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Hopkins Custom Tail Light Wiring Kit for Towed Vehicles

Hopkins Custom Tail Light Wiring Kit for Towed Vehicles

Item # HM56108
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Tow Bar Wiring

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Hopkins Tow Bar Wiring - HM56108
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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. Lowest Prices for the best tow bar wiring from Hopkins. Hopkins Custom Tail Light Wiring Kit for Towed Vehicles part number HM56108 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Hopkins Tow Bar Wiring - HM56108

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

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.



11156108 Hopkins Plug-In Simple Dinghy Towing Harness

Replaces 56108

Installation Details HM56108 Installation instructions

This Product Fits The Following Vehicles



California residents: click here



Customer Reviews

Hopkins Custom Tail Light Wiring Kit for Towed Vehicles - HM56108

Average Customer Rating:  4.9 out of 5 stars   (70 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:

Ordered and install base plate over a year ago and finally got to use it a couple of weeks ago because motorhome was in shop waiting on parts. Pandemic and supply chain issues. Anyway, the base plate and accessories work great. Dinghy tracks well. Hardly know it’s back there.



by:

The best customer service from Melissa, and her manager. Delivery and follow up was the best as always. Will continue to purchase from etrailer in the future.This is the way all companies should conduct business.



by:
2013 Chevrolet Equinox

This harness fit our 2013 Equinox perfectly, no cutting into the factory harness.



by:

Tammi did an excellent job assessing my needs and offered the Hopkins wiring harness that just plugged in and works great.
Thank you Tammy



by:

This base plate is the third Road master base plate product that we have purchased and love them , easy install and built solid. We trust Road master products.



by:
2015 GMC Terrain

Works great. Easy to install. So much better then having additional lights to carry around and install each time I tow. I just plug in the "Towed" like any other trailer, and it's all done. Would do it again if I got a new "towed."


Comments
I love both products. Getting the wire harness was such a good idea. Im happy you had it or I would be using magnetic lights and that would suck. The base plate and tow bar are perfect for towing our GMC. Unfortunately the Blue Ox cover was lost on a drive without the tow vehicle. I think they need to make the straps better to ensure they stay on during no tow driving. That is the only suggestion I have.
Nick - 04/19/2018


by:
2015 Chevrolet Equinox

I installed a tow bar setup on my parents Chevy Equinox about a year ago so they could pull it behind their motor home. With that I installed this wiring harness for the towing lights. I have to say the installation went very well and did not require a masters degree to do it. Some simple tools a little planning and a couple hours of your time and you can have this installed and working. It made the hook up a lot easier for my father because it is one plug just like plugging in a trailer. The quality is vary high and so far it has been completely trouble free. It also does not interfere with the proper operation of the lights in the car. If your going to tow a car behind your motor home I highly recommend this harness. This review setup offers a place to add pictures but the harness installs so nice that you can not see it to take a picture of it. So just imagine the wire comfortably installed along with the original wires in your car. Also along with all the other good stuff I mentioned they also have a video you can watch that will show you exactly what to do. What more could you ask for. Worth every penny.



by:

easy install



by:
2017 Chevrolet Equinox

Have had the product installed on my 2017 Chevrolet Equinox LT for one year and it has performed flawlessly! Easy item to install with a great video from etrailer.com. It is a quality product that does not have to cut into the OEM wiring harness. It just plugs into the existing connectors. I recommend this wiring harness to connect my RV to my Equinox for dinghy towing.



by:
GMC Terrain

Purchased the towing adapter for my GMC Terrain a few week ago, received it on time & boxed not damaged. Watched the videos’ about three time on how to do it myself and started one evening and finished it the next morning about three hours with Beer Breaks, LoL. All the parts fix perfectly, had no problems with any of the parts, Product is real sturdy and if you don’t know where to look at the bumper you will not see the hide away receiver brackets. Very nice product, do it yourself and save money. up loading tgwo Phoos



by:
GMC Terrain

Purchased the towing adapter for my GMC Terrain a few week ago, received it on time & boxed not damaged. Watched the videos’ about three time on how to do it myself and started one evening and finished it the next morning about three hours with Beer Breaks, LoL. All the parts fix perfectly, had no problems with any of the parts, Product is real sturdy and if you don’t know where to look at the bumper you will not see the hide away receiver brackets. Very nice product, do it yourself and save money.



