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  1. Tow Bar Wiring
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Hopkins Custom Tail Light Wiring Kit for Towed Vehicles

Hopkins Custom Tail Light Wiring Kit for Towed Vehicles

Item # HM56009
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Tow Bar Wiring

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HM56009 - Custom Hopkins Tow Bar Wiring
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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. Wires as combined lighting system. Lowest Prices for the best tow bar wiring from Hopkins. Hopkins Custom Tail Light Wiring Kit for Towed Vehicles part number HM56009 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (72)
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Hopkins Tow Bar Wiring - HM56009

  • 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. Wires as combined lighting system.


Features:

  • Lets you wire your vehicle to accept your RV's tail, brake, and turn signal lights for flat towing
    • Wires towed car as combined system so that brake and turn signals travel along same wire
    • 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 near rear bumper
  • 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 at the rear of the vehicle. 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.


Separate vs. Combined Lighting Systems

Some automobiles operate on a 3-wire system, wherein the brake signal and the turn signals travel along different wires to illuminate different lights. (Typically, these vehicles have amber turn signals.) This is referred to as a "separate lighting system." When you hook up for flat towing using this harness, your towed car's lighting system will operate in a combined fashion regardless of whether it typically has combined or separate lighting. This means that the brake and turn signals sent by your RV to your towed car will be carried on a single wire. As a result, your car's brake lights will do the flashing for the turn signals. Your vehicle will still function as designed when not hooked up to your RV.


Do You Need a Brake Light Relay?

Because this harness wires your vehicle as a combined system, 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.



56009 Hopkins Plug-In Simple Dinghy Towing Harness

Installation Details HM56009 Installation instructions

This Product Fits The Following Vehicles



California residents: click here



Customer Reviews

Hopkins Custom Tail Light Wiring Kit for Towed Vehicles - HM56009

Average Customer Rating:  4.9 out of 5 stars   (72 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. Wires as combined lighting system.

- HM56009
by:
2016 Ford F-150

This kit made wiring my factory tail/turn/stop lights so simple I wish I had done this much earlier. Since my F150 had the traffic detectors in the tail light housing I didn’t want to start modifying them with diodes, etc. I already had trailer light wiring to the rear of the truck from a six way plug at the front. I used this to plug in a homemade light bar that worked ok but was not optimal to my way of thinking. The Hopkins kit that plugged directly into the factory harness was perfect. It is clean and simple and makes me happy knowing there is no unnecessary mods to the factory wiring.



- HM56009
by: 04/20/2022

The left turn signal on my toad stopped working. I will probably need to take the entire harness out and replace it. It was a great idea if it still worked.


Comments
I would start with testing for the left brake signal going into the black converter box and then also coming out of the black converter box. If the signal is coming through, then further testing would be needed to see where it is not. If there is not a signal, then the harness would need replacing as you have theorized.
-- Etrailer Expert Jenny N - 04/20/2022


- HM56009
by:
2015 Ford F-150

The light kit has been installed on my 2015 F-150 for over a year and never had any issues. A quick and easy way to install tow lights on my truck.


Comments
Stilling working like it is new. No issues and one of my better purchase
Michael - 02/13/2022


- HM56009
by:

Easy, plug & play operation on a 2016 D150. Works like it should. Very pleased.



- HM56009
by:

Excellent product, great quality, insulation instruction were fantastic with great details, simple to follow, complete with actual underneath frame pictures of my make, model and year of truck, that made install quick and fool proof, it’s been installed for one year with no issues. Well worth the money.



- HM56009
by:
2017 Ford F-150

I purchased this kit for my 2017 f150 it is plug and play awesome kit I just wish I could get a plug in kit for my 2021 Jeep JL



- HM56009
by:
2018 Saturn Relay

Just what I needed for my 2018 F-150. My Lariat has the LED tail lights and this kit works. I added the relay kit RM-88400 as well.



- HM56009
by:
2018 Ford F-150

Very easy to install but watch the video on the website, the connector is not as pictured or as located in the written directions that come with it. It literly took longer to run the wires along the frame rail and zip tie them to make the connections. I used the black 4 way holder and attached it to my bumper bit i don't like it, if i was to do it over i would just hide it behind the license plate. 2018 F150 XLT 4x4


Comments
Still working great
Eric - 10/20/2020


- HM56009
by:
Ford F-150

Awesome kit. So much easier than having to remove taillight and splice into my F-150 wiring. Just plugs into existing wiring harness.


