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4-Pole 60" Long Vehicle End (Includes 4 wire taps)

4-Pole 60" Long Vehicle End (Includes 4 wire taps)

Item # 18002
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Tekonsha Trailer Wiring - 18002
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Tekonsha Trailer Wiring - 18002

  • Trailer Connectors
  • Vehicle End Connector
  • 4 Flat
  • Plug and Lead
  • 0 - 5 Feet Long
  • Tekonsha

Tow Ready 4 Way Flat Trailer Connector, Vehicle End by Draw-Tite, Hidden Hitch and Reese

  • 18 Gauge Bonded Wires
  • Taillight, Stop and Turn functions printed on wires
  • Ground Wire Runs Full Length Of Assembly
  • 60" Long

118002 4-Pole 60" Long Vehicle End (Includes 4 wire taps)

This Product Fits The Following Vehicles

California residents: click here

Video of 4-Pole 60" Long Vehicle End (Includes 4 wire taps)

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Trailer Wiring Harness Installation - 2007 Lexus RX 350

Today on this 2007 Lexus RX350 we are going to be installing the 4-pole harness part number 18002. The Lexus that we are going to show you today has a unique situation to it. On our website we indicate the wiring for the Lexus is going to be the modulite part number 119176. This particular Lexus does have a factory installed tow package that we are going to be able to tap into so we are going to show you how to locate that. The port is located in the rear cargo area of the vehicle underneath the flooring over on the driver side. We are going to need to remove most of this interior section. There is a particular order of operations that we need to abide by to get all of the components out. 00:38

We are going to start by removing the forward most cargo door. We need to pull back the facing at the front section first. There are push rivets that are holding that in place so just pull it up. We need to unscrew the hinges that are holding the flooring into place. There is one screw per side for these hinges. We next remove the forward most cargo storage area. There are two push rivets holding this into position. One on the driver side and one on the passenger side. We are going to be using a rivet removal tool. We need to slide it underneath and just pry it up. 01:11

Next we are going to remove the front storage compartment. To access it we need to release the two coverings and there are buttons at the rear threshold to do that. Again, we have got two push rivets holding it in place. One on the driver side and one on the passenger side. Next we will remove the driver side floor covering and there are actually four bolts holding it into position, two here at the rear side and two at the forward side. Next we will remove the rear threshold piece. There are two push pins that are holding this into position. One on the driver and one on the passenger side. When removing the threshold piece you need to watch the releases for the cargo buttons. Make sure you clear the releases for the cargo doors. When you get the threshold piece to release you need to press these in. Finally we want to remove the driver side storage compartment. We have got two fasteners holding it in position. One push pin here and one here at the inside of the cargo area. 02:22

With all of those components removed, if we look at the main wiring harness feeding the tail light assembly on the driver side, there is a port located right here and that is our tow package port that we are going to be tapping into. Unfortunately this time the manufacturers do not offer an after market plug-in for this port. So what we are going to do is cut this end off and we are going to wire our wiring harness directly into it. Before cutting the end off I am going to remove the fuses activating our tow package so that we do not shorten anything when we cut the wires. You can locate this fuse underneath the hood in our accessory fuse box. If you remove the lid and look at the top side, it is labeled towing 30 amp fuse. We will put that back in when we are finished wiring in our 4-pole. Then back at the port we will cut the wires. The 4-pole harness comes with quick splices to make our connections with. However I am going to use some standard butt connectors. We tested previously to find out which wires carry which function. The green is our right turn, right brake signal. Yellow is our left turn, left brake signal. The blue wire is our running light lead and the white is the ground. It is pretty similar to the wires that we have got on our 4-pole harness. The white is our ground, the yellow is our left turn, left brake. Green right turn, right brake, and the brown is our running light lead. 03:52

We want to strip back some of the jacketing on each one of the wires. With our wiring stripped back we just want to apply the butt connector. We will the wire into one end and then we will crimp that down. Take the adjoining wire and slide it in and crimp it down as well. Then we just want to tape up those connections. Then for storage of the 4-pole we have two options. We recommend that you leave it inside the vehicle. Store it in the storage compartment over here and then just pull it out the rear cargo door whenever you want to use it. However if you do need it underneath the vehicle permanently there is a grommet there right below the connector. You can just put a splice in that, route the 4-pole through there and then you can leave it underneath the vehicle permanently. From there we just want to put our fuse back into position and reinstall our flooring and then our installation will be complete. With the interior reinstalled we will show you how you can store your 4-pole. When you want to use it again just pull it out the rear door and you can close the door on it. You do not have to worry about it being pinched. The weather stripping at the rear will prevent that from happening. You can see I can still move it side to side freely. With that, that will conclude the installation of 4-pole part number 18002 on a 2007 Lexus RX350.

