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Internet #206798894

Model #1486

Store SKU #1001724093

$687
  • Durable, impact and corrosion resistant
  • Built for lasting performance and reliability
  • Easy to use, compact design
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Price:
$687

Product Overview

The TowSmart 4-Way LED Light Tester is the quickest and easiest way to test 4-way flat trailer plugs on towing vehicles. Simply plug the light tester into your tow vehicle and the LED lights will illuminate to ensure all functions are working properly. The small compact design allows you to easily store in small spaces such as your glove compartment or pocket.
  • Fits 4-way flat plugs
  • Tests left, right, tail and brake lights for performance
  • Easy grip handle provides easy attachment and removal
  • Offers corrosion resistant terminals for superior connection when testing lights


  • Towing class chart describes each trailer weight range.










Info & Guides

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Ratings
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Automotive Part TypeTrailer Wire Tester Trailer Wire TesterCar Wiring
Light functionBrake and Turn Signal Brake and Turn Signal
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Specifications

Details

Product Weight (lb.)
0.1 lb
Returnable
90-Day

Warranty / Certifications

Manufacturer Warranty
1 Year Limited Warranty

Questions & Answers

Typical questions asked about products:

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Customer Reviews

  • 4.5
    out of 40 reviews
  • 94%recommend this product
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Showing 1-10 of 40 reviews
LED Light Tester This is a very useful device. Often it is difficult to tell why a trailer light ...
LED Light Tester This is a very useful device. Often it is difficult to tell why a trailer light isn’t working. The fault could be in the trailer wiring or it could be the automobile wiring. It is possible to check the automobile wiring output with a volt meter, but that is award and requires knowing the wiring schematic of the output. With this device just simply plug in the device and cycle through signals, brake and running lights. When signaling left, the led indicating left bright filament will flash. When signaling right the LED indicating right bright filament will flash. When braking both the right and left indicating LEDs turn on solid. When running lights then the running light LED turns on. I’ve already learned that the right signal light on my automobile wiring is damaged. Fabulous product.
by
  • Recommended
1 person found this helpful
Good for what it is. If you need to check if your vehicle's trailer wiring is functiong properly...
Good for what it is. If you need to check if your vehicle's trailer wiring is functiong properly, this will do the trick. Its quick and easy. It is not going to check the wiring on the trailer itself. That being said, for a little more money I could do the same thing with a digital multi-meter. Although a multi-meter is not as quick and easy, I would probably get more use out of the multi-meter. But for a couple of bucks you can throw this little light tester in the glove box and get some piece of mind - especially when you are away from home. It's not like I am going to keep my multi-meter in the glove box. The tester is easy to grasp making it easier to plug in and remove from your vehicle. The leds are easy to see and provide a quick reference. You will need someone to hold the brake pedal down while you check that the brake wiring is functioning properly. The only real gripe I have about this product, is that they do not include any instructions - just a disclaimer that they are not liable for any damages resulting from the use of this product. They could have a least molded in a few letters to let you know what each led indicates. I have attached a picture of the device with each light labeled.
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  • Recommended
2 people found this helpful
This tester indicates turn, brake and headlight function for a 4-wire trailer plug. I keep it in...
This tester indicates turn, brake and headlight function for a 4-wire trailer plug. I keep it in my truck now, all the time! You never know when you hook up a boat or utility trailer if the trailer has bad lamps, or if there’s a bad connection. The 1st light is headlights/running lights with a brown wire, the 2nd is right turn with a green wire, and 3rd is left turn with a Yellow wire. Brakes are indicated with both turn lights lit at the same time (green + yellow wires both hot). The white wire is ground, and is the odd pin (the one that sticks out when all the others stick in, or vice-versa depending on which side of the plug you’re on!). The wiring convention for 4-wire trailers is: White-Ground Brown-Tail/Running Lights Green-Right Turn/Brake - Remember green has an R in it Yellow-Left Turn/Brake - Remember yellow has an L in it Green + Yellow both on indicates brakes. I wish the packaging or molded plastic had this code/convention printed on it, but once you know it, you’re good - the important thing is that each wire tests good, and when the brakes are on, both turn signals come on simultaneously: it’s not a short!
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  • Recommended
2 people found this helpful
Tow Smart/Winston Products LLC and The Home Depot have a great little gadget for anybody with a t...
Tow Smart/Winston Products LLC and The Home Depot have a great little gadget for anybody with a trailer needs in their toolbox! This Trailer Light tester is a must if you use multiple vehicles to tow it ! With all the adapters that are used to hook up your trailer to different vehicles, you need to know how they are wired. The LED lights will show you if left IS left and right IS right ! Also if the ground wires are working ! The green LEDs are bright even in direct sunlight ! You can check your wires and then the other vehicle to make sure they're compatible !! I love this gadget !!
by
  • Recommended
works great. shows exactly which lines are active as you...
works great. shows exactly which lines are active as you use all your vehicles lights.
by
    Documentation?
    Ok it works, but how about some documentation on what the lights should look like
    by
    Response from TowSmart TeamNov 10, 2021
    Hello, if you look this part up on the Home Depot Website, there is an image of the light tester lit up. If that is not what you are looking for, please reach out to us at 844-295-9215 or http://towsmart.us/contact/ and we will try to get you what you are looking for! - TowSmart Team towsmart
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        by
          This is for a four (4) pin trailer connector (utility...
          This is for a four (4) pin trailer connector (utility trailer). worked well. It helps to have someone in the vehicle to switch turn signal, hit the brake pedal etc.
          by
          • Verified Purchase
          plug in and go. simple and easy to use....
          plug in and go. simple and easy to use.
          by
          • Verified Purchase
          Showing 1-10 of 40 reviews