Comments
1 year out, still working great.
James D - 02/27/2021


- HM56009
by:
2017 Ford F-150

Looks great should be easy hookup



- HM56009
by:
2018 Ford F-150

Very happy with etrailer for the purchase of a Blue Ox tow bar with needed hook ups for lights, etc and an Air Force One Brake system for my 2018 F150. Crystal did a great job of comparing options and matching pricing from across the web. She offered free installation. The Installer, Shane was awesome, I wanted all hookups hidden by the front plate on the F150 when not towing, Shane came through and then some. Finally, the manager Robert was excellent on follow-up as we had some air leak once we got home. etrailer stood behind everything and follow was exceptional. Very pleased!



- HM56009
by:
2018 Ford F-150

Ford has at least three different electrical wiring plugs all about the same size, the picture really doesn’t show what is actually there! Try them all, once you find the right plug, all works fine!



- HM56009
by:

Light kit was delivered very fast. Went together and worked as advertised. Always had good service from etrailer.


Comments
Excellent, easy to install.
Kenneth - 02/09/2019



- HM56009
by:
Ford Transit Connect

My daughter moved the package indoors while I was on vacation. I did not open the package until 9 months later when I first needed it. Part of the components were missing. The box was damaged in transit. etrailer went above and beyond to insure that I received the parts needed to use the unit. Great customer service. I am a very satisfied customer. etrailer is a pleasure to have as a supplier. They worked with me when they were not bound to do so, which is a great quality to have these days. More companies should treat their customers like this.



- HM56009
by:

Worked great



- HM56009
by:

All seems to function as designed with no issues



- HM56009
by:

very good product. shipping fast



- HM56009
by:
2019 Ford F-150

Very good experience locating and ordering base plate and wiring harness etc. for my 2019 F150 that I'll be towing behind motor home. Everything was well packaged and delivered as promised. I recommend etrailer for your products.



- HM56009
by:
2018 Ford F-150

This is awesome,no splicing of wires plugs into existing wire harness on 2018 F 150


Comments
Still going strong!
Randall - 09/19/2019



- HM56009
by:

Excellent product great factory like weatherproof connects. Plug & play hardest part was to run the wiring harness to the front of the vehicle. Which really was not hard at all, I would definitely recommend this product to anyone wanting to flat tow their vehicle.



- HM56009
by:

I will be installing this on Friday Aug. 14th, I have looked through all of the installation videos, and will be connecting this to a 6-way round connector. Thanks for all of the online information, it is great!!



- HM56009
by:

This kit was very easy to install and works as expected. I tow a dinghy about 1x per month and this kit has really made the set up a quick and easy job



- HM56009
by:
2018 Ford F-150

I just installed the wiring harness (HM56009). It was very easy, just plug and play. It only took about a half hour to install.



- HM56009
by:

I couldn't be happier with this product. It has worked flawlessly and took 10 minutes to install. I highly recommend it



- HM56009
by:

