shop when you need help. 15184

- 118377

by: Luke B.03/29/2012

Product was exactly what the website said it would be and installed just like they told me it would. As far as I know, everything is working great and I would use this company again, if I ever need anything that has to do with towing! 35485

- 118377

by: Mike Drone01/07/2012

This wiring kit is well worth the money. It was very simple to install and pluged right in to the trailer brake wiring kit they sell, which was also worth the money. 29251

- 118377

by: Frank d11/05/2014

Very simple to install . No issues and the sales people were friendly and knowledgeable . Very satisfied from buying it to receiving it and finally installing it. 159587

- 118377

by: Chuck W.07/30/2012

This took all of five minutes to hook up. Easy ordering, easy shipping, easy install, great price. 49786

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by: Del R.11/19/2012

the video you sent with your email was so easy and such a help in installing the wiring. 59716

- 118377

by: robie r06/13/2013

Great service and product.simple to shipping. Thank you again. 84519

- 118377

by: charles02/12/2015

very good product.solved my wiring problems,easy installion,fast shipping. 173406

- 118377

by: Rafael04/10/2014

Product was delivered fast and easy to install. Highly recommended 124590

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by: Mike H05/10/2013

I never imagined anything being as easy to install as this was. 79746

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by: Rob p09/20/2013

Everything was easy , from placing the order to installation 100784

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by: John03/28/2013

Great product, excellent price, and wonderful people!!! 73114

- 118377

by: Bruce A07/28/2015

Hitch and harness were perfect fit thanks to Mark 215010

- 118377

by: Bob Morris05/31/2012

It is what the doctor order, and was here quick. 42222

- 118377

by: al P04/01/2011

The shipping was very fast and it was FREE! 10871

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by: David S08/11/2014

so easy. Had it installed in under 15 m inutes. 145821

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by: Larry G08/15/2015

Work like a charm. Was very easy to ins tall. 219475

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by: Larry H.06/20/2011

Quick shipping and fairly easy to insta ll 17442

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by: Tracy05/14/2011

works just like it was designed to do 13974

- 118377

by: JT01/12/2011

foolproof plug & play easy to install 5413

- 118377

by: Marcus08/04/2015

Easy to install, very affordable. 216636

- 118377

by: Chris B.09/12/2012

Great service and fast shipping! 54465

- 118377

by: Shannon M.10/26/2011

great price, easy to install. 26110

- 118377

by: Harold06/04/2014

Easy install took ten min 134231

- 118377

by: bill09/03/2014

good 149965


Ask the Experts about this Tow Ready Custom Fit Vehicle Wiring
Do you have a question about this Custom Fit Vehicle Wiring?

  • Adding a Trailer Brake Controller to a 2004 Chevy Express Van 3500
  • If your 2004 Chevy Express Van came with a factory installed 7-Way trailer connector then the blue output brake wire will already ran from the back to the front. It is located under the dash near the emergency brake pedal. It will connect to the broke controller blue wire. The white wire will go through the firewall and attach to the negative battery terminal. The black wire will go through the firewall, attach to a circuit breaker and then go from the circuit breaker to the positive...
    view full answer...

  • Parts Needed to Install Hitch, Brake Controller, 7 Way and 4 Way on a 2002 Chevrolet Express Van
  • First we will start off with the hitch. I recommend going with the Curt Class III Receiver Hitch, # 13040, for your 2002 Chevrolet Express Van. This hitch receiver bolts directly to the frame of the van with no welding or drilling required. For a t-connector we have the T-One Wiring Harness, # 118377, that plugs directly into your existing taillight wiring without any cutting or splicing. In order to obtain a 7 way at the back of the van, you will need to install a Universal Installation...
    view full answer...

  • Installing a 7-Way Connector in a 2000 Chevy Express Van
  • To hard wire your 2000 Chevy Express Van with a 7-Pole connection, first, you will need Tow Ready Custom Fit Vehicle Wiring, # 118377. I have included a link to the instructions below. Basically, you plug in this wiring harness into a taillight connection and run the wires where needed (to the other taillight and then to the rear of the vehicle). With that installed, you will then add Brake Controller 7 and 4 Way Installation Kit, # ETBC7, which will provide you with the 7 pole connection...
    view full answer...