by:
Chevrolet Equinox

I purchased both wiring and base plate of tow bar of my Equinox and it fit beautiful. I then purchased a trailer hitch and was pleased by all.



by:

Easy to install. Plugs into factory harness. Has worked perfectly since installed.


Comments
It is plug and play. Works perfectly. Would buy again.
Charles - 02/16/2019


by:
2017 GMC Terrain

This plug and play wiring kit is the only way to go. I've done the individual diode kit before and the small cost-saving is not worth the hassle. If a custom kit is available for my next vehicle, I will be sure to use one again. By the way, the etrailer video was a big help in the do it yourself installation process.



by:
2015 Chevrolet Equinox

The large library of 'how to' videos' that Etrailer offers are just super. They answer so many 'pre-purchase' questions. No other site seems to offer so much help. I was originally sent the wrong light kit by mistake. They had a replacement in the mail the same day I called. GREAT service.



by:

Hopkins Custom Tail Light Wiring Kit for Towed Vehicles Item # HM56108. Arrived early. Directions and Video are quite helpful. The Kit was very easy to install. This Kit was the second one I have installed and all the lights work perfectly.



by:

everything I have purchased from you had worked as expected. thank you



by:
2014 Chevrolet Equinox

hopkins wiring harness worked great on our 2014 chevy equinox. no complaints



by:

Product has been fine. Towed 2000 mi with it last year. Producy was easy to install and install videos from e trailer were very accurate. I would order again from them



by:

Easy enough to install. Worked well on a trip from Michigan to Florida and from Michigan to Tennessee. As well as couple of trips within Michigan.


Comments
Have taken couple more trips from Michigan to Florida as well as from Florida to Texas back to Michigan. Harness as performed flawlessly.
Ronald - 02/08/2019


by:

Fit perfectly and works fine.



by:

The wiring system was perfect. It installed in about 15 mins.


Comments
It is still working with no trouble at all. Just have to keep the plug connector clean and protected from weather..
Arthur S - 03/06/2021

by:
2015 Chevrolet Equinox

The quality of this wiring kit seems to be good, wire lengths were spot on, and the etrailer video was very helpful .



by:
2017 Chevrolet Equinox

Proper connections. Right amount of wire. Worked just great.


Comments
Great. Also good people to work with at etrailer.
Don W - 10/16/2018


by:

The tow package has worked great I appreciate all the help I got in making sure I was getting the right package. I was able to install it myself without any problem. Thanks again


