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  1. Custom Fit Vehicle Wiring
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Hopkins Plug-In Simple Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector
Hopkins

Hopkins Plug-In Simple Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector

Part Number: HM11141945
In Stock
$42.88
Custom Fit Vehicle Wiring

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Custom Fit Vehicle Wiring HM11141945 - 4 Flat - Hopkins
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Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into OEM tow package wiring harness - no cutting or splicing required. 1-800-940-8924 to order Hopkins custom fit vehicle wiring part number HM11141945 or order online at etrailer.com. Free expert support on all Hopkins products. Great prices and Fastest Shipping for Hopkins Plug-In Simple Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
  • All Info
  • Reviews (11)
  • Q & A (0)
  • Photos

Hopkins Custom Fit Vehicle Wiring - HM11141945

  • 4 Flat
  • Custom Fit
  • Trailer Hitch Wiring
  • No Converter
  • Hopkins

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into OEM tow package wiring harness - no cutting or splicing required.


Features:

  • Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights
    • Designed for use with a factory tow package
    • Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
  • Connects quickly and easily - no cutting or splicing
    • Locate connection point behind rear bumper
    • Plug in connector
  • Protective connection terminals resist corrosion
  • Comes with dust cap for 4-way flat connector, cable ties, and terminal grease packet for electrical connections
  • 90-Day limited warranty


Installation

This custom-fit T-connector plugs into your vehicle's factory tow package wiring harness, which is located behind the rear bumper on the driver's side.


Once installation is complete, the 4-way connector will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure.


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.



11141945 Plug-in Simple Hopkins T-Connector with 4-Pole Trailer Connector

Installation Details HM11141945 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:


Customer Reviews

Hopkins Plug-In Simple Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector - HM11141945

Average Customer Rating:  4.7 out of 5 stars   (11 Customer Reviews)

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into OEM tow package wiring harness - no cutting or splicing required.

by:

The wiring harness was great. I only wish there was some kind of mount so the wire isn't just hanging there.

Jenny N. profile picture
Etrailer Expert

Jenny N.

2/19/2022

We do have different mounting brackets for the 4 way flat that can keep it from hanging. A simple bracket like part # HM48595 can hold it to your bumper. Another option is part # 306-X6019 which holds it magnetically to your hitch or part # C58001 fits around the 2 inch hitch receiver opening and holds it next to the hitch.

D. C. profile picture

D. C.

2/21/2023

The wiring harness plugged in easily. I recommend getting the plug mount and screw it on under the back bumper. Hopkins Fold-Over Mounting Bracket for 4-Way Flat Trailer Connector Item # HM48595



by:

The installation was very simple. I'm able to store the harness in a protective manner when not in use. All positive reults.



by:
Lexus RX 400h

Perfect plug and play for my new Lexus RX 400H. Highly recommend. Don't forget a mount for the plug. It isn't included because there are different bumpers on different Toyotas.



by:

etrailer site is not as clear cut on showing the parts that fit "only" and you have to read all the print as I ordered by price a unit not realizing it did not even fit my vehicle [without tow package]. Details always in the fine print...life sucks and then there is etrailer!



by:

Great service from this company. Everything ordered was exactly what was authorized. Its great to have all the videos of the products to watch before ordering. I definitely recommend this company, great price and selection of products. Great help from the people who work there. Extremely fast shipping also. Can’t find any better company for your equipment needs.



by:

Easy install on my 2019 RX 450H



by:
2017 Lexus RX 350

Great product plug and play product



by:

Excellent service. Adjusted my order as I had added too many items. Seamless service.



by:



by:



by:
2013 Lexus RX 350


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See what our Experts say about this Hopkins Custom Fit Vehicle Wiring

  • Does The Curt Trailer Hitch Receiver Require Removal Of Dampening Rod On 2020 Lexus RX 450h F Sport?
    The Curt Trailer Hitch Receiver # C13282 will mount to the same holes as the dampening rod on your 2020 Lexus RX 450h. So the dampening rod will be permanently removed from your Lexus. Since the main purpose of the dampening rod is to remove body flex, the receiver will do the same job once it is installed. For wiring you will need a 4-pole, you will need the Hopkins Plug-In Simple Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector# HM11141945 if you have the factory...
    view full answer...
  • Connection Point for Hopkins Wiring Harness HM11141945 on 2019 Lexus RX 450H with Tow Package
    The 2019 Lexus RX 450h is part of the same generation of this vehicle as the 2018 model year so most aftermarket parts should fit. Although part # HM11141945 has not yet been confirmed for the 2019 you can check to see if there is a tow package connector on the car to match the one in the photo. If the car is equipped with the tow package and has a 4-wire square connector like the one illustrated then you can use Hopkins part # HM11141945. The connection point is a harness on the driver's...
    view full answer...
    Image 1 for Image 2 for
  • Best 4-Pole Wiring Harness for 2018 Lexus RX 350 with Factory Towing Package
    The 2018 Lexus RX 350 with the factory tow package wiring prep will have a connection point designed to match the plug on parts # 118252, # 56083 and # HM11141945. Each of these three similar items will work with the factory tow package that has a square connector to mate with the one shown in the included photo. Of these three products I recommend the Tekonsha # 118252 because we find their electrical items to be the most reliable of all those we offer. Please refer to the included installation...
    view full answer...
    Image 1 for Image 2 for
  • Fit of Curt C13282 on 2020 Lexus RX450h
    According to Curt, their # C13282 Class III hitch is a fit for all models of the 2016 - 2020 Lexus RX 450h. If you'll be using the hitch for towing, you'll need a few other items. For the RX450h, use # HM11141945 for vehicles equipped with the factory tow package, or # 119250KIT for vehicles without the tow package. For a ball mount, use # C45010 and # 19260 for the 1-7/8 or # 63845 for a 2 inch trailer ball. You'll also need a # PC3 hitch pin. If you click the provided link, you can...
    view full answer...
  • Recommended Hitch for a 2019 Lexus 450h
    Thanks for the picture and congratulations on the new trailer. You have done a good job finding the parts you will need to tow your 2023 Safari Alto with your 2019 Lexus 450h. I can confirm most of them for you and then I will make a couple different recommendations based on your specific needs. The parts you have found that I recommend you do purchase are the: Curt Trailer Hitch Receiver - Custom Fit - Class III - 2" item # C13282. Curt Rubber Tube Cover - 2" item # C22272. Draw-Tite...
    view full answer...
    Image 1 for
  • Plug-In Wiring Harness for 2020 Lexus RX 350 With Factory Tow Package
    There is a simple plug-in harness for your 2020 Lexus RX 350 with the factory tow package. What you need is the Hopkins Plug-In Simple Wiring Harness for Factory Tow Package # HM11141945. This installs very simply by only plugging into the harness under your Lexus, as you can see in the linked example install video I added. This harness be be exactly what you need to power your trailer's lights.
    view full answer...

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


Info for this part was:

Employee Andrew K
Video by:
Andrew K
Employee Zach D
Video by:
Zach D
Employee Michael B
Video by:
Michael B
Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Jacob T
Video Edited:
Jacob T
Employee Kathleen M
Video Edited:
Kathleen M
Employee Chris R
Video Edited:
Chris R
Employee Adam R
Expert Research:
Adam R
Employee Randy B
Test Fit:
Randy B
Employee Shane H
Test Fit:
Shane H
Employee Robert C
Test Fit:
Robert C
Employee Alexander C
Written by:
Alexander C

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