Direct plug in. Easy installation


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Show More Reviews

Ask the Experts about this Hopkins Tow Bar Wiring



  • Troubleshooting Hopkins Wiring Harness to Flat Tow a 2018 Ford F-150
    We've actually heard of this issue before. You can thank one of our tech support guys for finding a simple solution for this. Even Hopkins wasn't aware of it. First of all the harness is just fine and you didn't install anything incorrectly on your 2018 Ford F-150. Technically, you can just keep towing your truck as is and you won't have an issue other than the lights look weird. Like you said, your F-150 has two bulbs in each tail light for the turn and brake lights; one on top and...
    view full answer...
  • Does Hopkins Tow Bar Harness part # HM56009 Fit 2018 Ford F-150
    The Hopkins Flat Tow wiring harness part # HM56009 that you referenced does fit both a 2015 and a 2018 Ford F-150 and would be a great solution for your 2018 model.
    view full answer...
  • Is T-Section of Hopkins Harness A Separate Part
    Just the t-section of the Hopkins Custom Tail Light Wiring Kit for Towed Vehicles # HM56009 is not available as a separate part; you would need the whole kit in order to get this section of the harness.
    view full answer...
  • Will the Hopkins Custom Tail Light Wiring Kit # HM56009 Fit a 2018 Ford F150
    Yes, the Hopkins Custom Tail Light Wiring Kit # HM56009 is confirmed to fit all models of the 2018 Ford F-150. It will work perfect for flat towing your F-150. Keep in mind that a complete flat towing setup includes a base plate kit, tow bar, safety cables, tow bar wiring (which is what you inquired about), a supplemental braking system, and possibly a high-low adapter. If you are missing any of these pieces just let me know and I can make some recommendations for you.
    view full answer...
  • Plug and Play Tow Bar Wiring Recommendation for 2018 Ford F-150
    For a plug and play style of tow bar lighting kit that is a confirmed fit for your 2018 Ford F-150 we have the Hopkins kit part # HM56009 that is a confirmed fit. This plugs in line with the taillight wiring of your truck and makes for a very easy install.
    view full answer...
  • Brake Light Malfunction When Not hooked Up To Tow Vehicle
    Since you've already replaced the Hopkins Custom Tail Light Wiring Kit for Towed Vehicles Item # HM56009 and are still having the same issue I believe the issue might be with your factory wiring hookup in your vehicle. Check the connector to make sure you don't have any bent pins or debris that could cause a faulty connection. I recommend using some dielectric grease to prevent corrosion and moisture that could cause faulty pin connections.
    view full answer...
  • Does Hopkins Tow Bar Lighting Kit part # HM56009 Fit 2015 Ford F-150 with BLIS
    The Hopkins Tow Bar Lighting Kit part # HM56009 fits all models of the 2015 Ford F-150 so it does work on yours that has BLIS.
    view full answer...
  • Tow Wiring Harness For F-150 With "BLIS" System
    The Hopkins Tow Bar Lighting Kit part # HM56009 fits all models of the 2015 Ford F-150 including those with the BLIS system.
    view full answer...
  • No Power When Using Hopkins Custom Tail Light Wiring Kit for Towed Vehicles for 2019 Ford F-150
    The Hopkins Custom Tail Light Wiring Kit for Towed Vehicles part # HM56009 which is a fit for a 2019 Ford F-150 uses the vehicle's trailer tow package ports for power. If you're having issues then I recommend checking the trailer towing fuses in the power distribution fuse box. If you still have issues it will be a good ideal to rule out the umbilical or motorhome using a circuit tester. The only other thing that it could be is the integrated converter which would be the last thing to...
    view full answer...
  • Replacing a 4-Way with a 6-Way when Flat Towing a 2015 Ford F-150 Behind an RV
    For help with wiring up the 6-Way I have included a picture that shows how both a vehicle side and trailer side 6-Way are normally wired. On a 6-Way the 12 volt power wire could be attached to the center pin or the pin in the 10 o'clock or 2 o'clock position (depending on which side you are looking at). I assume the 6-Way you are installing is going on the front of the F-150. All you need to do is figure out which pin on the tow vehicle and/or wiring harness from the tow vehicle to the...
    view full answer...
    Image 1 for
  • 5-pole Adapter to Convert 2018 Ford F-150 4-Pole Wiring for Lance 650 Truck Camper
    If I have it right you want to add a reverse light circuit to your 4-pole wiring for your Lance truck camper. If you have a 4-pole now and you just want to add another circuit and a 5-pole connector for the camper's reverse lights you can use a 4-pole to 5-pole adapter kit # 20036. This gives you a 5-pole connector and the extra wire to splice into the reverse light wiring on the truck. We don't have 5-pole kits that are plug-in. If I have it wrong please let me know and I'll get you...
    view full answer...
  • Will the Hopkins Custom Tail Light Wiring Kit for Towed Vehicles Fit a 2018 Ford F-150 Raptor
    Yes, the Hopkins Custom Tail Light Wiring Kit for Towed Vehicles part # HM56009 is a fit for a 2018 Ford F-150 Raptor.
    view full answer...
  • Will the Hopkins Custom Tail Light Wiring Kit for Towed Vehicles Fit a 2018 Ford F-150 Raptor
    Yes, the Hopkins Custom Tail Light Wiring Kit for Towed Vehicles part # HM56009 is a fit for a 2018 Ford F-150 Raptor.
    view full answer...
  • Will HM56200 Wiring Harness Affect Operation of Taillights When Not Flat Towing
