bing tracking image
  1. Trailer Wiring
  2. Tekonsha
  3. Trailer Connectors
  4. Vehicle End Connector
  5. 4 Flat
  6. Plug and Lead
4-Way Flat Trailer Connector w/ 48" Harness and Wire Taps

4-Way Flat Trailer Connector w/ 48" Harness and Wire Taps

Item # 118001
Our Price: $10.95
You Save: 50%
Trailer Wiring
Shipping Weight: 0.22 lbs
Add to cart
In Stock
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Need help with installation?
Locate installers near me
This universal, splice-in wiring kit includes a 4-way flat connector, 48" of bonded wire, and 4 wire tap connectors that let you quickly and easily wire your vehicle to tow. Great Prices for the best trailer wiring from Tekonsha. 4-Way Flat Trailer Connector w/ 48" Harness and Wire Taps part number 118001 can be ordered online at or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (3)
  • Q & A (0)
  • Photos

Tekonsha Trailer Wiring - 118001

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

This universal, splice-in wiring kit includes a 4-way flat connector, 48" of bonded wire, and 4 wire tap connectors that let you quickly and easily wire your vehicle to tow.


  • 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)
  • Works with 2-wire electrical systems
  • Splices into your vehicle's wiring with the included quick-splice connectors
    • Bonded wires are color coded (see wiring configuration below)
  • Includes durable, molded-rubber, standard female output socket


  • Harness length: 48"
  • Max amperage: 7.5 amps per circuit
  • Wire gauge: 18
  • Limited 1-year warranty

4-Way Trailer Connector Installation

Because the color/function of the new connector wires may not match the color/function of your vehicle wires, be sure to use a tester (sold separately) to determine the function of each wire on your vehicle's tail light wiring harness before installing this connector. Once you've determined the matching functions, use the included quick-splice connectors to connect the corresponding wires on the trailer connector. Quick-splices, or "wire taps," offer a quick way to make connections without you having to strip and twist wires. Just place the wires in it and snap the cover down.

The number 1 reason trailer wiring comes up faulty is a bad ground, so make sure your grounding wire has a solid and clean connection to metal. To make this connection, you'll need a self-tapping screw and a ring terminal (sold separately).

Wiring Configuration

Wire Color Wire Function
Green Right turn and brake light
Brown Tail lights and running lights
White Ground
Yellow Left turn and brake light

Quick Tips:

We install a lot of wiring harness around here, so we thought we'd share a few tips we've picked up over the years:

  • Butt connectors - especially heat-shrink ones - provide the most secure, longest-lasting connection, so we'd recommend you grab a few and swap them out for the quick-splices in this kit.
  • Use a circuit tester on the plug terminals once the harness is installed to make sure everything's working. There's nothing worse than figuring out that you have a bad ground or a faulty connection right before you're about to hit the road.
  • Be sure to put a little bit of dielectric grease on the 4-way plug to protect the terminals from dirt, grime, and corrosion.

118001 Tow Ready Vehicle Wiring Harness with Vehicle End 4-Pole Connector and Wire Tap Connectors - 4' Long

California residents: click here

Customer Reviews

4-Way Flat Trailer Connector w/ 48" Harness and Wire Taps - 118001

Average Customer Rating:  5.0 out of 5 stars   (3 Customer Reviews)

This universal, splice-in wiring kit includes a 4-way flat connector, 48" of bonded wire, and 4 wire tap connectors that let you quickly and easily wire your vehicle to tow.


Worked excellently. No problems on the install.