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Show More Reviews

Ask the Experts about this Hopkins Tow Bar Wiring



  • Hopkins Tow Bar Lighting Recommendation for 2016 Chevy Equinox
    Yes, the Hopkins tow bar lighting system part # HM56108 is a confirmed fit for your 2016 Chevy Equinox and would work well for you. I attached an install video for you to check out as well.
    view full answer...
  • Recommended Tow Bar Wiring for 2013 Chevrolet Equinox
    The Hopkins Custom Tail Light Wiring Kit for Towed Vehicles # HM56108 referenced in your question is confirmed to fit your 2013 Chevrolet Equinox. This kit includes everything needed to wire your Equinox to accept your RV's tail, brake, and turn signal lights for flat towing. Additional relays are not needed with this kit on your vehicle. This will install using the built-in connection points located behind the vehicle's tail lights without needing to cut or splice any wires. I have attached...
    view full answer...
  • Can Tow Bar Wiring and Trailer Wiring be Plugged into a 2017 Chevy Equinox at the Same Time
    You should not have any trouble daisy-chaining a regular trailer wiring harness with a tow bar wiring harness, in this case # HM56108, on your 2017 Chevy Equinox. The way I would install it is to have the tow bar harness installed closest to the tail lights with the trailer wiring harness plugged into the tow bar harness. If one or neither work then switch the order they are plugged in.
    view full answer...
  • Troubleshooting Hopkins Custom Tail Light Wiring Kit for Towed Vehicles
    In order to test a Hopkins Custom Tail Light Wiring Kit for Towed Vehicles like part # HM56108 all you'd need is a test light. Simply test the stop/turn/running light signal that plugs into the factory pigtail and then see if the signal is carried out on the wire(s) that run to the converter box. If just one signal becomes inoperable then chances are the converter box is bad and the unit will need to be replaced.
    view full answer...
  • Installing Trailer Wiring Harness on 2017 GMC Terrain with Hopkins Tow Bar Wiring Already Installed
    The Curt T-Connector Vehicle Wiring Harness # 56094 referenced in your question can be installed in your vehicle that already has the tow bar wiring you mentioned installed, however they cannot be plugged in at the same time. This trailer wiring harness is confirmed to fit your 2017 GMC Terrain and will provide a 4-Way connector at the rear of your vehicle. This will install by plugging into the vehicle's existing harness, which is located behind the driver's side and passenger's side tail...
    view full answer...
  • Plug In Tow Bar Wiring and Trailer Wiring Harness at the Same Time on a 2017 GMC Terrain
    You can install trailer wiring harness # 118494 on your 2017 GMC Terrain between the tail lights and the tow bar wiring harness # HM56108 that you already have installed. So basically you will unplug the HM56108 harness, plug in the 118494 connectors to the lights, then plug the connectors from HM56108 to the 118494 and then to the other vehicle connectors that lead to the front of the vehicle.
    view full answer...
  • Hopkins Wiring Kit for Towed Vehicles on 2013 GMC Terrain
    You are correct that your tail and brake lights are on one circuit. Your vehicle has combined wiring, and all of the wires run to a single socket in the tail light housing. The Hopkins Wiring Kit # HM56108 connects behind the tail lights of your 2013 GMC Terrain and lets you wire it to accept the tail, brake, and turn signal functions of your RV. I've attached a video showing the installation onto a 2015 Terrain which is a similar process to yours. Since your brake lights come on without...
    view full answer...
  • Easy to Install Tow Bar Wiring Kit Recommendation for 2015 Chevy Equinox
    The part # HM56108 that you referenced is a confirmed fit for your 2015 Chevy Equinox and would install easily and be very reliable. I attached a install video for this in a 2015 Equinox just like yours. Because your Chevrolet Equinox 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...
    view full answer...
  • Troubleshooting the Roadmaster Even Brake 9400 ICX Wiring
    I suggest you use the Roadmaster Stop Light Switch Kit - Chevrolet Equinox / GMC Terrain, # RM-751439 for installation of your Roadmaster Even Brake, # RM-9400.
    view full answer...
  • Base Plate Kit and Lighting Recommendation for a 2016 GMC Terrain
