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Hopkins Custom Tail Light Wiring Kit for Towed Vehicles

Hopkins Custom Tail Light Wiring Kit for Towed Vehicles

Item # HM56000
Our Price: $74.34
You Save: 27%
Tow Bar Wiring

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Shipping Weight: 1.61 lbs
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Hopkins Plugs into Vehicle Wiring - HM56000
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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. Great Prices for the best tow bar wiring from Hopkins. Hopkins Custom Tail Light Wiring Kit for Towed Vehicles part number HM56000 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (46)
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Hopkins Tow Bar Wiring - HM56000

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


  • 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 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 - (HM48235 - 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 (HM48235 - 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.

11156000 Hopkins Plug-In Simple Dinghy Towing Harness

Replaces 56000

This Product Fits The Following Vehicles

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Hopkins Custom Tail Light Wiring Kit for Towed Vehicles - HM56000

Average Customer Rating:  4.8 out of 5 stars   (46 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.


Great wiring kit. Everything fit and worked perfectly on my 2013



Still working perfectly. A quality wiring harness. It helped to have the truck on a lift.


Big job, completed in 4 hours by myself. Not bad for a person 81 years old. Once again great instructions.

Ford F-150

With the Hopkins HM56000 I was able to easily wire my Ford F150 for towing behind our motorhome in no time at all. I read the instructions and watched and install video and it went in per instructions with no problems at all. I have used it a number of times since install and lights were great! Good price, easy install and it works!

Randall H.


one year later and still works great! Follow the instruction, no short cuts and no problem.


If you have the option to use one of these custom fit kits for your trailer or tow vehicle wiring or both, don't hesitate to purchase. These kits make wiring a snap and both can be used in series if necessary without cutting or splicing any factory wire. I used this in comping with a T One kit for my Trailer hitch vehicle with no issues.


I was ready to switch to a more permanent lighting system since we plan to keep the 2009 Ford Escape for awhile. This harness is designed specifically for the Escape and was pretty easy to install after watching a video provided by etrailer. My only challenge was converting the 4 pin connector to the 6 pin that was previously installed on the Escape. The wiring diagram provided by etrailer made that easy as well. I am slow and inexperienced, so it took me about 4 hours. I did not find the double sided piece of tape that was supposed to be provided, so I made use of some strong velcro.

Ford Escape

Plug and Play!
No issues installing
this harness. It only requires two connection points, one at each tail light. The connectors fit perfectly. The only challenge is routing the wiring forward under the body, but that's not the vendor's problem. On my Ford Escape I chose to route the wiring forward on the driver's side to avoid all the exhaust components rather than on the passenger's side as recommended in the instructions.

Minor gripe - the double sided tape necessary to attach the diode pack to the body was missing from the kit. Fortunately, I had some on hand, but it would have been irritating if I hadn't.


Painless installation

Ford F-150

I purchased the light wiring kit so I could tow my F150. The how to video was spot on and the install was easy for me.


We are out of state and when we entered a different shipping address, we received a phone call on our home phone to confirm that this order was legitimate. We really appreciate that extra layer of security provided by etrailer.

Will be installing the wiring kit today. Thx!!


Try to make the most direct route from tail light to tail light. My first wire route from tail light to tail light the wire came up short. I had to make a more direct route for it to reach, but it did the second time.


To whom it may concern,
I must compliment
Jennifer S. for her professionalism, knowledge and diligence, explaining the product and finally shipping on time. If the product is half as good as the service I received. We will let you know how the product works after instillation.


David Cohen


Have had no problems with the Hopkins wiring I purchased last here. Instillation was quick and simple. Worked great out of the gate.

2008 Ford Edge

Did not say excellent because of installation. Not as described in instructions. Had to improvise.
Haven’t towed vehicle yet, so not sure if it works properly.


Finally a product that was super easy to install (we are seniors and did the installation in no time at all). Sorry I can not send pictures but did not have a camera available. Thank you for the fast and efficient delivery of your product.

2012 Ford F-150

The wiring harness fit the plugs on my truck well ,it was simple to install.

