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OTC 3636 Heavy-Duty Coil Cord Circuit Tester

4.7 4.7 out of 5 stars 718 ratings

$53.89
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Purchase options and add-ons

Brand OTC
Power Source Corded Electric
Style Handheld
Color Red
Item Weight 1 Grams

About this item

  • Designed for testing electrical circuits and locating shorts grounds and open circuits
  • Features include 12 foot heavy-duty coiled cord and checks both 6 and 12 volt systems
  • Ergonomic slim designed clear handle with a bright red slim style replaceable bulb
  • Positive contact-molded strain relief
  • High current clips with protective boots open to an extra wide 5/8 inch for ease of hook-up
See more product details

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From the manufacturer

OTC Otawonna Tools Equipment HD Specialty Service Professional Technician Diagnostic
OTC A Proud Heritage Since 1925 Quality Tools and Equipment Professional Service Specialty Tool

Proud Heritage of Manufacturing Quality Tools and Equipment
Steve Cross

Drop Forge Operator of 40 years

“I’M PROUD OF THE OTC BRAND. I’M MAKING A BRAND THAT’S BEEN AROUND A LONG TIME. ANY GUY THAT’S WORKED ON A CAR HAS HEARD OF THE OTC BRAND, AND THEY PROBABLY HAVE USED IT.”

At OTC, we're proud of our heritage and those that have built it with us.

OTC - Proudly Serving Professional Technicians for Almost a Century

What We Like Most About Technicians is Their Work Ethic

Technicians are problem solvers who aren’t afraid of sweat on their brow and grease on their hands. They provide high quality services that demand high quality tools. When they need a reliable tool, they know they can depend on OTC tools to deliver.

Owatonna Tool Company for the long haul — proudly designing and manufacturing American specialty service tools, diagnostics and shop equipment since 1925.

  • Automotive Specialty Tools
  • Heavy Duty Truck Service Tools
  • Heavy Duty Shop Tools
  • Motorcycle Tools
  • Electronic Diagnostic Tools
  • and so much more
OTC Shop Equipment Power Train Lifts Stands Cranes Presses DPF Equipment
OTC Tools Special Service Tools automobiles car truck motorcycle
OTC Professional Diagnostics Encore Scan Tool

Product Description

OTC Heavy-Duty Coil Cord Circuit Tester is designed for testing electrical circuits and locating shorts, grounds, and open circuits. The features include a 12 foot heavy-duty coiled cord. It checks 6 and 12 volt systems. It has an ergonomic, slim-designed, clear handle. It has a bright red, slim style replaceable bulb. It has a heavy-duty stainless steel probe with insulated shaft and heavy-duty clip with positive soldered connection.

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here

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OTC 3636 Heavy-Duty Coil Cord Circuit Tester

OTC 3636 Heavy-Duty Coil Cord Circuit Tester


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What's in the box

  • Unit^Instruction Guide
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    OTC 3636 Heavy-Duty Coil Cord Circuit Tester
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    Price$46.20-27% $21.99
    List:$29.99
    $29.79$8.99$8.99-13% $12.08
    List:$13.85
    Delivery
    Get it May 21 - 23
    Get it as soon as Saturday, May 18
    Get it as soon as Saturday, May 18
    Get it as soon as Saturday, May 18
    Get it as soon as Saturday, May 18
    Get it as soon as Saturday, May 18
    Customer Ratings
    Easy to use
    5.0
    4.7
    4.6
    4.5
    4.6
    Value for money
    4.7
    4.7
    3.8
    3.5
    Accuracy
    4.7
    4.2
    4.4
    Easy to read
    4.6
    5.0
    4.5
    Sold By
    Watersedgedr
    AWBLIN
    Amazon.com
    WINAMOO
    SchuhRia US Direct
    Amazon.com
    power source
    Corded Electric
    Electric
    Hand Powered
    Corded Electric
    Hand Powered
    style
    Handheld
    Circuit Testers
    Tungsten bulb
    High-Low Circuit Tester
    weight
    1 grams
    0.77 pounds
    0.1 pounds

    Looking for specific info?

    Customer reviews

    4.7 out of 5 stars
    4.7 out of 5
    718 global ratings

    Customers say

    Customers like the quality, performance, brightness and value of the electric circuit testing device. For example, they mention it's well made, works well enough to do the job and the point is sharper. That said, opinions are mixed on the clamp.

    AI-generated from the text of customer reviews

    61 customers mention54 positive7 negative

    Customers like the quality of the electric circuit testing device. They say it's well made, durable, and lasts for many years. Customers also mention that the simple design works great and is a great product for home or shop.

    "...That’s super helpful. Really like this light. It’s very sturdy and the red bulb is nice and bright." Read more

    "...nt come with an extra test bulb like so other products but overall great quality." Read more

    "...This one is heavy duty with long coiled lead so you don't keep looking for a ground" Read more

    "...The cords on these things last for many years. cheap ones crack up in just a couple years. Ergonomics is great as well" Read more

    50 customers mention42 positive8 negative

    Customers like the performance of the electric circuit testing device. They say it works well enough to do the job, is heavy duty, and has a very sharp point.

    "This is so much nicer than my cheap auto parts store tester. The point is sharper which translates to less damage to the wire and the flexible..." Read more

    "it's a test light, and it works well. it's sharp, the clamp grips appropriately, and the coiled cord is nice...." Read more

    "...I had the older model and it worked way better, but it works well enough to do the job" Read more

    "has worked well in the shop. good clamp, and a bright light" Read more

    26 customers mention22 positive4 negative

    Customers like the brightness of the electric circuit testing device. For example, they mention it's a great quality light, sturdy, and has a nice red bulb. Some say it'll be a good working light for professionals and home. Overall, most are satisfied with the brightness and versatility of the product.

