Price: $26.03

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

Item # 118355

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tekonsha custom fit vehicle wiring converter 4 flat
tekonsha custom fit vehicle wiring converter 118355
tekonsha custom fit vehicle wiring trailer hitch

In Use/Installed

2003 chevrolet venture custom fit vehicle wiring tekonsha trailer hitch 4 flat t-one harness with 4-pole connector
2003 chevrolet venture custom fit vehicle wiring tekonsha converter 4 flat 118355
2003 chevrolet venture custom fit vehicle wiring tekonsha converter 4 flat in use
2003 chevrolet venture custom fit vehicle wiring tekonsha trailer hitch in use
2003 chevrolet venture custom fit vehicle wiring tekonsha trailer hitch 4 flat 118355
2003 chevrolet venture custom fit vehicle wiring tekonsha converter 118355

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tekonsha custom fit vehicle wiring trailer hitch 4 flat 118355

  • Custom Fit
  • Trailer Hitch Wiring
  • Tekonsha
  • 4 Flat
  • Converter
The best technical support and full custom fit vehicle wiring installation instructions. Lowest price Venture custom fit vehicle wiring guarantee and expert service. Chevrolet Venture, 1998 custom fit vehicle wiring by Tekonsha are available from For expert service call 800-298-8924 to order your T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector part number 118355, or order online at

1998 Chevrolet Venture - T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

Quickly and easily install a 4-way trailer connector on your Chevrolet Venture 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 Venture 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 Venture'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: 4 amps per circuit
  • 1-Year limited warranty


This custom-fit T-One connector plugs into your Chevrolet Venture's wiring harness, which is located behind the driver's-side interior trim panel in your rear cargo area. You will need to remove the storage compartment door or trim panel to access the 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 Venture'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 Venture operate.

118355 Tow Ready T-1 T-Connector - 4 Wire

118355 Installation InstructionsInstallation Details 118355 Installation instructions

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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 Tow Ready Custom Fit Vehicle Wiring 118355 Review

Today were going to be taking a look at the T1 vehicle wiring harness with the four-pole flat trailer connector. This product is going to fit a 1999 to 2005 Pontiac Montana, 97 to 2004 Oldsmobile Silhouette, 97 to 98 Pontiac Transport van, and a 97 to 2005 Chevrolet Venture. Its going to provide your four-way flat trailer connector to the back of your vehicle to power your trailer signal lights. It is compatible with five-pole, six-pole and seven-pole adapters. Adapters are sold separately. Its going to come with a dust cap for the full reflect connector.

That way you can cover up the connection points when your plug is not being used. Thats going to be tethered directly to the plug housing. That way you dont have to worry about misplacing that or losing that cover. Its going to include your taillight converter. Thats going to be the black box thats pre-wired into the system. This is included to ensure that your vehicles wiring matches that of your trailer's.

The unit is going to connect quickly and easily. You dont have to worry about cutting or splicing any wires. All you have to do is locate the connection point in the rear cargo area, and simply plug in your connector. Vehicle-specific, so its going to match up perfectly with the ports on your vehicle. These plugs are going to snap-lock together for a nice, tight, secure fit into their connection points. Once you have that plugged in, youll need to make your ground connection.

Youll notice this white wire that has a ring terminal attached to it. Thats going to be your ground wire. Youre going to have this hardware kit thats going to come with a zip tie and two self-tapping screws. You can use one of those as a grounding screw to get this grounded to a nice clean metal surface. Then you can use the other screw to mount your converter box, if you want ...

A couple of options when it comes to mounting the converter box. You want to get it in a nice, clean out-of-the-way location. On one side its going to have some double-sided adhesive tape, that way you can just peel and stick it to the mounting location. Its got the small tab in it, so if you want to add some security to it, you can go ahead and use that second screw, and you can get it secured that way. Or you could use a zip tie to tie it off to maybe a wiring harness or another location within the vehicle. A lot of options when it comes to getting that mounted. It looks like its also going to come with some replacement fasteners right there, four of them. Overall, really simple installation. You could also use the zip ties to secure any excess or slack in the wiring that you may have. Then once your install is complete, the four-way connector is going to be stowed in an out-of-the-way location within the rear cargo area. You can see weve got plenty of wiring all bundled up. That way you can easily extend it out and get it connected as-needed. Now when it comes to the maximum amperage for the stop and turn lights, were looking at 2.1 amps per circuit. For the taillights were looking at 4 amps per circuit. The unit does come with detailed installation instructions to walk you through that whole process step by step. We also recommend that you use a small amount of dielectric grease on all your electrical connections, like the plugs on the vehicle and the four-pole connector itself. That grease is going to do a great job at preventing corrosion to the connection points. If you need some of that, it is sold separately. You can find it here at and its going to be called dielectric grease. Thats going to do it for todays look at the T1 vehicle wiring harness with the four-pole flat trailer connector.

