bing tracking image
  1. Flat Tow Wiring Harness
  2. Hopkins
  3. Wiring Harness
  4. Plugs into Vehicle Wiring
  5. Tail Light Mount
  6. Custom
Hopkins Custom Tail Light Wiring Kit for Towed Vehicles
Hopkins

Hopkins Custom Tail Light Wiring Kit for Towed Vehicles

Part Number: HM39VR
In Stock
ChristmasTree SantaHat Arrives before Christmas SantaHat ChristmasTree
$83.94
Retail:$102.09
You Save: 18%
Flat Tow Wiring Harness

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

Add to cart
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

Customer Photos

Need help with installation?
Locate installers near me
Wire your vehicle and get the signal lights required for flat towing without having to splice into your wiring with this custom, plug-in harness. Integrated diodes prevent feedback from RV for safe operation. 1-800-940-8924 to order Hopkins flat tow wiring harness part number HM39VR or order online at etrailer.com. Free expert support on all Hopkins products. Great prices and Fastest Shipping for Hopkins Custom Tail Light Wiring Kit for Towed Vehicles. Flat Tow Wiring Harness reviews from real customers.
  • All Info
  • Reviews (25)
  • Q & A (0)
  • Photos

Hopkins Flat Tow Wiring Harness - HM39VR

  • Wiring Harness
  • Plugs into Vehicle Wiring
  • Tail Light Mount
  • Hopkins
  • Custom

Wire your vehicle and get the signal lights required for flat towing without having to splice into your wiring with this custom, plug-in harness. Integrated diodes prevent feedback from RV for safe operation.


Features:

  • Lets you wire your vehicle to accept your RV's tail, brake, and turn signal lights for flat towing
    • Provides 4-way flat plug at front of towed car to connect to motor home
  • Plugs in quickly and easily - no cutting or splicing of wires
    • Connection points are located behind your vehicle's tail lights
  • Prevents electrical feedback to safeguard towed car's electrical system
    • Weatherproof box keeps built-in diodes protected
  • Won't interfere with electrical system when towed car is not hooked up to RV
  • Custom designed for your vehicle
  • Includes wiring harness, mounting bracket, and installation hardware
    • Extension loop for connecting towed car to RV is sold separately
    • Brake light relay (RM-88400 - sold separately) may be required if used with supplemental braking system
  • 90-Day warranty


Wiring Your Towed Car with Hopkins

Wiring your car for flat towing has never been easier. No more testing wires or splicing into your electrical system. No need to painstakingly position multiple diodes beneath your vehicle. No worries about voiding your warranty. With this custom-fit towed vehicle wiring kit from Hopkins, all you have to do is plug the harness into your vehicle's existing wiring, which is located behind your car's tail light assemblies. No cutting, tapping, or splicing is required.


After plugging in the wiring harness, use the included bracket to mount the 4-way flat connector at the front of your towed car. An extension loop (sold separately) is required to connect your towed car to your RV.


Do You Need a Brake Light Relay?

Because your vehicle has a combined lighting system - wherein the brake signals and the turn signals are carried on a single wire - a brake light relay (RM-88400 - sold separately) may be required if you use a supplemental braking system with your towing setup. A supplemental braking system depresses the brake pedal in your towed car every time you apply the brakes in your RV. So, if your towed car's brake lights illuminate when the brake pedal is pressed and the engine is off - as is the case when towing - then you need to install a relay to ensure that the lights on your towed car always act in accordance with the signals sent by your RV via the wiring harness. Without a relay, the brake signal from your towed car will override the turn signal sent by your RV when you slow down to make turns, creating a potential hazard.



56210 Hopkins Plug-In Simple Dinghy Towing Harness

Installation Details HM39VR Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:


Customer Reviews

Hopkins Custom Tail Light Wiring Kit for Towed Vehicles - HM39VR

Average Customer Rating:  4.6 out of 5 stars   (25 Customer Reviews)

Wire your vehicle and get the signal lights required for flat towing without having to splice into your wiring with this custom, plug-in harness. Integrated diodes prevent feedback from RV for safe operation.

by:

Awesome product. It is so nice to just plug and play. Especially when dealing with the lower voltage needs of LED’s. Thanks Etrailer for providing a this product.



by:

Alexis a reliably professional guy who I can just email or leave a voice mail and he does the rest. He looks up my vehicle on file and parts history, what the new application is, and what, if anything, I need. He gets back to me with shipping options and all I do is select one and I’m done. The fact that I can email and call him DIRECTLY (I’ve been doing this for 2 years now) manes etrailer stand out as my preference (Try THAT with Amazon).
*I* know Alex is not “my” employee, but onlookers would think he was

Exceptional service guys.
Thank you.
-Jude.
New Hampshire



by:
2024 Jeep Gladiator

This product works great!! Easy to install and this is the third vehicle that I have installed the Hopkins wiring in my tow vehicle. I would definitely suggest purchasing this product.



by:

Repeat customer, happy with the variety of equipment and materials available. I enjoy the professional process they use in presenting their orders; it's itemized and personal, depicting which employee took care to complete my order. I find they're reliable and accountable, courteous and polite.



by:

Unbelievably quick delivery. This was the exact Item I needed at a great price. Thanks eTrailers!!



by:

Just what I needed delivered quickly.



by:

Took a bit longer than expected



by:

quick, on time delvery.



by:



by:



by:



by:
2021 Jeep Gladiator



by:



by:



by:



by:



by:



by:
2021 Jeep Wrangler Unlimited



by:



by:



by:



by:
2023 Jeep Gladiator



by:



by:



by:


25
25

See what our Experts say about this Hopkins Flat Tow Wiring Harness

  • Recommended Plug and Play Flat Towing Wiring Harness for a 2020 Jeep Wrangler
    Yes, we do! It is the Hopkins Custom Tail Light Wiring Kit item # HM39VR. This will give you a plug and play set up to control your 2020 Jeep Wrangler's lights with your RV.
    view full answer...
  • Will Hopkins Flat Tow Wiring Work with LED Lights and Sensors on a 2024 Jeep Wrangler JLU
    Hey Steve, thanks for reaching out again! Hopkins doesn't have any exceptions for their Wiring Kit # HM39VR which normally means it's compatible, but even though this is easier to install than a lot of the other options, from my experience I try to shy away from most of the Hopkins wiring solutions because they just simply aren't super reliable. The best option for your 2024 Jeep Wrangler Unlimited is the Roadmaster Smart Diode 7-Wire to 6-Wire Wiring Kit # RM63MR and is ultimately what...
    view full answer...
  • Hopkins vs. Curt Flat Tow Wiring Harness For 2024 Jeep Wrangler
    Hi J, Honestly the Curt Custom Tail Light Wiring Kit for Towed Vehicles # C96JR and Hopkins Custom Tail Light Wiring Kit for Towed Vehicles # HM39VR for your 2024 Jeep Wrangler are the same thing. They are both plug-in so you don't have to cut any wires, and the only difference really is the manufacturer (who charge different prices and thus the price difference). Since you were satisfied with Hopkins previously, and they are known to be reliable, I'd go with the # HM39VR.
    view full answer...
  • Can You Use The Blue Ox Tow Bar Wiring Kit On A 2021 Jeep Wrangler Ulimited
    For your 2021 Jeep Wrangler Unlimited, you can use either the Hopkins Custom Tail Light Wiring Kit for Towed Vehicles # HM39VR you mentioned, rather than the Roadmaster Wiring Kit with Smart Diodes # RM47ZR. If you choose not to use # RM47ZR and you use # BLU79FR you will not need any additional wiring as this is a plugs into your vehicle's harness. If you choose to use # RM47ZR, then you may need the Roadmaster Brake-Lite Relay Kit # RM-88400 if you use this kit with a supplemental braking...
    view full answer...
  • Will Hopkins Tow Bar Lighting Kit HM39VR Fit 2019 Jeep Wrangler Unlimited
    Hey Bill, yes the Hopkins custom fit tow bar lighting kit # HM39VR is a confirmed fit for your 2019 Jeep Wrangler Unlimited.
    view full answer...
  • Recommended Custom Tow Bar Wiring Kit for a 2021 Jeep Wrangler Unlimited
    Hey Patrick, so I took a peek and what we have for you and I was able to find the Hopkins Custom Tail Light Wiring Kit for Towed Vehicles # HM39VR which is a custom fitting harness that plugs into your existing wiring without splicing. As far as the Roadmaster Stop Light Switch Kit # RM-751490 goes, you are going to need that with your Roadmaster Even Brake Portable Flat Tow Brake System # RM-9400 to complete install. You're also going to need the 12 Volt Outlet Kit, 20 amps # RM-9332.
    view full answer...
  • Recommended Wiring Harness for a 2021 Jeep Wrangler Unlimited W/ Park Assist
    Michael, since your Jeep has the park assist then you are going to need the Roadmaster Wiring Kit with Smart Diodes for Variable Voltage LED Tail Lights # RM47ZR. This kit is going to ensure that your LED lights function as they should while being towed, will prevent electrical feedback, and includes two smart diodes, a wiring harness, a split loom, ring terminals and zip ties,
    view full answer...
  • Flat Tow Parts Recommendations for a 2024 Jeep Wrangler Sport
    Hey Todd, thanks for reaching out! Here are the parts I recommend using to flat tow your 2024 Jeep Wrangler Sport JL V6: - Roadmaster Direct-Connect Base Plate Kit # RM-521453-5 (for factory plastic or steel bumper) - Roadmaster Nighthawk All-Terrain Tow Bar w/ LED Lights # RM-676 - Custom Tail Light Wiring Kit # HM39VR - Brake Kit # DM86VR for Motorhome Hydraulic Brakes or Kit # DM26VR for Motorhome Air Brakes - High-Low Adapter (see attached article - bar height is 20.5") I really...
    view full answer...

Do you have a question about this Flat Tow Wiring Harnes?


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Joshua S
Video Edited:
Joshua S
Employee Ryan G
Test Fit:
Ryan G
Employee Andy C
Installed by:
Andy C
Employee Amanda K
Written by:
Amanda K

At etrailer.com 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.


Product Experts Available Now!
Call 1-800-940-8924