See what our Experts say about this Tekonsha Trailer Wiring

  • How Do I Install a 4-Way Trailer Connector on a 2009 Suzuki Grand Vitara
    Part # 118001 will not work on your 2009 Suzukia Grand Vitara. Since the brake and turn signals on your vehicle are on separate circuits, you will need a converter. Part # 56002 is a custom fit harness that will plug into the tail light connectors of your tail lights and convert the separate brake and turn signals to allow proper function with standard 4-Pole trailers. I have added a link to the part and the instructions below.
    view full answer...
  • How to Install a 4-Way Flat Trailer Connector on a 2007 GMC Sierra Extended Cab 4X4 Pickup
    You can connect the 4-Pole 48 inch Long Vehicle End (with 4 Wire Taps), item # 118001, to the existing trailer wiring harness behind the plug that is located above the spare tire on your Sierra if it is not equipped with a factory trailer connector. To do so you will need to use a circuit tester to identify the wires that right turn and brake signal, the left turn and brake signal, and the tail light signal. Once you have found these wires and labeled them you will connect the white wire...
    view full answer...
  • Availability of 4-Flat Trailer Wiring for a 2006 Ford F-150
    If your 2006 Ford F-150 has a factory tow package, the Hopkins Custom Fit Vehicle Wiring, # 40185, that you referenced is the correct harness. If your truck does not have a factory tow package, you will need Draw-Tite Wiring, # 18252. This is a hardwire 4-Flat. You will need access to the taillight wiring. The yellow wire is left turn and stop. The brown wire is running lights. The green wire is right turn and stop. The white wire is ground. If you just need to replace a broken 4-Way,...
    view full answer...
  • How to Remove Factory Connectors to Install the Curt Harness # C55362 on a 2004 Nissan Frontier
    I believe you are asking how to get the connectors apart to install the Curt Wiring Harness part # C55362 on your 2004 Nissan Frontier. To see how to do this check out the install video I attached to the right. Our installer Joe had to use two screw drivers. One to press down on the release tab and another to pry the connectors apart.
    view full answer...
  • Trailer Wiring for a 2004 Nissan Frontier
    Your vehicle requires a converter to convert the trucks 5-Wire system down to the 4-Wire system used on trailers. You will find a connection point behind the rear bumper on the passenger side frame rail, that you will use to plug in the Plug-N-Tow (TM) Wiring Harness, item # 33515. This wiring harness has a converter installed and plugs inline with the original factory connectors. If you want to hard wire your trailer connection then you could use the Upgraded Circuit Protected Taillight...
    view full answer...
  • 4-way Options for use With a Tow Ready Mounting Bracket
    The Hopkins 4-way # HM48030 that you referenced is a great 4-way, but like you noticed, it is much larger than most 4-ways so it would not fit through the Mounting Bracket 4-Pole Flat # 18144 that you have. You basically have two choices at this point. You can either buy a different 4-way that will fit through the hole of the # 18144. Or you could cut off your # HM48030 and then run the wires through the front of the # 18144 and then reconnect the wires to the 4-way wiring of your vehicle. Check...
    view full answer...
  • Parts needed to Attach 4-Way Flat Trailer Wiring to a 4-Pin Round Harness on a 1995 Ford F-150
    You have 3 options for connecting your trailer with a 4-Way flat connector to your F-150 with 4-Way Round connector. Probably the best way to go in the long run, would be to use the T-One Vehicle Wiring Harness with 4 Pole Trailer Connector, item # 118316, to install a 4-Way Flat connector on your truck and eliminate the 4-Way round connector. I have included installation instructions for this harness for you to review. This will allow you to tow your trailer with a direct connection to...
    view full answer...
  • Trailer Lights Stopped Working on Wiring Harness # 118558 for 2013 Honda Pilot
    Thank you for your September 2013 purchase of trailer wiring harness kit # 118558 for your 2013 Honda Pilot. First, check that all of the relays are inserted properly in the harness and the fuse you installed in the engine compartment is still okay. You can also unplug the relays and connectors to inspect the condition of the contacts, looking for any dirt, potential corrosion from moisture or any other visible condition that could explain the non-functioning stop/turn lights. If your...
    view full answer...
    Image 1 for
  • Availability of a Trailer Wiring Diagram for a 2012 Honda Goldwing and 1999 Escapade SE Trailer
    Wiring your motorcycle to tow your motorcycle trailer will require some testing and investigation of the lighting configuration on your trailer. First, check the lights on your 1999 Escapade SE trailer. If the trailer has separate lights or bulbs for the turn and stop lights then the trailer will have a 5 wire connector. In this case you will need to contact Honda for wiring for the trailer, that will protect the motorcycles circuitry. If the trailer has combined stop and turn signals...
    view full answer...
  • Replacement Trailer Connector For 2001 Toyota Tundra
    If the connector you cut off your 2001 Toyota Tundra is a 4-way, the connector I recommend is part # 118001. This is a 48 inch long harness with the vehicle end 4-way connector. If you cut a 7-way connector off, then I recommend the Hopkins Endurance Quick-Install 7-Way Trailer Connector with Universal Pigtail Harness, part # HM47210. Since you said you cut the wires on your truck, you can simply attach this harness as a replacement. To keep the connector more secure I recommend part...
    view full answer...
  • Directions for Installing a Brake Controller on a 1989 Chevrolet Silverado Without Towing Package
    Installing a brake controller on your 1989 Chevy Silverado pickup is pretty straight forward. To start, you will need all of the parts for the complete installation of a trailer connector and the brake controller. The parts needed are a 4-Way trailer connector, item # 118001, or # 118315, a Brake Controller 7 & 4 Way Installation Kit, item # ETBC7, and a brake controller of your choice. Brake controllers are not vehicle specific but there are some things to keep in mind. A proportional...
    view full answer...
  • Can Curt 2-Inch RV Bumper Trailer Hitch Receiver # E-100 Mount to camper to Tow Boat Trailer
    The Curt 2-Inch RV Bumper Trailer Hitch Receiver # E-100 has enough capacity for towing a 3500-lb trailer load like your 17-foot jon boat. It will mount to a 4-inch square channel bumper using the included hardware. You will want to check with your camper manufacturer to verify that your particular camper model has the bumper and frame strength to allow towing a trailer with a GTW of around 3000-3500-lbs. Both the camper's bumper and the frame structure have to be sufficiently strong to...
    view full answer...
  • Adding Tail Lights to a Cargo Carrier at the Back of a Travel Trailer
    First for a light kit that is designed for certain cargo carriers you can use # 98174LED. It uses a 4-Way connector and since the brake and turn signal lights on your trailer are combined (based on the fact that it uses a 7-Way connector) To add a 4-Way you can tap into the trailer's lights using # 118001. And to mount it at the back of the trailer you can use bracket # 18144. Depending on the cargo carrier you have you may also need 2 of bracket # BK70BB to attach the lights.
    view full answer...

Do you have a question about this Trailer Wiring?

Info for this part was:

Employee Robert G
Expert Research:
Robert G
Employee Patrick B
Expert Research:
Patrick B
Employee John H
Expert Research:
John H
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Laura H
Updated by:
Laura H
Employee Alexander C
Updated by:
Alexander C
Employee Sabrina W
Updated by:
Sabrina W
Employee Cole B
Installed by:
Cole B
Employee Chris R
Video Edited:
Chris R
Employee Robert C
Test Fit:
Robert C

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.