Customer Reviews

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118355

Average Customer Rating:  4.9 out of 5 stars   (62 Customer Reviews)

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

- 118355

by: Cal Buerman10/17/2014

Hello, I am a 61 year old man,and I have always had trailers since I was a young man.My family has always enjoyed camping in nearby Andirondaks and also on lake Ontario.I am very mechanical and can fix almost anything.Well I always have hard-wiredmy trailer lights myself up until now,and grumbeled about hooking a one bulb system (trailer) into atwo bulb system (car).It has always taken at least hour or two figure out how to wire in converter the proper way. With your system I removed three screws, pulled back side-panel reached in and plugged in the pig-tail conector, anduse self tapping screw to secure ground to body,and shoved convertor and extra wire behind panel,replaced the three screws,plugged in trailer and everything worked perfectly.This is by far easest set-up I have ever done, and will recomend it to all my freinds,Thanks Cal Buerman 156480


still working great,thanks

Cal B - 10/21/2015


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by: Larry K.05/11/2012

Very easy. Did plug and ground through the 12 volt accessory plug door. Pry out the black plastic panel that the 12 volt female plug is on and then unplug its wiring. Adhere to the directions, being careful where you drill the 3/32 hole for the ground wire. I did the ground wire first. I drilled the hole for the grounding screw with a Dremel like tool. It was then a snap to plug in the white plug and stick the black box to a flat spot to the right of the white plug. I then let the trailer plug slide down in back of the plastic side wall and fished it out with my fingers when it reached the floor of the back deck. The air conditioning fan housing looked like it would be annoying, but I found that it was not a problem in doing the work. I did everything through the 12 volts plug opening. There is no need to pry open any other panels. I am very happy with the product and 40165

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by: JR07/10/2014

Quick and easy to hook up, worked perfectly. The best part was the video that showed where the connector is hidden in the car. I NEVER would have found it! 140643


They are all working great, thanks. No complaints.

JR - 07/20/2015


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by: Ralph B.07/26/2012

The wiring harness I purchased was extremely easy to install and works great. The hardest part was getting the ground screw in because I did not have the right tools for my drill gun. Went across the street to hardware store and bought it. It probably took me 15 minutes to get the whole project done and lights tested. I would recommend this product to anybody who needs to wire there vehicle. On a side note I did buy dielectric grease just to make sure I got good electrical connection 49409

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by: David S.05/26/2012

Didn't realize the back AC unit would make it a little more difficult than the video but still and easy install. 41743


Cant remember. No longer have the van so I cant go out and look at it. Sorry.

-- comment by: David S - 09/03/2014


David, thanks for responding to George's question. George, I did find out that for your van you may only need one connector. Some of the vehicle options have another connector plugged in series with the taillight connector plug, and the second plug is intended to plug everything in-line. This is noted in the installation instructions that are linked on the main product page on the right hand side.

-- Rachael H - 9/5/2014

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by: Bruce B.07/03/2017

The product was plug and play; it doesn't get any easier than that. That said, I had a heck of a time finding the electrical connector on a 2000 Pontiac Montana with the rear air handler/AC unit. I finally found mine WAY behind the AC unit- I had to fish it out with a pair of extended needle nose pliers, and there wasn't enough spare wiring to get it past finger reach. You do not need to remove the air compressor/12V outlet panel. I utilized the existing ground at the site of the wiring, the provided eyelet on the ground fit without modification. TL:DR- Look BEHIND the A/C unit! 401169

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by: Don D05/28/2014

Great product,hooked up easily and fast service. 132978


works great

Don D - 05/28/2015


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by: Greg P.02/11/2012

The trailer wiring harness installed as the instructions said. Took me a little longer to install than estimated since I have the rear A/C and had not installed one on this make of vehicle before. If I put another one on, it would go very quickly. Works great. Very pleased. Shipping was very fast. Ordered on Thursday, received on Saturday. Completed the instillation that afternoon. Thanks for your products and services. Will buy from again. The video for the instillation was great. Thanks for having that on your web site. 31538

