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Hopkins Custom Tail Light Wiring Kit for Towed Vehicles

Hopkins Custom Tail Light Wiring Kit for Towed Vehicles

Item # HM56202
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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. Lowest Prices for the best tow bar wiring from Hopkins. Hopkins Custom Tail Light Wiring Kit for Towed Vehicles part number HM56202 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (83)
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Hopkins Tow Bar Wiring - HM56202

  • 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.


  • 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.

11156202 Hopkins Plug-In Simple Dinghy Towing Harness

Replaces 56201 and 56202

Installation Details HM56202 Installation instructions

This Product Fits The Following Vehicles

California residents: click here

Customer Reviews

Hopkins Custom Tail Light Wiring Kit for Towed Vehicles - HM56202

Average Customer Rating:  4.7 out of 5 stars   (83 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.


Excellent product with outstanding price. Easily installed. I highly recommend this wiring harness . It has been installed and has worked well for over one year.


Product was delivered within 4 days. Put base plate on same day wiring the next day. Perfect fit. Stacey was very knowledgeable and helpful. Great job. I will use etrailer for all my accessories and parts.

2003 Jeep Wrangler

From an installation perspective it is plug-and-play and is relatively easy to install. However, the first one I received was defective. There was a problem with the diode pack. The defect caused both lights in the towed vehicle to flash when applying the right signal in the towing vehicle. Kudos to the folks at eTrailer for sending another quickly. I tested the replacement and all functions worked with only one seemingly minor observation, with running lights on either side signal causes a slight dimming pulsation in the other, not-blinking tail light. It shouldn’t be enough to confuse other drivers of your intention. Having to install the harness twice was a huge pain.
My 2003 wrangler brake light function is active with ignition off. This means that the brake lights overrode signals. I with the product info alerted me to this problem. I now need to disable the brake lights in my Jeep when in tow mode. This is probably a common issue. I ordered a relay but have not installed it yet. Having to reinstall the harness again I feel rushed so the relay will have to wait and in the mean time I will pull the fuse when towing.

2006 Jeep Wrangler

The parts fit fine, had to use a [online videos] video by etrailer to help because written instructions were not detailed enough.Everything plugged into factory light connections


Easy plug and play. I cut the 4pin connector off and wired a 6 pin socket with battery caharge line to be compatible with my tow vehicle and other TOADS

2001 Jeep Wrangler

Easy to install ! About an hour! Used some split flexible wire protection ( not included with purchase) Would recommend a 5ft 4 pole flat trailer connector extension when using a tow bar!


This wiring kit worked perfect for wiring our towed vehicle to our motorhome.

2006 Jeep TJ

The telephone support was excellent. I can't rate the product since it hasn't been installed yet.


Just finished installing the light kit on my 2005 Wrangler TJ Sport. Everything went as expected. The installation video helped a great deal. The written instructions that came with the kit were incorrect for my year vehicle but the video was right on.
The lights work fine when hooked up to the motorhome and when unhooked.
Great product, plugged right in.

2000 Jeep Wrangler

Everything necessary for the installation was included and in excellent condition, Top notch review and self help videos!


sales person was very knowledgeable and helpful


This wire harness was a snap to install and works great on my towed vehicle. The instructions were clear and made the install quick and easy.


We installed the wiring harness and never could get it to work so now we use magnetic lights. It was labor intense too install and a little gun shy to re-order the same product. I am a mechanic and was very disappointed in the light unit.
Thanks, kinda nice to vent!


I think someone needs to read the directions for this product. I can figure out how to install it, but the directions dont make sense.


Wish I had known about these ready-made wiring kits earlier.

2001 Jeep Wrangler

This wiring harness was exactly what I was looking for so that I could tow my jeep behind my RV. No cutting, just plug and play (er I mean tow). There was plenty of extra wiring at the front end so that I could route through the engine bay and mount under the front bumper so it was out of site but easily accessible. Worked perfectly!


This is a great kit. I used a fish tape to pull the wire through the frame to the front of the Jeep and had it all working in an hour.


Very easy install with great instructions. Have been using this for about a year now with no problems at all.

2004 Jeep Wrangler

This was a breeze to install!! About 30 min and I had working lights on my Jeep and was ready to hook it up behind my motorhome. Price was great too. Stopped at my local RV dealer and he said he could get me a wiring kit for $250! Saw this one online for $50 bucks and took a chance. Sure glad I did! Disconnect a couple of plugs, plug in new harness, route the wires to the front and BOOM! Ready for the trip! Thanks guys!