Customer Reviews

4-Pole 60" Long Vehicle End (Includes 4 wire taps) - 18002

Average Customer Rating:  4.9 out of 5 stars   (39 Customer Reviews)


Took about 15 to 20 mins total to remove all the covers,Matt’s etc
Wiring it in is so easy, only 4 wires,
Use blue butt splice connectors instead of the ones it comes with.
You can buy a small pack of ten for about 3 bucks, by doing this you will never have to worry about a loose connection.
The video tells you what color goes where.
I like to put a small price of electrical tape over every connector I do.
Looks more professional and the wires can never come apart.

It was an easy hook up:.still working good. No issues, I use it once a week or more.
Jim - 06/08/2021

2009 Lexus RX 350

I gave ETRAILER and the trailer hitch five stars. The product is of very high quality and the customer service received was awesome. Installed the heavy duty hitch in less than thirty minutes. It was a custom fit for my 2009 Lexus 350RX. The wiring harness for less than $10 was a perfect match since my Lexus was equipped with a towing package. Shipping was SUPER FAST AND FREE!!!

2019 Ram 3500

Good purchase. Easy install. Placed on a 22 voltage 4225. Our frame was d wider then this product, but it worked. We also welded for hood measure. Paid 800 to pay someone to dab in past, this was better.


Got the wiring harness to make an extension to pull our trailer behind our camper with bikes and kayaks in. This worked great! I love etrailer!


I ordered a more expensive harness initially. I then found that my Lexus was prewired for a harness and needed only this one. Only bummer was I had to pay $11 to ship the other one back and this one did not qualify for free shipping. So my mistake cost me an extra $15.

Lexus RX 350

The product is top notch. The how to videos make installation very easy. I had the hitch installed in a half hour, by myself. The wiring was easy because my rx350 Lexus already had a towing port at the rear of vehicle.


Hitch and install were simple and easy, as well as the wiring harnesses to the trailer.

Hitch is all good, wish the wiring harnesses connection was a bit better built.
Randell - 04/19/2020

2012 Lexus RX 350

Purchased this plus 18144 mounting bracket for new installation on my 2007 Lexus RX350. Lexus SUV was advertised as having "towing prep package", a $160 option, installed but it wasn't clear if that package included the proper wiring connection under the floor for this product. After digging down (per your excellent video for this vehicle), I found everything as hoped for. Installation was less than 45 minutes including cargo area disassembly and reassembly. Mounted the mounting bracket on plastic surface under the bumper - drilling was easy and mounting appears to be secure. Finished off installation with 30512 flat cover LED tester. All in all a very clean installation. BTW, used 12 inch plastic ties to dress wires under the car so that nothing droops done. My wife is pleased - which goes a long way to confirming the aesthetics of the installation. Thanks for the great videos and products.

2007 Lexus RX 350

Trailer wire received was as expected however there is one part that could be better. The 4 box type 3M wire connectors that come with it are not the right connectors for this application. When connecting the 4 wires the box connectors are all on top of each other and create a large "bunch". The etrailer "how to video" shows the use of butt connectors which is a much better application. The "how to" instructor acknowledges the 3M connectors that come with the wires but simply says he is going to use butt connectors. So, why not include butt connectors in the simple wire kit? Otherwise all is well and trailer lights work fine, thanks etrailer for your good service.


the harness was exactly the way it was pictured. the instructional video on the website helped tremendously with installation. no problems at all.

One year later and the harness has given me no problems at all. I highly recommend ETrailer for towing accessories.
Mike K - 01/09/2015

2007 Lexus RX 350

Perfect Video directions. My friends were amazed watching the video before I installed the wiring in my 2007 Lexus RX 350 AWD.
Great Company. I will always order all my hitches and wiring accessories from etrailer.