2013 Ford F-150

The wiring kit fit my Ford F 150 perfectly no cutting or splicing wires.


great product, very easy installation. I installed everything myself in just a few hours.

2015 Ford F-150

Works great, but I will not take pictures because you can't see the product after installation.


Great described. Great instructions & easy to install. Also customer service was very helpful & provided me with excellent service. Would recommend to my friends.

2010 Ford Escape

Easy installation, looks good on the ca r.


Easy installation. Working well.


Easy to install

Kenneth T.


Works great

2013 Ford F-150

Great Product, Good Price and was very easy to install

2013 Ford F-150

Product was as described , easy to install, works great,


great job fast delivery, very impressed. have not installed. will let know.thanks

Show More Reviews

See what our Experts say about this Hopkins Tow Bar Wiring

  • How to Pick Out Tow Bar Wiring for Flat Towing
    What you are looking for is called tow bar wiring. Wiring your towed vehicle (or dinghy) can be a complicated process. Depending on the wiring method you've chosen, you may have to splice into your car's wiring, drill into your tail light housings or run wiring beneath your car. Because each towed vehicle is different, and each RV (or tow vehicle) is different, it can be somewhat difficult to determine what all you may need for your towing setup. For that reason we created an FAQ article...
    view full answer...
  • Can Hopkins Custom Tail Light Wiring Kit for Towed Vehicles HM56000 Operate in Both Directions
    Hopkins Custom Tail Light Wiring Kit for Towed Vehicles # HM56000 is directional; it cannot function in both directions. It can only take in the combined RV lighting signals and separate them for the towed vehicle's separate lighting. The custom connectors and pigtails are not available separately.
    view full answer...
  • Tail Light Wiring Differences Between the 2008 Ford Edge and the 2011-2013 Ford Edge
    The Ford Edge went through a style change in 2011 and one of the changes involved the tail lights. The earlier generation Edge, including the 2008 models, used a combined wiring system. This means that the same bulb and circuit was used for the turn signal and the brake light. In 2011, the Edge was changed to a separate wiring system. There are separate bulbs for the turn signal and brake lights which means there are separate circuits for the turn signals and brake lights. These wiring...
    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...
  • Tow Bar Wiring Harness Recommendation For 2012 Ford F-150 With EcoBoost
    We do have the wiring kit you need for your 2012 Ford F-150. I recommend the Hopkins Custom Tail Light Wiring Kit, part # HM56000. This plugs into your F-150 wiring behind the tail lights and plugs into the RV. This will not affect the electrical system of your F-150 when not flat-towing. I also recommend an extension like part # HM48235. This extension is used to connect the F-150 to the RV. There are 5 items needed when you are flat-towing. You need base plates, a tow bar, safety...
    view full answer...
  • Tow Bar Lighting Recommendation for 1997 Jeep Wrangler Sport
    Since there are no plug and play tow bar lighting solutions for your 1997 Jeep Wrangler like the Hopkins you mentioned your best option would be a diode kit like the Roadmaster part # RM-15247 which wires into your vehicle taillights and gives you a way to control them from the tow vehicle. The Hopkins kit was designed to fit a different vehicle.
    view full answer...
  • Where Does Roadmaster Brake Lite Relay # RM-88400 Install
    I attached a diagram that shows where all of the connections of the Brake Lite Relay part # RM-88400 need to be made. Basically the 85 pin gets grounded, 87 gets ran to brake light switch and signal output, 86 runs to a fuse tap, and 30 runs to the brake light wire. I also attached an install video for this kit for you to check out as well. Here's an instructions overview for more info. Remove the blue wire from the kit. This wire is not needed for normally open applications. Locate...
    view full answer...
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  • Brake Light Relay Recommendation for a 2014 Ford F150 Being Flat Towed
    The only way I can safely recommend you install the Roadmaster Brake Light Relay part # RM-88400 in your 2014 Ford F150 is according to the installation instructions. Don't worry, if you follow the instructions and install the relay correctly your F150 would be just fine. I attached an install video for you to check out.