  • Trailer Wiring Recommendations for a 2001 GMC Savana Van
  • You will want to go with the Tow Ready Custom Fit Vehicle Wiring # 118377 as it is designed to work on vehicles that do not have trailer wiring. The Replacement OEM Tow Package Wiring Harness # 118240 that you referenced is designed as a replacement harness for vehicles for that have a factory wiring harness. I attached an installation video for the Tow Ready Custom Fit Vehicle Wiring # 118377 that you referenced. Once installed if you need a 7-way trailer connector I would recommend...
    view full answer...

  • Recommended Wiring Harness for a 2002 GMC Savana Van
  • There is definitely something that doesn't seem right here. What I recommend is the Tow Ready wiring harness part # 118377. It will definitely bypass the issues you are currently experiencing. This will provide the 4-Way connector to the back of your 2002 GMC Savana to power your trailer lights. This harness includes the T-one connector that combines the brake and turn signal functions on your 2002 GMC Savana. I highly recommend using dielectric grease to help prevent corrosion from...
    view full answer...

  • Parts Needed to Install a 7-Way Trailer Connector and Brake Controller on a 2001 GMC Savana 2500
  • The brake controller and wiring options for a 2001 GMC Savana can be tricky. If you have a bundle of wires in the jack storage compartment, I would ask that you test them for function using a circuit tester like # 3808, and label them. If you find that you have 7 wires (left turn/brake, right turn/brake, running lights, 12 volt power, reverse lights, brake controller output, and ground) then you can use the Pollak 7- and 4-Pole Trailer Connector Socket, # HM40975 and Pigtail Wiring Harness,...
    view full answer...

  • How to Install a Brake Controller on a 2002 Chevy Express Van
  • We would be happy to explain how to install a brake controller like # 5100 or # 90885 on your 2002 Chevrolet Express Van but there isn't a pig tail that will fit your van. You will need to hardwire in the brake controller. If your van came with a factory 7-Way trailer connector the blue output brake wire already ran from the back to the front. It is located under the dash near the emergency brake pedal. But the other 3 brake controller wires will need to be hard wired in. The white...
    view full answer...

  • Can Tekonsha Prodigy P2 Brake Controller, # 90885, Mount On Lower Dash Slope On 2000 Chevy Express
  • Yes, you can mount the Tekonsha PRODIGY P2 Brake Controller, # 90885, on the slope of the lower dash. The Prodigy brake controller can be mounted from 0 degrees to 360 degrees vertically in the direction of travel. The front of the Prodigy has to be horizontal. The Tekonsha PRODIGY P2 Brake Controller, # 90885, will work for 2, 4, 6 and 8 brake systems. If you have the 7-wire Tow Package on your 2000 Chevy Express then you will use the Hopkins Adapter 4 Pole to 7 Pole and 4 Pole,...
    view full answer...

  • Trailer Wiring Harness for a 2001 GMC Savanna
  • I checked the owners manual online for a 2001 GMC Savanna Van and it does not list any tow package fuses in either the in-cab fuse panel or the one under the hood. You can double-check your owners manual to confirm. If your van did not come with a trailer connector then to add a 4-Way flat you would need # 118377. Then to add a 7-Way you would need # ETBC7. I have included some links that show and explain the ETBC7 installation for you.
    view full answer...

  • 2002 GMC Savana 2500 Wiring
  • The wiring harness needed will depend on whether or not your Savana was equipped with the factory tow package. If you have the tow package, with the connector in the jack storage compartment, you'll need the part 118240, if not, you'll need part number 118377. Links to both of these parts are included below.
    view full answer...

Do you have a question about this Custom Fit Vehicle Wiring?


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Information for this part was:

Video Edited:
Andrew K
Updated by:
Laura H

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Info for this part was:

Video Edited:
Andrew K

Updated by:
Laura H

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