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by: BigSkyPilot08/11/2010

Easier than Advertised I was expecting a challenge after researching the installation procedure for this wiring harness for my Montana EXT AWD. Was pleasantly surprised that the factory connector was accessible through the panel by simply removing the air compressor panel. Needed a washer for the ground screw as it would not snug up tight enough to hold the terminal. Just make sure the terminal cannot be turned by hand before replacing the rear interior panel. 3342

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by: Norman R.09/24/2012

Most of my remarks are on the Hidden Hitch review. This connector was another quality product. The on-site video showed me EXACTLY what I would find and where. It was a simple "plug-and-play". Lights work perfect, was enough cable, all the parts were there. Simple. You guys at "etrailer" must actually install these products because everything was right. I can't say enough about how helpful the installation video was!!!!!!!!!!!! (2004 Chevy Venture) 55694

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by: Dave Cummins12/16/2011

The product, instructions and your service were all GREAT! Installing the wiring was a piece of cake, and only took about fifteen minutes, with most of that time used to undo a poor wiring job a previous owner of my van had done. The wiring works great, so now I can hook up my boat trailer, and go do some fishing. The next time I need anything auto related. I'll contact etrailer. Thanks again, Dave 28208

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by: Ernie Z.07/27/2012

Hidden Hitch excelent product EZ to install. Took three hours. Hardest part was cleaning outhe welded nuts on frame.Wiring Harness was actually to EZ to do. Spent some time trying to figure where male connector went. Delivery was unbelievabley fast. Didnot expect it for a couple days. Thanks loads for all the backup help to the girls to get my account in order and quick delivery. 49614

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by: Steve K.07/11/2013

I ordered this for my montana after trying to wire up a 4 pin plug just to realize that I need a different setup. I order this and followed the instructions that came with it. I had this installed in less then 30 minutes and it worked perfectly. Everything worked. I will definitely look here for more things first next time. 88901

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by: Sierra H and Bill03/20/2017

Best customer service have had in a long long time ,great product , fast delivery, easy to install , had a little trouble with wiring but after talking to Bill found it was nec to remove part of rear a/c housing to find connector plug, after that everything was a breeze. Thanks for great service. CLP 359222

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by: G04/20/2017

Nice to plug and play to connect wiring. Unfortunately no good opening inside panel to run wire to back. Did not want to drill a hole inside, so wiring is on top of back door weatherstripping. Might need 2 trim tabs with 1" heads on them if you remove the sill on the back door to open the side panel. 370229

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by: John G.06/19/2012

Overall, very happy with this product. The screw tab on the black box could stick out further from the body of the box, but I was able to make it work. Everything else worked as the instructions said, and the tail-lights and turn signals on the trailer lit up. 44745

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by: Andy06/15/2015

I have had to chase tail/brake light wiring to hook up a trailer more times than I'd care to remember. This 'plug and go' harness was installed in 5 mins and worked like a charm. I just watched their video and was up and ready in no time. 203464

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by: Scott G.04/26/2013

Awesome... Found the video, watched it 2 or 3 time and said I can do this, ordered the product and installed it in no time with no problems. Trailer lights work great. Great product, fast shipping and the best service ever. 78049

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by: Dave D06/28/2011

Good product, One note on a 2000 olds silhouette with the air compressor you have to cut the plugs off and attach it to the factory harness you should have with your van, at least according to the olds dealer. 18057

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by: Ross T.06/10/2012

The installation video for this hitch was right on the money. The product arrived promptly and I had no trouble installing it. Truth in advertising - it worked as promised with no surprises! 43573

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by: donnie g03/04/2014

very nice , it fit perfect and worked the same,very happy with it. shipping was very fast and sales lady i talked to on the phone was very nice and helpfull thanks a happy customer !!! 118480

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by: Aaron. W06/05/2016

From the instructions to the final product was easy to install and use. I was not sure of what I was doing, but after getting started everything went just as planned. 257370

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by: Deane J08/07/2013

ordering the product online was easy and fast, delivery was within 2 days and installation was simple and easy. The youtube video made the installation very easy. 93746

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by: Chad J.05/13/2015

The part was exactly as advertised. Ordered it at 3pm it was shipped 9pm that evening and I had it 2 days later. Would order from them again. 192818

