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4-Pole Hardwire Kit with Circuit Tester

4-Pole Hardwire Kit with Circuit Tester

Item # 18252
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Tekonsha Vehicle End Connector Wiring - 18252
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Hardwire 4-pole trailer connector kit for vehicles with combined wiring - where the turn and brake signals are sent along the same wire. Quick-splice connectors and circuit tester included. Lowest Prices for the best wiring from Tekonsha. 4-Pole Hardwire Kit with Circuit Tester part number 18252 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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Tekonsha Wiring - 18252

  • Trailer Connectors
  • Vehicle End Connector
  • 4 Flat
  • Plug and Lead
  • Tekonsha
  • 6 - 10 Feet Long

Hardwire 4-pole trailer connector kit for vehicles with combined wiring - where the turn and brake signals are sent along the same wire. Quick-splice connectors and circuit tester included.


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
  • Tail light, stop and turn functions printed on wires
  • Ground wire runs full length of assembly
  • 18-Gauge bonded wires
  • Includes circuit tester and 4 quick-splice connectors


Specs:

  • Harness measures 72" long
  • Maximum amperage:
    • Stop/turn lights: 7.5 amps per circuit
    • Tail lights: 7.5 amps per circuit
  • Limited 1-year warranty


18252 4-Pole Hardwire Kit with Circuit Tester

20252 Alternate

Installation Details 18252 Installation instructions

This Product Fits The Following Vehicles




Video of 4-Pole Hardwire Kit with Circuit Tester

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




Video Transcript for Tekonsha 4-Pole Hardwire Kit Installation - 2007 Hummer H3

Today on our 2007 Hummer H3 we're going to be taking a look at and showing you how to install the Tekonsha four pole hardwire kit with circuit tester.Here's what our wiring's going to look like once we have it installed. Now it is going to live on the outside of her Hummer right by our hitch so it'll be ready when we want to hook up. It's going to provide us with a four pole flat trailer connector so we have all the required lights to get down the road safely, like our taillights, our turn signals, and our brake lights.Our kit is going to be hardwired into the trailer wiring that's already on our hummer. There should be four wires just like these that are just going to be tucked up underneath the bumper, then we can attach these two. Our kit is going to come with all the necessary hardware to get it in place, like quick splice connectors as well as a tester so we can test and verify all of our wiring.When we do go to install this, we'll have more than enough wire to go from our factory wire underneath to our hitch because we're going to get a total of six feet of four pole wire. But now that we've seen the end result, let's show you how to get it installed.To begin our installation, we're gonna come to the back of our H3 and we're going to want to go underneath just forward of where our muffler is.

Right above our muffler on the driver's side, we're going to have this opening right here. If we reach up we should be able to find a harness, but it'll have several wires attached to it. We're going to pull that down and you're notice that the wires are going to have kind of a protective coating on the end. These are the four wires we want to work with. There's gonna be a white one, a green one, a yellow one, and a brown one.Now we can take a tester in our kit you want to hook this end to a solid ground point, then we can probe our wires.

I'm going to be using a different style tester that works exactly the same. We're just going to ground one end and then use this end appears pierce our wires.Right now I have my left turn signal on. I'm going to check the yellow wire and make sure we're getting that signal through. We can see that we are getting a signal on our left turn signal from our yellow wire. I'm going to go ahead and turn my left turn signal off and we'll turn our right turn signal on so we can isolate that signal.

Our green wire should be our right turn signals. When we test it we are getting a right turn signal so we know that's the right wire. I'll go ahead and turn the turn signals both off. We're going to turn our taillights on so we can see if our brown wire is our taillight circuit.You can see I'm getting a constant power source, which means that is going to be our taillight circuit. It also means that this white wire is going to be our ground wire so we can start making all of our connections.We'll start by cutting out that coating that's on the end of all of our wires.

Then we're going to strip back the end of each one of our wires. In your kits you're going to have these quick splice connectors. However, I'm going to be replacing these with butt connectors to connect my wires. But if you want to know how to use these, I have a spare piece of wire that'll show you how it's going to work.We're going to take one wire from either our harness or our kit and it's going to go all the way through. That way you can pass your wire through. Then you would take the other wire you're going to connect and slide it into the terminal. That one's going to stop, then we grab a pair of pliers and we're going to squeeze that center tab down until it pierces both wires and then we just close the connector up.Now if you are using these, I would suggest wrapping it up with some electrical tape that'll help protect it a little bit better. We can grab our harness and we'll start by stripping all the wires on that as well. You take your butt connector or your quick splice, we'll put one end on our harness and we'll crimp it in place. Find the corresponding wire, in this case will be the green wire, and we'll connect the two together.Once this one's connected we're just going to repeat that process and connect to all of our wires, color for color. I'm going to take a heat gun to shrink down my butt connectors, but if you're using an open flame like a torch or a lighter, you want to be extremely careful not to burn or char the connectors or the wires themselves.To help protect my wires a little bit I'm going to take some electrical tape and wrap up all my connectors and the wires that are pretty close to the muffler here. We're going to route the end of our four pole to the center of our hitch so it'll be ready when we want to tow. We're also going to tie up all the excess so it's out of the way and away from our exhaust where it won't get damaged. I went ahead and plugged in my four pole tester because the last steps going to be making sure that all the circuits are working properly.If I turn on my headlight circuit you can see that the taillights are coming on as well as the left turn signal, the right turn signal, my brakes and my brakes and my turn signals. All we have left to do now is hook up to our trailer and hit the road.That'll finish up your look at the Tekonsha four pole hardwire kit with circuit tester on our 2007 Hummer H3.