    view full answer...
  • Tow Bar Wiring Recommendation for a 2014 Ford F-150
    We have exactly what you will need. First you will want the Hopkins Tow Bar Wiring part # HM56000. This will plug in line with your trucks taillights circuits to control them while being flat towed. This harness has a 4-way connector that can easily be converted to a 7-way with a # 47345. You will just need to plug the adapter into the 7-way socket on your tow vehicle and then plug the # HM56000 into it.
    view full answer...
  • Troubleshooting Tail Light Wiring Kit on 2014 Ford F-150
    Since you know you have a good ground what you need to do is use a circuit tester such as # PTW2993 and test harness # HM56000 individually for function when not connected to your truck. Doing this will let you know if there is an issue with the converter or not; if there is an issue then you have a faulty converter and you will need a replacement. This is uncommon but happens on rare occasion.
    view full answer...
  • Flat Towing Wiring Options for 2014 Ford F-150 Platinum
    Strictly speaking, both you and your friend are correct. It just depends on which type of toad wiring harness is used. The link at right will show you all flat-towing wiring kits for the 2014 Ford F-150 Platinum. These include a custom-fit option from Hopkins, part # HM56000. This kit installs without cutting and splicing by plugging in to the F-150 tail lights and includes integrated diodes to prevent feedback. This operates as a combined lighting system.
    view full answer...
  • Can Trailer Wiring Function be Tested without Trailer Connected
    You can definetely test the pins of your trailer connector for correct voltage without a trailer connected. If you check out the video I attached you can see how this is done with a similar 4-way connection. Another option you have would be an emulator tester like the part # 6562 which would plug right into your 7-way (if that's what you have) and with it's light displays for each circuit you'll know if all of the circuits are active.
    view full answer...
  • Tow Bar Wiring/Lighting Kit Recommendation for a 2014 Ford F-150
    Roadmaster, the manufacturer of a diode kit that has been confirmed to fit your 2014 Ford F-150 says that their kit part # RM-154 has been confirmed as a fit for your vehicle. However, we have an even easier to install wiring kit that you may also be interested in. The Hopkins Tow Bar wiring kit part # HM56000. This kit plugs in line with your taillight wiring harness and operates the taillights like a diode kit. Its a very easy install, check out the install video I attached that shows...
    view full answer...
  • Parts Recommendation to Convert a 4-Way on a 2002 Toyota 4Runner to a 7-Way
    You are going to need two things before you can tow your new trailer and I would recommend you install them before you head down there. First, to convert the 4-way of your 2002 4Runner to a 7-way and allow you to install a brake controller you will want the Universal Installation Kit for Trailer Brake Controller # ETBC7. I attached an install video and installation instructions for you to check out as well. For a brake controller I would recommend the Prodigy P2 Brake Controller part...
    view full answer...
  • Adapting a 7-Way Trailer Connector on an RV to a 4-Way Flat on a Towed Vehicle
    If the coach uses the 7-Way RV style connector with blade style pins then you can use coiled adapter, # HM47065, with the Hopkins Custom Tail Light Wiring Kit, # HM56000, or similar tow bar wiring that has a 4-Way flat end. If the coach has a 7-Way round pin connector then you can use an adapter such as # 47405. But you will likely need a 4-Way extension, # HM47115, to reach from the front of the vehicle to the coach. If your coach has a 6-Way round pin connector then you would use an...
    view full answer...
  • Tow Bar Wiring Kit for 2021 Jeep Gladiator that is Flat Towed
    For your 2021 Jeep Gladiator there aren't any custom fit tow bar wiring kits available so you'd have to go with a diode type kit like the part # RM-152-98146-7 which we've had the chance to install on a 2020 Jeep Gladiator and made an install video for which you can use as an install guide to walk you through the process.
    view full answer...
  • Plug And Play Taillight Wiring Harness For Flat Towing A 2021 Ford F-150
    To avoid splicing into your 2021 Ford F-150's wiring I recommend the Demco Wireless LED Light Bar for Towed Vehicles # DM36MV. This will allow you to simply plug into your RV and suction cup/strap down the tow lights to your vehicle and go. I recommend using some Dielectric Grease for Electrical Connectors, 2 oz. Item # 11755 on the 4 pole connectors to prevent corrosion.