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by: Scott07/28/2015

I logged on, watched the help video, ordered the product, installed it in 10 minutes, and it worked perfect the first time. Life is good! 214896

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by: Ted B.09/09/2013

I originally purchased the universal crimp on type but I'm glad I exchanged that for this one. Just plug in and you're done! 99072

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by: gregory w.01/15/2012

The product was exactly what I paid for. It was very easy to install and came with complete information on how to install it. 29734

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by: Karen D.12/04/2012

The order process went smoothly and we were able to complete our installation and our job quickly and at a reasonable cost. 60593

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by: dan mcmanus07/25/2016

worked like champ.. good packaging.. prompt installation .on target.. will use again if need arises.. 275958

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by: Nick F.04/25/2012

Installation was very quick and easy; much easier than previous installations I have done requiring splicing of wires. 38316

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by: Mark J03/14/2015

This worked great. I would tell everyone to get this it installed easy and with very little time Great product !! 178274

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by: Trang01/30/2013

it is work really good,instruction very easy to to follow.thanks etrailer if i can do it anybody can too 64612

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by: Kevin G.07/30/2014

Worked like a charm, simple install, and cheaper than bricks and mortar stores (if you could find one). 143634

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by: dwight05/12/2015

Very impressed with speedy delivery,although the package had been previously opened,seemed to work ok 192318

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by: Enrique M08/14/2013

The wiring harness is easy to instal and a high quality product. Also you can not beat the price. 94931

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by: Danial D.09/08/2017

My trailer plug setup came to me quick it was very easy to hook up I would recommend it to anyone. 430265

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by: EDWARD JONES08/27/2012

only took about 20 minutes to install great direction good quality fast deliverey thrilled to death 53238

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by: George P.03/17/2015

The wire harness went on just as described. It took less than 15 minutes and no problems. 179293

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by: william K03/20/2014

Needed vehicle wiring for my 1999 Chevy Venture, etrailer had what I needed, hey thanks. 121513

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by: Tom E05/16/2011

The product worked great, and the delivery was very fast! Thanks for the fine service. 14365

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by: Kenny S05/30/2017

Perfect fit, not a single problem. The video was extremely helpful. Thanks, etrailer 386647

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by: Larry Piper06/07/2011

The installation video was great and the harness went right in easy. Thank You 16379

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by: WAREN C.04/23/2013


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by: Ross B.09/24/2015

The wiring kit worked great. It had everything that I need to install it. 227452

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by: trailer wiring plug04/24/2012

product arrived as described...on time ...and installation was a snap 38160

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by: Jeff08/23/2011

Wiring was easy to install. Very good quality and fit just right. 22582

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by: thomas s05/27/2011

The kit was the quickest way to wire a vehicle ever. perfect fit 15579

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by: Joe B05/27/2014

very good quality .. the installation video is the best 132794

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by: Dan J05/30/2012

Very simple to install. My 12 year old could do it. 42010

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by: Bernie B.05/10/2011

Product is of good quality. install is very easy. 13254

Show More Reviews

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

  • T-1 Vehicle Wiring Harness Part # 118355 for a 1999 Chevy Venture
  • I am assuming you are needing a T-1 connector, part # 118355. The connection point is behind the trim panel on the drivers side, just behind the taillights. I will provide a link below to the installation instructions, which will explain the whole installation procedure. We also have an installation video showing the install on a 2002 Venture. The procedure would be identical to that of your 1999 model.
    view full answer...

  • Brake Controller Wiring and Installation Kit For a 2000 Chevrolet Venture
  • We have an online information page, see link that contains a wiring diagram that shows how all the trailer wiring connections are made. Along with a four way wiring harness, item # 118391 for the Equinox and # 118355 for the Venture, you will also need the # ETBC7 brake controller installation kit. There is an online video that shows the installation kit being installed on a 2003 Chevrolet Express Van which will be similar to the installation on your vehicles. The blue wire is the...
    view full answer...

  • Installation of a Brake Controller on a 2009 Pontiac Montana Van
  • On a 2009 Pontiac Montana Van the problem is that the installation of a brake controller can shut down the brake light system in the van. The red brake wire that is on the back of the brake controller is normally connected to the cold side of the brake light switch to activate the trailer brakes when the brake pedal is applied. If that red wire from the brake controller is connected to the cold side of the brake light switch on the Montana Van it will shut down the whole brake light system. I...
    view full answer...

