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Modulite Protector 5-Way Flat w/ Integrated Circuit and Overload Protection

Modulite Protector 5-Way Flat w/ Integrated Circuit and Overload Protection

Item # 119177
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Tekonsha Trailer Wiring - 119177
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Modulite Protector with Integrated Circuit & Overload Protection Lowest Prices for the best trailer wiring from Tekonsha. Modulite Protector 5-Way Flat w/ Integrated Circuit and Overload Protection part number 119177 can be ordered online at or call 1-800-940-8924 for expert service.
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Tekonsha Trailer Wiring - 119177

  • Trailer Connectors
  • Vehicle End Connector
  • 5 Flat
  • Plug and Lead
  • Tekonsha

Modulite Protector with Integrated Circuit & Overload Protection


  • Standard 5-Flat connector for backup light or surge brake lockout circuit
  • Works with 2 or 3 wire light systems
  • Works with either LED or incandescent bulbs
  • 7.5 amps for the tail light circuit and 4.2 amps for the turn/stop & backup circuits
  • Blue wire designed to override surge coupler for backing up
  • Will also work with standard 4-flat connector
  • Has integrated re-settable short circuit and overload protection
  • The trailer brakes will override the hazard lamps when the brake is activated
  • Designed not to send feedback through vehicle circuits
  • Upgraded circuitry works with vehicles that use a pulse width modulation (PWM); this gives the trailer lights full brightness
  • Double-sided tape for mounting
  • Draws power directly from the tow vehicle battery; uses less than 5 milliamps of the vehicle circuit

119177 Modulite Protector w/Integrated Circuit & Overload Protection

Installation Details 119177 Installation instructions

California residents: click here

Customer Reviews

Modulite Protector 5-Way Flat w/ Integrated Circuit and Overload Protection - 119177

Average Customer Rating:  5.0 out of 5 stars   (3 Customer Reviews)

Modulite Protector with Integrated Circuit & Overload Protection


Their customer service is even better than [online]. And I like [online]. With these type of trailer parts it really helps to have the etrailer technical support before and after purchase. [online] doesn’t offer that. Thanks etrailer.


After another store botched my SUV wiring installation leading to a short circuit and a need to rewire, I found this item for a great price. I wired it myself. It was simple and has worked perfectly with my LED lights and new trailer wiring. Very happy.


Still working perfectly, with zero issues to date.