    The 2016 GMC Terrain will require a new base plate as there was a generation change between the 2012 and the 2016. You will have to use the part # RM-523184-5 that you referenced. Since you probably have everything else to flat tow your vehicle aside from a wiring option I would recommend the Hopkins Custom fit harness part # HM56108 that will plug in line with the taillight assemblies of the vehicle. I attached an install video for this kit for you to check out as well.
    view full answer...
  • Troubleshooting Fuse Pulling Information on 2014 Chevy Equinox for Flat Towing
    The owners manual states pulling the #32 fuse for the Discrete Logic Ignition Switch as you stated but GM put out a technical service bulletin that stated for the 4-cylinder models you should leave that DLIS fuse in and pull the ABS fuse because this new procedure eliminates wobble that occurs when towing the 4 cylinder models from 2010-2017. You will want to install the battery charge line # RM-156-25 as there is a stronger pull for power while towing that can deplete your Equinox battery.
    view full answer...
  • Easy Way to Carry 12 Volt Charge Circuit to Vehicle being Flat Towed Through Tow Bar Wiring
    What you will need to do is remove the 6-way on your tow vehicle and replace it with a 7-way socket like part # HM48480 so that you can use the umibilical wiring adapter # RM-146-7 which can carry the 12 volt circuit that can charge the battery. You'll need to remove the 4-way of the harness you have installed on your vehicle so that you can install the 6-way of this kit in it's place. The charge circuit of this can then be ran directly to your vehicle battery and when connected will charge...
    view full answer...
  • Is Brake-Lite Relay Needed with Roadmaster Even Brake System on 2017 Chevy Equinox
    Yes, the Brake-Lite Relay # RM-88400 referenced in your question, which is actually included with the Roadmaster Even Brake System # RM-9400, will need to be installed with your Hopkins Custom Tail Light Wiring Kit # HM56108. The relay is needed to prevent the towed vehicle's brake signal from overriding the turn signal from the RV when you are braking during a turn. I have attached the complete installation details for this relay that you can use for reference.
    view full answer...
  • Can Flat Towing Wiring Harness Be Used With Trailer Towing Harness on 2014 Chevy Equinox
    Although your existing 4-pole can't be used for flat towing the vehicle, you can indeed still add a plug and play wiring harness for flat towing. The trailer wiring harness would connect inline between the vehicle's wiring harness and the taillight assembly. The flat towing harness would daisy chain into that connection. I'd recommend using the Hopkins # HM56108. Since removing a fuse is necessary to prevent the vehicle's battery from being drained when being towed, you can use a fuse...
    view full answer...
  • Is Brake Light Relay Required on 2015 Chevy Equinox When Flat Towing with Roadmaster EvenBrake
    There are a series of questions that have to be answered to know if your vehicle will need the brake light relay part # RM-88400. The first question we know the answer is yes since you are using the Roadmaster Even Brake part # RM-9400. Are you using a supplemental braking system that depresses the brake pedal in your towed car? No - You do not need a brake light relay. Yes - You may need a brake light relay. Continue on to the next question. Do the brake lights on your towed car illuminate...
    view full answer...
  • Custom Fit Parts Needed to Flat Tow a 2016 Chevy Equinox
    Yes we do. The Hopkins tow bar wiring kit part # HM56108 is a custom fit wiring harness for your 2016 Chevy Equinox that will allow your RV to connect to it and control the taillights. I attached an install video for you to check out as well. For an umbilical connector to go from the 4-way of this harness to the 7-way on your RV you would want the part # HM47075. You will need a few more components to flat tow your vehicle though. For a base plate kit we have the Blue Ox part # BX1689...
    view full answer...
  • Is Brake Light Relay Required for 2015 GMC Terrain Using Hopkins Tow Bar Wiring # HM56108
    The Hopkins Tow Bar Wiring Kit # HM56108 that fits your 2015 GMC Terrain includes built-in diodes to prevents electrical feedback to the car's electrical system. You will not need separate diodes or the Roadmaster Brite-Lite Wiring Converter # RM-732 but you may need the Roadmaster Brake-Lite Relay Kit # RM-88400. If the vehicle brake lights come on without the vehicle being on then you need the kit. You will also need Brake Light Switch Kit # RM-751439.