I just finished installing this harness on my 2003 Wrangler. As any wiring on a Jeep, it was uncomfortable and tight to access the wiring. This is normal. The installation sheet instructions were inaccurate for my model, I have a career in automotive, so it was no problem for me. I installed this for flat towing of my Jeep. I ran the harness over the fuel tank and down the drivers side undercarriage, that is where the main harness and brake lines run.

2001 Jeep TJ

I received the two items I order very quickly. Great updates from the seller and the shipper. Poor weather today and unable to install the wiring harness. But, given the way the company performed, I believe I will have no problems. Very happy with etrailer.

2004 Jeep Wrangler

Good product. Install directions should include which plug in at each taillight should be used if you already have trailer hitch plug in wiring installed. Had to go to Youtube and find a video that talked about the correct colored wire you should connect to. Other than that, install went well.


easy install great product!

1999 Jeep TJ

After one year on the vehicle and also installing new LED lights, the wiring kit is still working. I love not having to add extra lights for towing.


Easy to install and works great.

Show More Reviews

Ask the Experts about this Hopkins Tow Bar Wiring

  • With Hopkins Tow Bar Wiring Plugged In 1998 Jeep Wrangler Right Turn Signal Does Not Work
    To determine where the problem is I ask you to disconnect the Hopkins harness # HM56202 from the passenger's side and plug the vehicle tail light wiring in like normal. If the right turn signal still does not work then the bulb could have blown or a fuse may need to be replaced. If it does work then check the connectors on the Hopkins harness to see if there are any broken or bent pins or any corrosion anywhere on its or the vehicle's connectors. If that is not the issue then there is...
    view full answer...
  • Installing 4-Way Trailer Connector on 2006 Jeep TJ that is Already Wired to be Flat Towed
    To install a 4-way trailer connetor on the back of your 2006 Jeep TJ you can use the Tekonsha Wiring Harness # 118409. This plugs into the existing wiring on your Jeep under the rear bumper on both sides.
    view full answer...
  • Does Hopkins Tow Bar Wiring Kit for 2004 Jeep Wrangler Require Additional Diodes
    Installing the Hopkins kit part # HM56202 in your 2004 Jeep Wrangler TJ would not require you to also install diodes. The Trailermate tow bar wiring kits are notorious for needing additional diodes installed in them but the Hopkins kits do not have that same issue.
    view full answer...
  • Does Hopkins Tow Bar Lighting Kit # HM56202 Fit 2004 Jeep Wrangler Taillights
    The Hopkins Custom Tail Light Wiring Kit # HM56202 that you referenced was designed to fit your 2004 Jeep Wrangler's taillight configuration of separate turn signals from stop signals so it will fit and function really well. It combines the circuits onto one combined circuit.
    view full answer...
  • Troubleshooting Lighting Issues When Flat Towing A 2017 Jeep Wrangler Unlimited
    When it comes to wiring the first thing to check for is any shorts or bends in the wiring. If your wiring harness for your lights uses a converter like the Hopkins Custom Tail Light Wiring Kit for Towed Vehicles # HM56202 it could be malfunctioning and not correctly sending signals. I've attached a video for testing the converter box and our help guide on wiring troubleshooting. If this doesn't solve your issue please reply back with the wiring you're using to connect from the RV and...
    view full answer...
  • Best Tow Bar Lighting Option for a 2003 Jeep Wrangler
    The best tow bar lighting solution we offer for your 2003 Jeep Wrangler is going to be the Hopkins kit part # HM56202 that has been confirmed as a fit for your 2003 Jeep Wrangler. This kit was custom made to fit your vehicle and will not require any hardwiring or drilling of the light assemblies to install. I also attached a help article on picking out tow bar lighting as well. The HM56200 that you referenced would not be your best option as it has not been confirmed as a fit.
    view full answer...
  • Troubleshooting Turn Signals and Brake Lights Dimming When Headlights Turn on During Flat Towing
    The issues you're seeing won't be caused by not adding a relay to the wiring when you installed the # HM56202 and Brake Buddy Stealth # HM39530 and since you've already checked all of your ground wires I recommend moving on the the # HM56202 itself. If you can test the voltage going in to the converter box and coming out and see if that's where the power is being lost; this might indicate something amiss with the converter box. If you can check the voltage there and let me know what you...