2009 Lexus RX 350

Great Product, Fast Shipping, Quick 20min Install on my '09 Lexus RX350!

2009 Lexus RX 350

Works great on my 2009 Lexus RX 350 that was pre-wired at the factory. The part was easy to order online and the customer service representatives were friendly.


This trailer wiring matched up exact with the auto wiring. I was able to install in very short time.

HOWARD E - 06/13/2020

2000 GMC Jimmy

This was a quick and simple install on my 2000 GMC Jimmy. Purchase the Mounting Bracket 4-Pole Flat with this and you have a very professional looking installation without having wires hanging under your vehicle.

2009 Lexus RX 350

Just finished installing hitch and wiring on my Lexus rx350. Everything went in perfectly and the video was a great help on the trailer wiring. Even showed how to disassemble interior panels to reach loom


Used this part in assembling my trailer wiring with brake controller. Everything works well!

2007 Lexus RX 350

Worked as advertised and extremely easy to install. Less than 25 minutes from start to finish. Very satisfied with the quick shipment from ETrailer.


Installed it this weekend. Easy as eating pie. You-tube video made it brainless. Product was fine. Connectors seemed solid. Length of cable is sufficient, but could be longer.

2004 Saturn Vue

It is very good product. Instructions on the internet was very usefull.

2009 Lexus RX 350

works perfect.


Works well


Worked great. The length was perfect, but none to spare.

Everything works fine.
Joe G - 04/29/2016


Very quick delivery! I was also kept well-informed during the shipping and delivery process. The product is great and the videos were a great help. Great service. Thank you!

2008 Lexus RX 350

Super easy to install, followed the directions and easily installed in my 2008 RX350.