See what our Experts say about this Tekonsha Trailer Wiring

  • Can a 5-Way Hardwire Trailer Wiring Harness be Installed on a 2004 BMW X5
    Yes, you can use a 5-Way hardwire trailer wiring harness on your 2004 BMW X5 but I recommend # 119177KIT since it comes with the additional wiring and other parts you will need to complete the installation.
    view full answer...
  • 5-Way Wiring Kit Recommendation for Truck Towing Trailer with 5-Way
    We have just what you need with the part # 119177. This is basically a standard 4-way wiring kit with the additional reverse light circuit and instead comes with a 5-way. So you can install it directly without having to convert the 4-way to a 5-way later.
    view full answer...
  • 5-Way Trailer Wiring Harness Recommendation for a 2008 BMW X5
    Since all of the trailer wiring options we have for your 2008 BMW X5 are hardwire options the best solution will be to use the # 119177 which is also a hardwire option but it comes with a 5-way that you can wire the reverse light circuit to. This way you wouldn't have to deal with any adapters.
    view full answer...
  • Tow Ready Wiring Kit # 119177 Recommendation for 1995 Volvo 850 Pulling a Trailer with Surge Brakes
    For your 1995 Volvo 850 I would recommend that you install a Tow Ready Wiring Harness Kit, part # 119177, like the one you referenced. This product has a 5-way connector that would provide you with a reverse lockout solenoid circuit and would work well for you. I attached installation instructions below for you to check out also.
    view full answer...
  • Will the 5 pole Wiring Harness Fit on a 2004 VW Touareg V8 with No Electrical Problems
    The Universal Power Converter 5-Way Flat and Circuit Protection with Hardwire Kit and Tester, item # 119177KIT, is compatible with your Toureg. This wiring harness will install the same as the wiring harness that is recommended for your vehicle, item # 119176KIT, with the exception of the extra blue wire that is connected to the vehicle reverse light circuit for locking out surge brakes on boat trailers. The reverse light circuit is also circuit protected to protect your vehicles sensitive...
    view full answer...
  • 4-Way to 5-Way Adapter for 2013 Chevy Malibu
    The adapter you need is the part # 20036 which will convert your vehicle's 4-way to a 5-way. The 5th pin will get ran to the reverse light circuit of your vehicle.
    view full answer...
  • Troubleshooting New Tail Light Not Working on Trailer
    If your new tail light isn't working on your trailer you will just want to make sure you have it wired correctly with a secure ground. I am not sure what type of tail light assembly you installed but you will need to make sure that its power wire is connected to the running light wire on the trailer. A lot of lights will have a separate wire for ground (usually white) but many simply ground through their mounting hardware. In either case you will need to make sure it is connected to a...
    view full answer...
  • Trailer Wiring Needed to Tow a Boat Trailer with a 2011 Land Rover
    You are not being mislead. The line of Land Rover vehicles have European wiring, sensitive circuitry and computers that require a circuit protected and converted wiring system for towing American made trailers with combined trailer lighting. Since you mentioned a 5-Way connector, you would also need to protect the circuit coming from your vehicles reverse light circuit. The only wiring harness that we stock that provides protection for the reverse light circuit is the Tow Ready 5-Way Wiring...
    view full answer...
  • How to Find the Reverse Light Circuit for 5 Way Install on a Toyota Sienna 2014
    I can help you figure out which wire you will need to use, but I do not know which color wire you would need. Since your reverse lights are in the rear hatch of your 2014 Toyota Sienna you will want to find test the wires that are in the rubber wire loom that should be at the top of the hatch between the door and the threshold for the door. In that loom there should be the circuit that has the reverse light circuit. Once you find it there you can then take apart the inside interior pieces...
    view full answer...
  • 5-Way Trailer Wiring Recommendation for a 2004 Mitsubishi Montero Sport
    The Modulite Power Converter 5-Way Flat # 119177KIT would be exactly what you would need. You will be able to hardwire this kit to your 2004 Mitsubishi Montero Sport taillight wiring and you will have a fully functional 5-way. Check out the install instructions I attached for more info.
    view full answer...
  • Troubleshooting Trailer Running Lights Not Functioning on a 2009 Honda Pilot
    Depends on the amperage draw of your trailer running lights and what the license plate light circuit or running light circuit of your 2009 Honda Pilot is rated for. If the taillight circuit of your Pilot can handle the additional draw of your trailer running lights you might be okay for a temporary situation like getting back home so that you can fix it. But I would not recommend this as a permanent solution as you could blow some fuses or damage wiring. You might first check the trailer...
    view full answer...
  • 5-Pole Flat Modulite Wiring Harness for 2006 Infiniti G35
    We do indeed offer a 5-pole flat connector Modulite wiring harness for your 2006 Infiniti G35, Tow Ready part # 119177KIT. That item is an all-inclusive installation kit with connectors, circuit tester and everything needed for complete installation. This harness works with both standard incandescent and LED-type trailer lighting and it is compatible with both 5-pole and 4-pole trailer-side connectors. Written instructions are linked for your review.
    view full answer...
  • Is Tekonsha Trailer Wiring 119177KIT Compatible with 2021 Volkswagen ID 4
    Yes, the Tekonsha trailer wiring kit part # 119177KIT that you have now will work on your 2021 Volkswagen ID 4 as this is a universal style of trailer wiring that Tekonsha recommends for your vehicle.
    view full answer...
  • 2017 Nissan Armada 5-Way Trailer Wiring Harness Recommendation
    The Tekonsha Modulite Protector 5-Way Flat # 119177 is what you are going to need to install a 5-way in your 2017 Nissan Armada. This will require you to splice into your vehicle's wiring for all the circuit including the reverse light. Since the reverse light is in the rear hatch of your vehicle you'll have to find the wiring harness up near the hatch hinge that has all of the taillight wiring and test all of the wiring there till you find the circuit that has power only when the vehicle...