    view full answer...
  • Will the Demco Excali-Bar II Tow Bar Work With the Demco Classic Base Plate Kit on a 2016 Equinox
    Yes, the Demco Classic Base Plate Kit part # DM9518315 which is a fit for your 2016 Chevrolet Equinox will work with the Demco Excali-Bar II Non-Binding Tow Bar part DM9511009. In order to complete your flat-towing setup you are also going to need a flat-tow wiring harness, supplemental braking system, high-low adapter as well as a few other smaller items. I have attached a list of these for you below: Flat-Tow Wiring Harness - Hopkins Custom Tail Light Wiring Kit for Towed Vehicles part...
    view full answer...
  • Flat Tow Wiring For 2017 GMC Terrain
    I recommend Hopkins Custom Tail Light Wiring Kit for Towed Vehicles part # HM56108 which will plug into your vehicle's existing wiring behind the tail lights to activate the Terrains signaling functions with the motor homes. It does not require splicing like the other tow bar wiring options for your vehicle, I have attached an installation video for your reference. When you flat tow the GMC Terrain you will need to pull the ABS (fuse 16) if you have a 4 cylinder mode. you will need part...
    view full answer...
  • Can a 2017 Chevy Equinox Be Flat-Towed If So What Is Needed
    The 2017 Chevrolet Equinox is available in both 2WD (Two Wheel Drive) and AWD (All Wheel Drive). These models can both be flat-towed. In order to tow either vehicle you will need a number of different parts which I will attach for you below. Roadmaster Direct-Connect Base Plate Kit part # RM-523184-5 Roadmaster Falcon 2 Tow Bar part # RM-520 Roadmaster 64" Single Hook, Straight Safety Cables part # RM-645 Hopkins Custom Tail Light Wiring Kit for Towed Vehicles part # HM56108 Demco SBS...
    view full answer...
  • Parts Needed To Flat-Tow a 2017 Chevy Equinox
    In order to flat-tow a 2017 Chevrolet Equinox you will need a number of different parts which I will attach for you below. Roadmaster Direct-Connect Base Plate Kit part # RM-523184-5 Roadmaster Falcon 2 Tow Bar part # RM-520 Roadmaster 64" Single Hook, Straight Safety Cables part # RM-645 Hopkins Custom Tail Light Wiring Kit for Towed Vehicles part # HM56108 Demco SBS Stay-IN-Play DUO Supplemental Braking System part # SM99251 The bases plates are installed on the tow vehicle and...
    view full answer...
  • Base Plate Kit Recommendation for 2016 Chevy Equinox
    For your 2016 Chevy Equinox we have the Roadmaster base plate kit part # RM-523184-4 which is a confirmed fit as long as you don't have adaptive cruise control or active air shutters. This would work well with the Sterling tow bar you have part # RM-576. For lighting you can use the diode kit, # RM-15267, and not have to worry about cutting into the taillight housing. This will splice into your taillight wiring to allow your tow vehicle to control the taillight assemblies of the towed...
    view full answer...
  • Recommended Parts for Flat Towing 2012 Chevrolet Equinox with 36-Foot Georgetown Motorhome
    Flat towing a vehicle behind a motorhome requires 5 basic components: a tow bar, safety cables, and a lighting solution, base plates and supplementary braking system for the toad. You may care to glance at the linked article that covers each of these in detail. We also always suggest checking your owner's manual for any guidance related to flat towing the vehicle. I recommend staying with one brand of base plate and tow bar since doing so avoids the added cost and complexity of the adapters...
    view full answer...
  • Parts Needed to Flat Tow 2015 GMC Terrain
    The Roadmaster EZ Base Plate Kit # 523163-1 referenced in your question is confirmed to fit your 2015 GMC Terrain. There is no difference at all between the two part numbers you mentioned. The 523163-1A is the part number that the manufacturer (Roadmaster) uses and we simply drop the "A" when listing it on our site. In order to flat tow your Terrain, you will also need a tow bar, safety cables, a lighting solution, and a supplemental braking system (if you do not have these parts already)....
    view full answer...


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Info for this part was:

Employee Leah B
Edited by:
Leah B
Employee Andrew K
Video by:
Andrew K
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Employee Lindsey S
Written by:
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Employee Michael H
Expert Research:
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Brent H
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