Show More Reviews

Ask the Experts about this Tekonsha Trailer Wiring

  • Brake Light Fuse Keeps Blowing After Installing a Trailer Wiring Harness
    What you are describing is a classic short circuit. Two wires touching or a wiring touching bare metal, a wire attached to the wrong location, and even corrosion can cause over draw on the circuit and blow that fuse. If it were to happen only when connected to a trailer then the short would be on the trailer side. You would have to check the trailer connectors to make sure they are clean and free of corrosion, check the wiring for any pinched, frayed, or otherwise damaged wires, and make...
    view full answer...
  • Troubleshooting Open Running Lights Circuit
    Sounds like the problem lies either with the trailer connector on the trailer, or in the trailer wiring itself. A loose connection or insufficient ground connection is the most likely culprit. First, check the connector on the trailer, look for any corrosion or damage that would prevent the signal from the running light circuit from getting through to the trailer. Then, make sure the white ground wire from the trailer connector is securely connected to a clean, non corroded spot on the...
    view full answer...
  • Which Pin of a Trailer 7-Way is the Ground Circuit
    Most likely your trailer has a 7-way and the reason you referred to it as a 6-way is because you didn't count the center plug. But either way I can help if you have either a 6 or 7-way. Since not all trailer connectors will use what is considered the standard wiring setup you would need to check out both of the connector diagrams I attached to determine which wire would be the ground circuit on the connector of your trailer.
    view full answer...
    Image 1 for Image 2 for
  • Only One Trailer Brake Light Does Not Work, All Other Trailer Lights Work
    Usually when all other lighting functions work except for one it indicates a bad ground. Ground problems normally show up when there is more draw on a system such as the constant draw of the brake lights. Make sure that the vehicle side and trailer side connectors are clean and free of corrosion inside and out. The main connector grounds should be attached to clean and corrosion free bare metal surfaces. The light grounds should also be attached to clean and corrosion free bare metal...
    view full answer...
  • Running Lights on 2 Trailers Not Working with a 2005 Dodge Ram 1500
    When you checked the fuse on the truck did you check the truck's running light fuse or the tow package running light fuse? They are independent of each other on most vehicles. There also could be relays associated with the tow package wiring that you can check. A good start was to clean the trailer connector but if there is no power on the running light circuit then the issue is further forward somewhere on the truck. And if it is not a fuse or relay then it is likely a damaged wire somewhere...
    view full answer...
  • Troubleshooting Trailer Light Flashers with 2012 Hyundai Tucson
    It sounds like you might have a ground issue. A ground issue usually appears when there is a bigger draw is placed on the wiring. This could explain why the flashers work when the vehicle is off, but will not work when the vehicle is on. Check the white ground wire to make sure that the contact is secure and undamaged, free of dirt, and doesn't show signs of corrosion. Even if there aren't these visible signs, your ground may be in a bad location. Try moving the ground to a better location...
    view full answer...
  • Where to Wire two Brown Wires on Trailer Wiring to 4-Way
    The brown/green and brown/yellow wires on your trailer are for the same running light circuit. You would need to run them both to the brown wire of the 4-way.
    view full answer...
  • Trailer Brake and Turn Signals Not Working when 2012 GMC Sierra Running Lights are On
    This sounds like a ground or a short. Ground problems normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or brake light but can show up any time. Make sure that the vehicle side and trailer side connectors are clean and free of corrosion inside and out. The main connector grounds should be attached to clean and corrosion free bare metal surfaces. The light grounds should also be attached to...
    view full answer...
  • Troubleshooting Trailer Lighting Brake Lights Not Functioning on 2008 Chevy Trailblazer
    Check the third brake light fuse of your 2008 Chevy Trailblazer. It sounds like that circuit is blown and because of that is not allowing your trailer brake lights to illuminate. This is a common problem for Chevy vehicles like yours.
    view full answer...
  • Trailer Lights Not Working When Connected to a 20014 Ford F-150
    On a vehicle side trailer connector the brake lights and turn signals are on the same circuits (one each for the left and the right) because that is what the trailer uses. So it is not unusual that the tester you are using showed power on the turn signal indicators when the brake pedal was pressed on your 2004 Ford F-150. They should also come on when the turn signals are used. Assuming that all the functions work on the truck side, the problem must be on the trailer side. It could be...
    view full answer...
  • Troubleshooting Running Lights Not Working On Trailer When Hooked To 2012 Chevrolet Silverado
    Since you said the problem exists for two different trailers, the problem will be found in the truck wiring. You said you checked all of the fuses and they are okay and then you said you used a circuit tester and found the running light circuit is not working. There should be a large fuse box on the driver side under the hood and on the fuse legend the fuse you can check out is titled 'Trailer Park'. This is a 15 amp fuse and can be the source of the problem. If you find the fuse is blown,...
    view full answer...
  • Troubleshooting Trailer Turn Signals that Both Blink When One is Applied
    Sounds like the left and right stop/turn circuits are shorting out to each other somewhere. Typically this is a corrosion issue or cut or exposed wire. You will want to start at the connector looking for corrosion or bent pins and work your way to the wiring looking for cut or exposed wire making your way back to the light assemblies. I attached a help article on troubleshooting trailer wiring for you to check out as well.
    view full answer...
  • Trailer Left and Right Side Tail Lights Work Intermittently