    view full answer...
  • Will The Hopkins Custom Tail Light Wiring Kit Work With Aftermarket LED Lights?
    As long as the connectors your LED lights use on your 2011 Jeep Wrangler Unlimited is compatible with the factory wiring harness, then the Hopkins Custom Tail Light Wiring Kit for Towed Vehicles # HM56200 will work just fine for you. I have included an installation video of # HM56200 on a 2014 Jeep Wrangler Unlimited for you to check out as well.
    view full answer...
  • Trailer Wiring Harness Recommendation for a 2010 Volkswagen Jetta
    The Hopkins wiring harness # HM56202 replaced the older 56201 that you mentioned. That being said these harnesses are for Jeep Wranglers and would not be what you would need for your 2010 Jetta. Instead you would want the Tow Ready Harness part # 118667 which is a confirmed fit for your Jetta.
    view full answer...
  • Wiring for Flat Towing 2006 Jeep Wrangler
    I assume you would like to flat tow your 2006 Jeep Wrangler and have 4-Pole Flat Trailer Connector # 32625. If this is the case you can use Hopkins Custom Tail Light Wiring Kit for Towed Vehicles # HM56202; the Hopkins kit for towed vehicles plugs into your Jeep's tail light housing assemblies while the connector plugs in behind the rear tire mud flap on the driver's side.
    view full answer...
  • How Does The Hopkins Custom Tail Light Wiring Kit For Towed Vehicles Plug Into My 1998 Jeep Wrangler
    In order for this wiring harness to be installed correctly, you will have to unplug the brake wires on your 1998 Jeep Wrangler. Your wiring harness, the Hopkins Custom Tail Light Wiring Kit for Towed Vehicles, part # HM56202, should have two plugs per each tail light. You will be plugging on end of your wiring harness into one end of your plugs. The next plug from your wiring harness should plug into the leftover plug. Once that is done, you will repeat the process for the other tail light. I...
    view full answer...
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  • Recommended Flat-Tow Wiring Harness for a 2000 Jeep Wrangler
    I do have a plug-in flat tow wiring harness available for your 2000 Jeep Wrangler but the Hopkins Custom Tail Light Wiring Kit for Towed Vehicles part # HM56200 that you referenced is not correct. Instead, you will want to use the Hopkins Custom Tail Light Wiring Kit for Towed Vehicles part # HM56202 which is a confirmed fit for your 2000 Jeep Wrangler. This harness like the above is a plug and play option that will not require any splicing. I have attached a review video of the harness...
    view full answer...
  • Compatible Hopkins Manufacturing Custom Tail Light Wiring Kit For A 2004 Jeep TJ
    The Hopkins Custom Tail Light Wiring Kit for Towed Vehicles # HM56202 is a confirmed fit for your 2004 TJ. If you received either the # HM56203 or # HM56303 then you will want to return those as they are a fit for a 2002 - 2007 Jeep Liberty (HM56203) and for a 2008 - 2010 Saturn Vue (HM56303).
    view full answer...
  • Recommended Flat Towing Wiring Harness For 2003 Jeep TJ With Stay-IN-Play DUO Supplemental Braking
    Yes. You can use the Hopkins Custom Tail Light Wiring Kit # HM56202 on your 2003 Jeep TJ Wrangler that has the Demco SBS Stay-IN-Play DUO Supplemental Braking System # SM99251. I've linked an installation video of the Hopkins kit on a similar TJ that you can refer to during the installation.
    view full answer...
  • Tow Bar Lighting that Fits 2004 Jeep TJ Wrangler
    For custom fit tow bar lighting that fits your 2004 Jeep TJ Wrangler we have the Hopkins part # HM56202 as a confirmed fit. Curt has trailer wiring but trailer wiring can't be used in reverse for tow bar lighting. I attached an install video for this on a 2004 Jeep Wrangler for you to check out as well.
    view full answer...
  • Troubleshooting Jeep Lights Not Working with Flat Tow Harness
    Since your Jeep lights work normally when it is not connected to your RV your harness # HM56202 is probably connected properly. I suggest you test the motorhome connector to confirm that the correct lighting signals are present there. You can use a circuit tester like # PTW2992 on the contacts while a helper activates the brake, turn and running lights on the coach. Please refer to the linked article on wiring to see which contacts handle which signals on the various types of RV connectors. If...
    view full answer...
  • Why Will the Hopkins Tail Light Wiring Kit HM56202 Not Work on a 1997 Jeep Wrangler TJ