  • Setting Up a 2004 Chevrolet Venture to Tow a 2,500 Pound Camper with Trailer Brakes
  • Suspension supplements like the Timbren kits we carry may or may not be needed. At 2,500 pounds dry you should be within the tow capacity of the Venture. If your total trailer weight is close to the limit of the van, then I would suggest a suspension supplement. Since you will be towing a camper that will have pretty much the same load each time, I would suggest the Timbren Suspension Enhancement System as it will not need to be adjusted for varying loads. You would use part # TGMRREN if...
    view full answer...

  • Difference Between Hopkins # HM41365 and Tow Ready # 118355 Wiring Harness for 2003 Olds Slihouette
  • Both the Hopkins # HM41365 and the Tow Ready # 118355 would be correct for your Silhouette. Both wiring harnesses have the same capacity, preform the same function and would install in the same manner. Either harness would work well for you. The price differential reflects our cost on each item, and does not mean that one harness is better or includes different features than the other. To see install details for each item and an install video , click on the provided links. The...
    view full answer...

  • Installing Tow Ready Trailer Wiring Harness # 118355 on 2001 Oldsmobile Silhouette w/ OEM Compressor
  • The Tow Ready taillight converter, part # 118355 is designed to intercept the signals going to the taillight assemblies by plugging inline with the connection shown at the :35 second mark in the video I've linked you to. I spoke with my contact at Tow Ready, who tells me that on vehicles that were equipped with the compressor, the connectors you're looking for could be closer to the door jamb or in front of the compressor, closer toward the front of the vehicle. You might need to pull...
    view full answer...

  • Cant Find T-One Connector Plug on my 2003 Chevrolet Venture to Install Trailer Wiring 118355
  • Since the part # 118355 can fit a few different vehicles with differing setups you will need to check a few places to find the connector you need. First thing I would recommend is checking out the install video I attached to the right that shows this harness being installed on a 2003 Chevy Venture just like yours. Also, some vehicles will only have one connector. Some of the vehicle options have another connector plugged in series with the taillight connector plug, and the second plug...
    view full answer...

  • Trailer Lights Not Working on a Camper Towed by a 2002 Oldsmobile Silhouette
  • A fuse blowing indicates to me that there is a short. If it happens when you connect the trailer to test the lights then that would indicate a problem on the trailer side. Lets first look at the wiring harness on the van. Make sure the ground wire is attached to a clean metal surface. Moving the ground might help. When you plug in the 4-Way to the adapter, # 30717, make sure the connection is good and tight. You must have the ground wire from the adapter also attached to the vehicle...
    view full answer...

  • 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 T-1 Connector, part # 118355 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 # 118335 to...
    view full answer...

  • Availability of Hitch For a 2003 Chevy Venture Van
  • The hitch you purchased, 87590 from Hidden Hitch will fit 1997-2001 Chevy Venture, Pontiac Transport and Oldsmobile Silhouette. It is a discontinued hitch and it will not fit your 2003 Chevy Venture. The correct hitch for your 2003 Chevrolet Venture is the Hidden Hitch Class III 2 Inch Hitch, part # 87410. I am including a link to the installation instructions on the # 87410 hitch. Some other items you may need to complete your towing setup are listed below. Draw-Tite Ball Mount,...
    view full answer...

  • Accessing the Plug for a T-One Connector on a 2000 Chevy Venture
  • I am sorry to hear that you are having trouble with your T-connector, item # 118355. Most customers assume that the plug is directly behind the drivers side panel in the rear. But the plug is usually behind the air conditioning unit that is directly behind the panel the air conditioning unit will have to be pulled away to access the plug. I hope this helps. Let me know if you need more info.
    view full answer...

  • Location of Factory Connection Point for Trailer Wiring Harness on a 2003 Chevy Venture
  • The plug will be there on a 2003. It is just that we have not had a 2003 Venture in to make a video but we have had a 2002 and 2004. To find the factory harness you will need to pull up the threshold panel in the cargo area so you can pull back the panel on the driver side. The wiring harness should be nearer the end of the vehicle. It can be either a single connector with nothing plugged into it or two connectors connected together. It can also be located behind an air conditioning...
    view full answer...