    The # HM56200 is a fit for 2007-2018 Jeep Wrangler JK and Jeep Wrangler Unlimited JK models, and is NOT a fit for a 2020 Ford F-150.. For your 2020 F-150, you'll want to use # HM56009. The Hopkins flat tow vehicle wiring harness, part # HM56009 is designed to T into the connection between the vehicle taillight harness and the taillight assemblies. The function of the vehicle's taillights will remain unaffected when you're not flat towing, the taillights will work just the same and shine...
    view full answer...
  • Wiring Harness to Flat Tow a 2015 Ford F-150 EcoBoost Behind a Motor Home
    Hopkins shows tail light wiring kit for towed vehicles # HM56009 as the correct option for your 2015 Ford F-150 EcoBoost. There isn't any other plug and play type of harness available for your F-150. I have included a link to a video review of this harness for you. There is a 4-Way flat on the end and since most RVs have a 7-Way connector you could use kit # HM47044 and replace the 4-Way flat with the included 4-Way round.
    view full answer...
  • Troubleshooting Running Light Circuit of Hopkins 56009 Tow Bar Wiring Not Working 2017 Ford Raptor
    Use a circuit tester like part # PTW2993 to test the green and yellow wire from the gray connectors for voltage when connected to a tow vehicle and the running lights on. If that circuit is active next check the green and yellow wire on the other side of the converter. If there's no voltage there then the issue is a bad converter box. If there wasn't voltage on the input side the issue is most like on the vehicle or the connectors. Try unplugging and replugging the gray connectors in as...
    view full answer...
  • Recommended Flat-Tow Wiring Harness for a 2017 Nissan Murano Towed On Dolly
    The Hopkins Custom Tail Light Wiring Kit for Towed Vehicles isn't offered for a 2017 Nissan Murano but we do still have options for you such as the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit part # RM-15267 which is what I recommend. This is the most popular option for a flat-tow wiring harness by far. It's easy to install and super durable but there are no plug-in-play options available.
    view full answer...
  • No Splice Tail Light Wiring Harness Compatible with 2020 Ford F-150
    Yes. The Hopkins Custom Tail Light Wiring Kit for Towed Vehicles # HM56009 is confirmed to fit a 2020 Ford F-150. It simply plugs into your factory wiring connections at your tail lights and is run to the front of your vehicle for connection to your towing vehicle. You will however also need the # RM-88400 relay to prevent the towed vehicle's brake signal from overriding the turn signal from the RV when applying the brakes during a turn. I've attached a video of each installation to assist.
    view full answer...
  • Flat Tow Wiring Harness for 2019 Ford F-350 Super Duty
    There is a flat towing wiring harness for your 2019 Ford F-350 Super Duty, but the Hopkins one you mentioned is not a fit; it is only a fit for certain model year F-150's. There are no plug-in harnesses for your F-350 so I recommend a simple splice-in harness instead, the Roadmaster Universal Hy-Power Diode Wiring Kit # RM-154.
    view full answer...
  • Tail Light Wiring Kit for 2021 For F-150
    The Hopkins Custom Tail Light Wiring Kit for Towed Vehicles, # HM56009 is not a confirmed fit for a 2021 model Ford F-150. For your vehicle I suggest the Tow Ready Tail Light Isolating Diode System with 4-Pole Connector # TR118821.
    view full answer...
  • Is A Brake Light Relay Kit Needed For A 2018 Ford F-150 When Flat Towing With A Braking System
    Yes, because this harness wires your Ford F-150 as a combined system you will need the Roadmaster Brake-Lite Relay Kit for Towed Vehicles # RM-88400 while flat towing your 2018 Ford F-150 with the Hopkins Custom Tail Light Wiring Kit for Towed Vehicles # HM56009. This will prevent the brake signal from your F-150 from overriding the turn signal sent by your RV when you slow down to make turns. The color of your brake light switch wire is purple/white. I've attached some videos to help...
    view full answer...
  • Recommended Wiring To Tow My 2022 Hyundai Santa Fe On A Tow Dolly
    When it comes to flat towing your 2022 Hyundai on a tow dolly, most of the trailer wiring is already included with the dolly. The Demco Kar Kaddy SS Tow Dolly with Disc Brakes - Foldable - 4,800 pounds # DM9713045 has a full LED DOT lighting package which includes brake, tail, and turn signal lights So you will not need the lights working on your Santa Fe. It also has the front fender marker lights, and the license plate marker lights and has a 4-flat trailer connector. Your RV will either...
    view full answer...
  • Wiring Needed to Flat Tow 2016 Ford F-150
    For wiring to flat tow your 2016 Ford F-150 I recommend the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit # RM-15267 and you are also going to need Roadmaster Brake-Lite Relay Kit for Towed Vehicles # RM-88400. If you take a look at the two videos I have linked, they will show you both of these parts being installed on a 2016 F-150 so you can see the exact process you'll need to follow.
    view full answer...
  • Flat Towing Lighting Harness Recommendation for 2015 Ford F-150
    The wiring is different on vehicles that have trailer wiring and ones that do not come with it at all. We see this on other vehicles that will have connections made under the hood and pre-wiring ran to back of some vehicles and on others all of that isn't there at all. In your situation there is a different style of connector than what the part # HM56009 is compatible with. Your truck has a standard round connector since you have the tow package with a factory 7-way. For lighting you...
    view full answer...


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Info for this part was:

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Adam R
Employee Lindsey S
Edited by:
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