    view full answer...
  • Diode Wiring Kit For Flat Towing A 2022 Ford F-150
    We don't currently offer the Hopkins 56012 wire harness so you would need to purchase it through Hopkins or you could use the Roadmaster # RM38FR (LED tail lights) or # RM26FR (Incandescent tail lights) instead.
    view full answer...
  • After Installing Tow Bar Wiring Harness HM56000 on 2008 Ford Edge Brake Lights Do Not Work
    You will want to unplug the 2008 Ford Edge from the motor home and use a circuit tester, such as # PTW2993 if you don't have one, to test the motor home side trailer connector. First test it without the adapter plugged into the 7-Way. Have someone sit in the motor home and go through the light functions while you test with the circuit tester. If the brake light signal is not coming through, then there is likely a blown tow package wiring fuse or wiring issue on the motor home you will...
    view full answer...
  • Parts Needed to Flat Tow 2014 Ford F-150 SVT Raptor
    To flat tow your 2014 Ford F-150 SVT Raptor, you will need base plates, a tow bar, wiring, safety cables, and a supplemental braking system. For the base plate for your SVT Raptor, I recommend the Blue Ox Base Plate Kit with Removable Arms # BX2630. These base plates feature hidden reinforcements, meaning that less of the bracket will show, and the removable arms help keep a clean look for the truck when not being towed. The tow hook will need to be removed to install these base plates...
    view full answer...
  • What Light Wiring Kit Fits to My Dodge Dakota Quad Cab 2001 to Flat-Tow it
    The Hopkins Magnetic Tow Lights # C6304 will fit your 2001 Dodge Dakota. I recommend this light kit because it is very simple to use, it connects to your RV for power. The lights are magnetic and sit on your Dakota making them a great temporary lighting kit. If you need a base plate to flat tow your 2001 Dodge Dakota, I recommend the Roadmaster Direct-Connect Base Plate Kit - Removable Arms # 266-3. I recommend this base plate because the arms are removable when not in use. You will also...
    view full answer...
  • Flat Towing Setup Recommendation for a 2014 Ford F-150 STX-4x4
    I checked with Roadmaster and the part # 495-1A that you referenced has been confirmed to fit your 2014 Ford F-150 STX so it would work well for you. The InvisiBrake part # RM-8700 that you referenced has also been confirmed to fit your vehicle. There is a Hopkins wiring harness that will fit your vehicle, but the # HM56005 that you referenced would not fit your truck. Instead you would want the # HM56000. The Falcon Tow Bar part # RM-522 that you already have would work great as well. For...
    view full answer...
  • Parts Needed to Flat Tow a 2013 Ford F-150 4x4
    The first thing you will want to do is consult the owners manual for your 2013 Ford F-150 for specific information on flat towing it. You will need 5 basic components to flat tow a vehicle: base plates, tow bar, safety cables, lighting, and supplemental braking. For base plates on the truck I recommend the Demco kit # DM9518296. I've attached a picture that shows how they'll look once installed. For a compatible tow bar you can use the Dominator # DM9511008 which is rated for 7,500...
    view full answer...
    Image 1 for
  • Tow Bar Wiring For 2014 Ford F-150 SVT Raptor
    For flat towing your 2014 Ford F-150 SVT Raptor, the easiest wiring kit to install is the Hopkins Custom Tail Light Wiring Kit # HM56000. This kit will plug into your vehicle's existing wiring at the taillights. I have attached an installation video of this wiring on a 2014 F-150 for you. If your RV has a 7-way connector, I recommend using the Blue Ox 7-wire to 6-wire, Coiled Electrical Cord # BX88206. Extensions help to connect the wiring from a tow vehicle to a towed vehicle. Since...
    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
Employee Dustin K
Video by:
Dustin K
Employee Zach D
Video by:
Zach D
Employee Lindsey S
Written by:
Lindsey S
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Joshua S
Video Edited:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Cole B
Installed by:
Cole B
Employee Bradley B
Installed by:
Bradley B
Employee Shane T
Test Fit:
Shane T
Employee Randy B
Test Fit:
Randy B
Employee David F
Test Fit:
David F
Employee Ryan G
Test Fit:
Ryan G
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Updated by:
Alexander C

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