  • Trailer Hitch, Wiring, and Accessory Recommendations for a 2003 Pontiac Montana
  • The Curt trailer hitch # 13344, is a fit for a 2003 Pontiac Montana. The hitch fits all models of the 2003 Montanas. In terms of the different hitches available, see link, they will all look similar once installed. The receiver will be visible but most of the crosstube will be hidden behind the rear fascia. There are both 2 inch and 1-1/4 inch hitches available for this vehicle. The Curt hitch is a Class III with a 2 inch receiver. The 2 inch hitches are more versatile than the 1-1/4...
    view full answer...

  • Troubleshooting Trailer Wiring On 2004 Pontiac Montana
  • The first thing I would recommend is to try connecting the trailer to another vehicle to see if the same problem exists. If not then the problem is going to be found on the Montana. If the wiring harness is hard-wired you will want to check the ground to make sure it is corrosion free and attached to a clean bare metal surface. Check the connector to make sure there are no signs of corrosion or damage to any of the pins and correct as needed. Since the trailer harnesses we offer...
    view full answer...

  • Replacement Installation Hardware and Trailer Wiring for the 2005 Chevrolet Venture Hitch # 87410
  • A replacement hardware kit can be ordered using the item # RHK and then inputting the hitch item # 87410 and the hitch manufacturer Hidden Hitch in the boxes on the # RHK item page. You might want to call in and order so you can verify that the fishwires you need will be included since they are not listed in the parts list in the instructions, see link. The number to call is 1-800-298-8924. I have included a typical installation instructions link for you to review and an installation...
    view full answer...

  • Installed Tow Ready Wiring Harness, # 118355, And The Left Brake Light Is Constantly On
  • Sounds like the wiring on your trailer might not be connected properly. You can use a circuit tester like the, # 3808, and test the wire connections on your trailer. The brown wire is for trailers taillights and should be connected to the vehicles taillight. The white wire is the ground and you will want to check and make sure that it has a good, clean ground connection or if your trailer lights are grounded by the mounting studs that it is grounded properly. The yellow wire is for the...
    view full answer...

  • Wiring Harness Fit for 2003 Oldsmobile Silhouette
  • I have a wiring harness for you, however the Draw-Tite # 24721 does not have a wiring harness included. I would use this Custom Fit Wiring Harness from Tow Ready # 118355. This harness will plug into your vehicle's existing wiring and comes with a 4-way flat connector. I have attached an installation video of this wiring harness on a 2003 Chevrolet Venture for you, it will be similar to your Silhouette.
    view full answer...

  • Where is the Trailer Wiring Connection Location on a 2000 Chevy Venture
  • On a 2000 Chevy Venture you will need to pull up the threshold panel in the cargo area so you can pull back the panel on the driver side. The wiring harness should be nearer the end of the vehicle. It can be either a single connector with nothing plugged into it or two connectors connected together. In either case it could be hiding behind another wire bundle or even taped up with another bundle so you cannot see it. I have included links to a couple of videos showing typical installations...
    view full answer...

  • Tow Ready Trailer Wiring Recommendation for a 2003 Chevy Venture
  • For your 2003 Chevy Venture it is recommended that you use a Tow Ready Custom Fit Vehicle Wiring # 118355. This unit will not require any wire cutting or splicing to install on your vehicle. It will be a simple plug and play installation. I attached installation instructions and an installation video of this product for you to check out also. The Tow Ready Wiring Harness # 119178 that you referenced could be used on your vehicle but it would require you hard-wiring the unit into the...
    view full answer...