Customer Reviews

4-Pole Hardwire Kit with Circuit Tester - 18252

Average Customer Rating:  4.6 out of 5 stars   (137 Customer Reviews)

Hardwire 4-pole trailer connector kit for vehicles with combined wiring - where the turn and brake signals are sent along the same wire. Quick-splice connectors and circuit tester included.

- 18252
by:
2005 Ford Focus

Easy. 141933


Comments
Everything is working great. Ill be ordering a hitch and wiring kit for our 2014 Accord soon.
Roy A - 07/20/2015

13507

- 18252
by:

First thing I noticed were the online videos that can be saved to a file. nice! also noticed the instructions for assembly of the tow bar was small and difficult to read, (my mechanic was crying throughout the installation) There were no instructions on the wiring kit installation, even a photo of the wire to wire color placement would have helped, but my mechanic went on line and got the photo from an outside source - thus the 4 stars, not five. - other than that it worked out very well, the products are solid, well made, and superbly engineered. everything was inside! thanks ! 611856


Comments
We have a link to the installation instructions as well as some install videos on the product description page.
-- Mike L - 03/15/2019

50563

- 18252
by:
2007 Ford Focus

This was a pain in the rear end. Wires were not labeled and the tester was useless. Had to go to online for some instructions (none included with kit). Took a long time to get it wired to the car. 591348


Comments
On the product page, we have a link to the instructions as well as a couple of install videos.
-- Mike L - 12/17/2018

46816

- 18252
by:
2014 Smart fortwo

Thanks to the video I did not have a problem installing the trailer wiring on my 2014 Smart Fortwo. Thanks 649745



- 18252
by:

Ordered a few weld on trailer hitch receiver tubes among other trailer parts. Parts were delivered in a timely manner and the quality of the receiver tubes is excellent. I will buy from this group in the future when I need trailer parts. 802902



- 18252
by:

I needed a hitch and wiring harness to pull a small trailer for hauling lumber. The harness was easy to install and has worked without any problems over the past year. 793416



- 18252
by:

The wiring harness is working great. The installation was pretty easy also. 787382



- 18252
by:

Easy to order, shipped quickly, installed easily. I ordered the wiring with it took me about an hour to wire and install the hitch. Direct bolt up no problem. 787267



- 18252
by:

Product as described and very easy to install. In my case it didn't work, because the original wiring on my truck apparently is bad and I couldn't figure out what was faulty, so I ended up getting another harness that plugs into existing tail light harness, which worked great. 764508



- 18252
by:
Saturn Sky

Easy to connect to the Saturn Sky. Good directions were included. 749834



- 18252
by:

Awesome product never any issues use along easy install practically don’t need instructions 720534



- 18252
by:

I don’t know if I got all the parts as they where lose in box with brown paper to hold. After trips to the local hardware store & your excellent video, I was able to install. Have not hooked up to trailer yet, but all tested out good per instructions. More after hook up to trailer & field test. 706032



- 18252
by:
2003 Infiniti I35

Easy to install evem for a 72 year old 691626



- 18252
by:

Works as it should! 681523



- 18252
by:
2000 Buick Century

I used this company before and they are excellent 667861



- 18252
by:
1984 Jeep CJ-7

I got a 4-wire harness to connect my jeep to a utility trailer. The harness worked perfectly. The connectors were good--surprisingly, they were stuffed with noncorroding gel so that the jeep's wires are protected. There were no specific instructions for the hookup, but simply removing the taillight lenses showed which color wires to splice. The supplied tester failed to function, but that wasn't a problem at all--I didn't really wish to poke additional holes into the wires anyway. Took a half hour to complete. 651124



- 18252
by:

Good 597257



- 18252
by:

Worked as described. Quality product one year later. 579074



- 18252
by:

Exactly what I was looking for. Great price and fast shipping. 566576


Comments
Works great!
Stephen A - 09/19/2019

61295

- 18252
by:
1997 Chevrolet Cavalier

Delivered fast, good quality. 564185



- 18252
by:

Easy to install, 15 minutes no problems ! 555555



- 18252
by:
2000 Chevrolet Blazer

fine 547858



- 18252
by:

Product worked great. The wires are long enough with plenty extra for future needs. the circuit tester was a nice bonus. Shipping was very fast. 546104



- 18252
by:
1987 Dodge Grand Caravan

fast delivery how ever installation instructions were opposite to the very popular trailer rental connection 542493



- 18252
by:
1999 Ford F-150 and F-250 Light Duty

This is the 3rd excellent review I have written about eTrailer. com this month. Bottom line the product came as and performed exactly as I expected. Very good quality at a fair price. Their products, pricing and overall service are exceptional. You can't go wrong dealing with this homegrown American company. I am confident this will not be my last positive review. 522359


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Ask the Experts about this Tekonsha Wiring

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    Great Truck! For a 1965 C10, you would use a # 18252 that would hardwire into the existing taillight circuits that are easily accessible under the vehicle at the rear. The included tester makes locating the correct circuits to tap into very easy. Have a helper activate the left turn signal, and probe the wires feeding the drivers side tail light assembly until you find the wire that lights the tester. Once the proper wire is found, tap the yellow wire of the connector into it. Do the...
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    The Chevy Express chassis most likely will not have any tow package wiring, but if it did there would be a bundle of wires under the driver's side floor mat up by the firewall. This wiring is more likely to be present if the motorhome has a factory 7-way trailer connector. You can contact Forest River Customer Service at 574-534-4058, and if you provide them with your VIN, they can verify if your vehicle is equipped with the tow package wiring. If the wiring is not present, you'll need...
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    I have the wiring diagram, videos and instructions for the 4-Pole Hardwire Kit with Circuit Tester # 18252, attached to this help page. White Wire = Ground Green Wire = Right Turn/Brake Brown Wire = Running Lights Yellow Wire = Left Turn/Brake
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