Hopkins Custom Tail Light Wiring Kit for Towed Vehicles

Hopkins Custom Tail Light Wiring Kit for Towed Vehicles

Item # HM56301

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Tow Bar Wiring

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Hopkins Tail Light Mount Tow Bar Wiring - HM56301
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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 HM56301 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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Hopkins Tow Bar Wiring - HM56301

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

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.

56301 Hopkins Plug-In Simple Dinghy Towing Harness

This Product Fits The Following Vehicles

2007 - 2010 Saturn Outlook

Video of Hopkins Custom Tail Light Wiring Kit for Towed Vehicles

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Hopkins Tow Bar Wiring - Plugs into Vehicle Wiring - HM56301 Review

Today, were reviewing part number HM56301 from Hopkins. This is a Custom Tail Light Wiring Kit for towed vehicles. This kit is made specifically for the Saturn Outlook without adjustable pedals, model years 2007 thru 2010. This is an easy way to get lights to your towed vehicle whether our having to cut or slice into your RVs wiring system, it uses a simple plug-in. Lets start at the back of your Saturn for installation. This bundle with the yellow wire is installed behind your Saturn at the driver side.

This bundle with the green wire and the two plugs is installed at the passenger side behind the tail lights. Both of these bundles are connected to the converter here, which is weathered proof to protect the diodes. It also prevents electrical feedback from your RV to the towed cars electrical system. It wont interfere with the electrical system when the towed car is not hooked up to your RV. You have this long wire, this bundle here of three wires, and that runs up to the front of your Saturn Outlook, and connects with this four-pole to your RV.

You have a white wire, which is your ground, you want to install that using the included self tapping screw, and that should be mounted on a clean unpainted surface. Then for your four-pole, you have a simple mounting bracket, like that, and you have two long screws to install that. Its pretty easy to do. You also get cable ties to take up any slack in the long wire. You also have a small packet of dielectric grease.

You always want to use grease when you are making an electrical connection. If you have a four-Way on your RV, youll need to use Hopkins four-pole loop, part number HM47115. For the loop thats required, if you have a seven-Way on your RV, you want to use instead the Hopkins coiled wire adapter, part number HM47065. If you were using a supplemental braking system, its likely that you will need a brake light relay, like the loop that is sold separately, use part number RM88400. This kit does come with the 90 day warranty.

There you have it, for part number HM56301 from Hopkins, the Custom Tail Light Wiring Kit for towed vehicles. .


Ask the Experts about this Hopkins Tow Bar Wiring

Do you have a question about this Tow Bar Wiring?

  • Flat Towing Accessories for 2008 Saturn Outlook
  • In order to flat tow your Outlook, you would need base plates, a tow bar, safety cables, wiring and in most states, a supplemental braking system. I would recommend the Blue Ox # BX3330 base plate kit, which would work very well with the Blue Ox Alpha tow bar, part # BX7365. Safety cables are included.. There are many different methods of wiring the dinghy so that its lights work in tandem with those of the motorhome, ranging from a magnetic mount system like part # RM-2120 to a custom...
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Info for this part was:

Edited by:
Leah B
Written by:
Lindsey S

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