    This sounds like a ground issue. Ground problems normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or brake light. Make sure that the vehicle side and trailer side connectors are clean and free of corrosion inside and out. The main connector grounds should be attached to clean and corrosion free bare metal surfaces. The light grounds should also be attached to clean and corrosion free bare...
    view full answer...
  • No Brake Light Signal on 2000 Chevy Silverado Trailer Connector
    If the 4 pole on the truck is factory installed, and you aren't getting any signal on the trailer connector when the brake pedal is pressed a blown fuse is the most likely culprit. Check the under-hood fuse box for a blown fuse. The lid of the fuse box should have a diagram on it that shows which fuse protects which circuit. If there is a blown fuse, it could have been caused by a short in the wiring of the trailer. Once the fuse is located and replaced, be sure to closely examine the...
    view full answer...
  • Installing Trailer Wiring Harness on 2009 Lexus RX350 with Factory Tow Package
    If you are using harness # 18002 then you would ground the white wire to a clean, bare metal surface. The white is the ground for the harness. The wires that you are tapping into on the vehicle will use that ground and it should still work. It is possible that the ground on the factory harness is tucked up further towards the front of the vehicle for some reason so you will want to cut back the covering/loom to see if there are more wires. The ground may not be white on the vehicle harness....
    view full answer...
  • Troubleshooting No Trailer Running Lights and No Power at 7-way on Rear of 2008 Chevrolet Silverado
    It sounds to me like the fuse for your trailer's running lights has blown. The 11:00 pin when looking into your 7-way is for the trailer's running lights. The 1:00 position is for 12 volt power. I found an online copy of an owner's manual for a 2008 Chevrolet Silverado and it shows the correct fuse in location 25. You might verify with your manual but I'd start there. If you find a blown fuse the next step is to determine why it blew. Make sure the 7-way on both your truck and trailer...
    view full answer...
  • Possible Ways Brown Wire of Trailer Wiring is Ran
    I found the answer page you are referring to where I said: The brown/green and brown/yellow wires on your trailer are for the same running light circuit. You would need to run them both to the brown wire of the 4-way. This particular trailer wiring setup had the brown wire (running light circuit) split off in to two wires for both sides of the trailer and they were marked yellow/brown for the left side and green/brown for the right side. Sounds like your trailer is wired more traditionally...
    view full answer...
    Image 1 for
  • Trailer Turn Signals Not Working When Connected to 2001 Ford F-350 7-Way Trailer Connector
    There could potentially be a couple of issues going on at the same time. The first thing you are going to want to do is make sure all the functions works on the truck side with no trailers connected. Use your tester to test the connector while someone sits in the truck and runs through the lighting functions. If the truck side turn signals are not working then you will want to check the vehicle owners manual for the locations of the fuses and relays related to the tow package wiring. One...
    view full answer...
  • Troubleshooting the Installation of a Tow Ready Wiring Harness # 18002 on a Camper
    It sounds like the white wire is not being grounded. You will need to run that to a clean metal surface and then the 4-way should function correctly. I attached an installation video for this product for you to check out that shows how this product installs onto a vehicle for you to check out also.
    view full answer...
  • Turn Signals on Boat Trailer Work, But Brake Lights Do Not
    When you state that you never had to use a converter before, do you mean with this particular vehicle? That the brake lights worked with this trailer being towed by this vehicle before, but are not working now? Or do you have a new car, and you have hooked up the trailer connector and are finding that the lights on your boat trailer are not working correctly? Most trailers use what we call a combined lighting system. This means that the brake lamp signal and turn indicator signal is combined...
    view full answer...
  • Troubleshooting Running Light Circuit on Trailer
    I would begin by testing the trailer connector on the vehicle to rule that out. Turn the headlights on, and use a circuit tester like part # 40376 to test the socket on the connector fed by the brown wire. If you are not getting a signal on this pin, you might have a blown fuse. Make sure the ground wire from the connector on the trailer is securely grounded to the trailer frame and that each lamp is grounded to the trailer frame either by an individual ground wire connected to the trailer...
    view full answer...
  • Trailer Left Brake Light Does Not Work with Trailer Connected to a 2003 Dodge Ram 1500
    Normally when all the lights work on a trailer except one or one side it is a ground issue. Ground problems usually show up when there is more of a draw on the system. The brake light is the brightest light requiring constant higher voltage than the other lights. A weak ground would cause the brake light not to light up. Check the offending tail light for a good ground. Trailer lights usually ground through the mounting studs if there is not an obvious ground wire. In either case, the...
    view full answer...
  • Wiring a 2000 Chevy Astro with 4-Way Trailer Connector, Part # 18002
    To wire your Chevy Astro with a 4-way connector, you will need the connector itself, part # 18002. To attach the connector to your van, the wires on the connector would wire up color for color to the existing wiring on the vehicle. The dark green wire on the vehicle carries the right directional and brake light signal (which when tested with a circuit tester, should show current when the right turn signal is activated). This wire attaches to the green wire on the trailer connector. The...
    view full answer...
  • Wiring Color Code for a 4 Pole Flat Vehicle Connector
    On a 4-Way flat connector like the 4-Pole 60 Inch Long Vehicle End, # 18002, that you have referenced, white is the ground wire. The brown wire is for the taillights/running lights. Yellow is for left turn signal and brakes. Green is for right turn signal and brakes. I have included a link below to our wiring FAQ page that shows and explains the functions of various trailer connectors, both vehicle and trailer ends.
    view full answer...

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