    The Hopkins Custom Tail Light Wiring Kit for Towed Vehicles part # HM56202 will not work on your 1997 Jeep Wrangler TJ because Jeep changed the pinouts on the tail lights between the 1997 and 1998 model years. Therefore, it will plug into the connectors behind the tail light housing but will not function properly. There is not another plug and play flat-tow wiring harness for your Jeep so I recommend using the Roadmaster Tail Light Wiring Kit with Bulbs part # RM-155 as it will not require...
    view full answer...
  • Recommended Tow Bar Wiring For 2006 Jeep TJ
    The wiring harness that is designed for your 2006 Jeep TJ that plugs into the motorhome is part # HM56202. This plugs directly into the Jeep wiring behind the tail lights and includes the wiring with a 4-way trailer connector that will be run to the front of your Jeep. When you are towing your Jeep and you are using a supplemental brake system as required, you will need a brake light replay like part # RM-88400. I have attached a helpful article that explains what is needed when flat-towing...
    view full answer...
  • How To Determine if Vehicle Needs Brake Light Relay when Installing Tow Bar Lighting Kit HM56202
    Most likely yes, but here's how you check to find out if you need the Brake Light Relay part # RM-88400 with the Hopkins tow bar lighting kit part # HM56202. With your vehicle key in the off position press the brake pedal. If the brake lights come on then you need the relay. If not you don't need it.
    view full answer...
  • Installation of Hopkins Custom Tail Light Wiring Kit for Towed Vehicles HM56202
    Hopkins harness # HM56202 for towed vehicles like your 2006 Jeep Wrangler Rubicon installs at the tail light assemblies using the included custom-fit connectors. The connectors/wiring with a yellow wire attach at the driver's side light. The connectors/wiring with the green wire install at the passenger side tail light assembly. The only other wire to be connected is the white ground wire with ring terminal. This connects using the include self-tapping screw to a clean bare metal surface...
    view full answer...
  • Is There a Plug And Play Flat-Tow Harness for a 2006 Jeep Wrangler
    Yes, the Hopkins Custom Tail Light Wiring Kit for Towed Vehicles part # HM56202 is a fit for a 2006 Jeep Wrangler and offers a plug-n-play solution so no splicing into wires is required for you to activate the tail lights on the towed vehicle from the tow vehicle.
    view full answer...
  • Can Hopkins HM56202 be Wired into 6-Way Connector on Front of Towed Vehicle
    Absolutely! We actually recommend doing this exact install a lot of the time. Using a 6-way, like part # PK12720 for an example, at the vehicle's front allows you to install additional wiring for a braking system or charge line but doing it this way makes it an easier install because the Hopkins # HM56202 is the easiest to install harness for your 2004 Jeep.
    view full answer...
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  • Tail Light Wiring Kit for Towed 2021 Jeep Wrangler
    The Hopkins Custom Tail Light Wiring Kit for Towed Vehicles, # HM56202, is not a confirmed fit for the 2021 Jeep Wrangler. I suggest instead the Roadmaster Universal Hy-Power Diode Wiring Kit, # RM-154 as this is a confirmed fit for all trim levels of the 2021 Jeep Wrangler; we even have a step-by-step installation video created of this being installed on a 2020 Jeep.
    view full answer...
  • Hopkins or Roadmaster Tow Bar Wiring For 2004 Jeep TJ
    For your 2004 Jeep TJ, between the Roadmaster # RM-154 and the Hopkins # HM56202, the better tow bar wiring option is absolutely the Hopkins kit: - Hopkins Custom Tail Light Wiring Kit for Towed Vehicles # HM56202 What makes the Hopkins kit the better option between the two is the installation. While the Roadmaster will have you splicing into your Jeep's wiring, the Hopkins kit allows you to simply plug the connectors into your tail lights. The Hopkins is also a diode kit like the Roadmaster...
    view full answer...

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Info for this part was:

Employee Leah B
Edited by:
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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 Jeff D
Installed by:
Jeff D
Employee Dustin K
Video Edited:
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Employee Wilson B
Updated by:
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Employee Alexander C
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Test Fit:
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