  • Does Trailer Wiring for 2004 Pontiac Montana Carry Turn Signals and Stop Lights
  • The trailer wiring harness part # 118355 which is a confirmed fit for your 2004 Pontiac Montana will provide your trailer wiring with signal needed to activate the turn signals, brake lights, and running lights. I attached an install video for you to check out as well.
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  • Will T-One Trailer Wiring Harness, # 118355, Work with a 2001 Pontiac Montana with Air Compressor
  • According to Tow Ready, on some vehicles with air compressors, the plugs will not be accessible through the storage compartment. You would need to pull back the interior trim panels to access the connectors. So the T-One Vehicle Wiring Harness with 4 Pole Trailer Connector, # 118355, is the correct harness for your 2001 Pontiac Montana. I have included a link to the installation instructions below. I do not recommend splicing the brake light wire into the turn signal wire as it would...
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  • 2000 Pontiac Montana With Insufficient Voltage for Turn Signal/Brake Lights at Trailer Connector
  • It sounds like you have the ground taken care of. Are you using a tail light converter? Part # 118355 is the converter offered for your vehicle. The factory does provide the port for the towing wiring, but a converter is still needed. If you have a converter installed already, I would recommend testing the wires on the input side of the converter. You should have 12-volts entering and exiting the converter while each function is activated.
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  • Trailer Right Turn Signal Not Working When Connected To 2004 Chevy Venture
  • Since the trailer lights are working when connected to the 2008 Dodge Grand Caravan, it sounds as though the converter that is in your 2004 Chevy Venture trailer wiring harness might be damaged. You will need to use a circuit tester like the Quickee Circuit Tester, # 3808, and check the wire for the right turn signal that is going into the converter box. If it has power going into the box, then you will need to check the wire for the right turn signal coming out of the converter box. If...
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  • Trailer Wiring Harness Recommendation for a 2004 Pontiac Montana
  • Actually, all you will need to do is install a wiring harness, # 118355, on your 2004 Pontiac Montana. But if you wanted to use those factory wires, because you have separate wires for turn signals and brake lights, you would first need to install a converter. The converter, # RM-732, takes the separate signals and combines them which is what a trailer uses. To wire it up your yellow wire will go to the yellow wire on the converter, green will go to green, white will go to white, and...
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  • Trailer Running Lights Not Working and Other Lights are Dim on Trailer Towed by 2001 Pontiac Montana
  • Since the trailer lights work fine on a different vehicle, I would start looking at the trailer connector on the 2001 Pontiac Montana. If there is any corrosion build up inside the connector then that can cause a poor connection and cause the issue you are describing. If the vehicle side connector is cleaned out, you can go on to testing the converter itself. Start by testing the wiring going into the converter from the vehicle using a circuit tester like # 3808 if needed. If the wiring...
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  • 4 Pole Trailer Connector on a 2004 Chevy Venture
  • I'm sorry you found the instructions with your wiring harness lacking. The 4-pole trailer connector is meant to be stowed in the rear cargo area when not in use. When you need to tow, run the 4 way out the door, and close the hatch on it. The weatherstripping provides enough cushion to prevent damage to the wires. Just be sure to keep the wire away from the latch, which WILL damage the wire. This arrangement protects the trailer connector from moisture, corrosion and damage. I use...
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  • T-One Vehicle Wiring Harness on 1998 Oldsmobile Silhouette Shorting Out
  • To run down a short in a wire you will need to use a circuit tester, item # 3808 if you need one, to test the wiring and find the short. The place I would start is on the vehicle side of the converter. Check each wire there, with a helper to turn on turn signals and step on the brakes, and be sure that each circuit is functioning properly. While you are behind the taillights make sure the ground wire is attached to a good grounding point. Next I would test the wiring coming out of the...
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  • Troubleshooting Tow Ready T-One Vehicle Wiring Harness, # 118355, on 1998 Pontiac Trans Sport Van
  • The 1998 Pontiac Transport has a 3-wire system with a converter, so there is no splicing needed. The Tow Ready T-One Vehicle Wiring Harness with 4 Pole Trailer Connector, # 118355, that you have is the correct harness. You will need to use a circuit tester like the Quickee Circuit Tester, # 3808, and test each wire going into the converter as its function is activated. With somebody to turn on the turn signals and step on the brakes, test each wire to see that it is working properly....
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  • Can 4-Way Trailer Connector Be Routed through 2001 Oldsmobile Silhouette Cargo Area Outside the Van
  • When installing the Tow Ready wiring harness, # 118355, on a 2001 Oldsmobile Silhouette, the 4-Way is meant to be stowed inside the rear cargo area and pulled out when in use. The hatch door can be closed on the wiring and the weather stripping will protect it. Take a look at the video I have linked as an example. If you wanted to route it through the bottom of the van interior and to the bottom, you may be able to find a grommet at the very bottom of the cargo area through which you...
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Info for this part was:

Test Fit:
Joe V
Photos by:
Theodore B
Expert Research:
Michael L
Video Edited:
Zack K
Video by:
Andrew K
Expert Research:
Robert G
Expert Research:
Michael H
Expert Research:
Jeff D
Expert Research:
Jameson C
Video Edited:
Mike H
Updated by:
Laura H
Installed by:
Cole B
Updated by:
Sarah W

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