    view full answer...
  • Recommendation to Install 5-Way Connector on 2008 Honda Ridgeline
    The Tekonsha Modulite Protector 5-Way Flat # 119177 referenced in your question is a universal harness that can be installed on your 2008 Honda Ridgeline. This hardwire kit will require you to splice in all of the wires to the tail light wires on your Honda Ridgeline to give you the needed 5-Way to connect with your boat trailer. With this in mind, an easier option will be to simply install the Tekonsha T-One Vehicle Wiring Harness # 118400. This custom-fit, 4-Way harness will connect...
    view full answer...
  • Powered Tail Light Converter for a 2008 BMW X3 and Trailer with Separate Brake and Turn Lights
    The # 119177KIT could be used on your 2008 BMW X3. However, in addition to the 5 wire converter, you will need another converter, # 118158. The reason is the 5 wire converter will combine the brake and turn signals. Since your trailer has separate turn and brake lights, the second converter is needed. The running light circuit will bypass the second converter. Only the ground, right turn/brake and left turn/brake will going into the converter. What I would do is cut off the 5-Way connector...
    view full answer...
  • Towing Trailer with 5-Pole Flat Trailer Connector Using Vehicle with European 7-Way
    We don't have an adapter available, but you can easily install a 5 pole connector to your vehicle using part # 119177KIT. The kit includes a circuit tester that you can use to probe the wires in the vehicle's taillight assemblies to determine which wire carries which circuit. The inputs of the converter would install as follows: Yellow wire to left turn signal circuit Green wire to right turn signal circuit White wire to ground Brown wire to running light circuit Blue wire to reverse...
    view full answer...
  • Installing Tow Ready Modulite Power Converter, 5-Way Flat on 2012 Mercedes Sprinter
    The Tow Ready Modulite Power Converter 5-Way Flat and Circuit Protection # 119177KIT is a universal installation application, so we do not have specific installation instructions for a 2012 Mercedes-Benz Sprinter. You will want to splice the wiring harness into the Sprinter's factory wiring using the included quick-splice connectors. When we installed a similar wiring harness on a 2013 Sprinter, the wiring connections were made a couple of inches before the taillight connector at the...
    view full answer...
  • Availability of 5-pole Flat Trailer Connector for 1994 Toyota Land Cruiser
    Although it's not a plug and play option, there is a hardwired option available, part # 119177KIT. This is a universal application, the inputs would wire into the right turn, left turn, brake, running light and reverse light circuit. The converter would ground to the vehicle frame and would be powered by its fused connection to the vehicle battery. The wiring harness includes a basic circuit tester, so you can probe the taillight wiring harnesses feeding the taillight assemblies to determine...
    view full answer...
  • Availability of a Taillight Converter With a 5-Pole Flat Trailer Connector for 2008 BMW X3
    Tow Ready offers a Modulite taillight converter with a 5 pole, part # 119177KIT. The converter is compatible with your X3, and provides the circuit tied in with the vehicle taillight to activate the lock-out on your surge coupler. I've linked you to an install video showing a different wiring harness being installed on an older X3. The procedure might be a bit different on your vehicle, but the video should give you a pretty good idea of what the installation involves. The blue wire from...
    view full answer...
  • Wiring Harness Recommendation for an Audi Q7 with 5-Way Flat Connector
    I recommend installing the Tow Ready Modulite Power Converter Kit with 5-Way Flat Connector, # 119177KIT. This harness has the standard 5-way flat connector for your surge brake lockout circuit and it uses a powered converter to protect the electrical system on your Audi Q7. This harness will work with LED or incandescent lights and it comes with all of the hardware and wire necessary to complete the installation. I have attached a link to the installation instructions. Keep in mind,...
    view full answer...
  • Adding a 5-Way Trailer Connector to a 2012 Audi Q5 to Tow a Trailer with Electric Reverse Lockout
    The best option to add a fifth pin for the reverse light circuit on your 2012 Audi Q5 will be to install the Modulite Wiring Harness, # 119177KIT. The reverse light circuit on your vehicle likely uses pulse width modulation (PWM) like your other tail light circuits and would require a wiring harness with a powered converter box that can detect PWM. Since you already have a PWM wiring harness installed on your vehicle, you could just cut the wires from the input side of the converter box...
    view full answer...
  • Needing Trailer Wiring Harness to Operate Reverse Lamps on Trailer
    The Tow Ready T-One Vehicle Wiring Harness you referred to, part # 118640 will feed the trailer running lamps, brake lamps and right and left directional signals, but not reverse lamps. We do not have a plug and play wiring harness option that would provide a 5-pole, but you could hardwire one using part # 119177KIT. You would use the tester included in the kit to test the wires feeding the factory taillight assemblies to locate which wire carries the right turn, left turn, brake lamp,...
    view full answer...
  • Will Trailer Wiring Harness # 119177 Fit a 2007 Dodge Ram 2500
    You could use trailer wiring harness # 119177KIT if you needed a 5-Way flat trailer connector. However the 5th function is not for trailer brakes it is made for use with a trailer that has an electric reverse lock out on a surge coupler. When the vehicle is put in reverse it sends power to the solenoid which does not allow brake fluid to go back to the trailer brakes so the trailer can back up without the brakes engaging. If your truck did not come with any kind of trailer wiring then...
    view full answer...

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Info for this part was:

Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Jeff D
Installed by:
Jeff D
Employee Adele M
Updated by:
Adele M
Employee Laura H
Updated by:
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Employee Wilson B
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Employee Alexander C
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