    "Incandescent test lights are the best! They bulb puts a small load on circuit you’re testing. That’s super helpful. Really like this light...." Read more

    "it worked straight out of the box and lit up very well...." Read more

    "One of the better test lights Ive owned. Very bright and well made." Read more

    "has worked well in the shop. good clamp, and a bright light" Read more

    11 customers mention11 positive0 negative

    Customers are satisfied with the value of the electric circuit testing device. They mention that it is a great test light for the money, with heavy duty construction.

    "...This is your test light. The price was really good and I have no regrets at all, go get ya one...or two." Read more

    "Well made. Much cheaper than a Snap-on or Mac. Very sharp." Read more

    "Great value." Read more

    "great price on a great tool" Read more

    7 customers mention7 positive0 negative

    Customers appreciate the coiled cord on the electric circuit testing device. They say it's a nice addition and has a very long reach when stretched out.

    "...translates to less damage to the wire and the flexible coiled cable is a VERY nice addition...." Read more

    "...it's sharp, the clamp grips appropriately, and the coiled cord is nice. the insulated shaft is a nice touch.but. the bulb is red...." Read more

    "it has a nice length of cord and upgraded clamps It is built like they used to be built just like a snap on test light that I had for forty years" Read more

    "...I love the alligator clip for the ground and the coiled cord that stay out of the way...." Read more

    4 customers mention4 positive0 negative

    Customers find the electric circuit testing device easy to use. They say it's foolproof.

    "...pinpoint the place at which you’ve lost the power flow, and it’s fool proof to use...." Read more

    "was easy to use and worked well" Read more

    "It was easy to use..." Read more

    "Easy to use..." Read more

    9 customers mention6 positive3 negative

    Customers are mixed about the clamp. Some mention that it works well in the shop, has a bright light, and the ground clamp on it is nice and big. They also appreciate the upgraded clamps and the alligator clip for the ground. However, some customers feel the clamp does not feel strong and the Alligator Clip is not that strong.

    "it's a test light, and it works well. it's sharp, the clamp grips appropriately, and the coiled cord is nice...." Read more

    "Would give 5 stars on durability but it has crappy clamp , however cut it off go to lowes and buy heavy duty clamp for $2, other than that awesome..." Read more

    "it has a nice length of cord and upgraded clamps It is built like they used to be built just like a snap on test light that I had for forty years" Read more

    "has worked well in the shop. good clamp, and a bright light" Read more

    Works as effectively as the person using it.
    5 Stars
    Works as effectively as the person using it.
    it worked straight out of the box and lit up very well. the wiring and the copper clamp are not of the best quality out there, but with proper care will last a very long time. I also like the fact that most of the length of the probe is insulated and that can help preventing short when making contact between very close wires/circuits. The casing is made from a very clear reasonably good quality plastic. I was very satisfied with my purchase.
    Thank you for your feedback
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    Top reviews from the United States

    Reviewed in the United States on March 15, 2021
    Incandescent test lights are the best! They bulb puts a small load on circuit you’re testing. That’s super helpful. Really like this light. It’s very sturdy and the red bulb is nice and bright.
    Reviewed in the United States on March 18, 2020
    it worked straight out of the box and lit up very well. the wiring and the copper clamp are not of the best quality out there, but with proper care will last a very long time. I also like the fact that most of the length of the probe is insulated and that can help preventing short when making contact between very close wires/circuits. The casing is made from a very clear reasonably good quality plastic. I was very satisfied with my purchase.
    Customer image
    5.0 out of 5 stars Works as effectively as the person using it.
    Reviewed in the United States on March 18, 2020
    it worked straight out of the box and lit up very well. the wiring and the copper clamp are not of the best quality out there, but with proper care will last a very long time. I also like the fact that most of the length of the probe is insulated and that can help preventing short when making contact between very close wires/circuits. The casing is made from a very clear reasonably good quality plastic. I was very satisfied with my purchase.
    Images in this review
    Customer image Customer image Customer image
    Customer imageCustomer imageCustomer image
    4 people found this helpful
    Report
    Reviewed in the United States on July 31, 2023
    I bought that because my back light does not work. According to the instruction manual, I followed the steps and thanks God, I detected the root cause and get that job done for my old Avalon car. Now my wife she is happy! Reminder, happy wife, Happy life. Otherwise it will screw you up!
    Reviewed in the United States on April 29, 2020
    This is so much nicer than my cheap auto parts store tester. The point is sharper which translates to less damage to the wire and the flexible coiled cable is a VERY nice addition. I'm keeping the other as a backup but it won't get used again if this one is around.
    Reviewed in the United States on October 3, 2020
    I have a ohm/amp/volt meter, but many times I just want a quick “is there juice or not” test. This makes it easy to pinpoint the place at which you’ve lost the power flow, and it’s fool proof to use. I’ve only used it on 6 volts systems so far, but even the full power of battery terminal to battery terminal doesn’t burn out the bulb. I took off one star because jaws that would open more widely would make it easier to ground.
    One person found this helpful
    Report
    Reviewed in the United States on August 10, 2021
    Fit and finish is excellent a great product if your diagnosing an electric problem on your vehicle well designed. the clamp at the end of the wire doesnt open to wide just so u know and it didnt come with an extra test bulb like so other products but overall great quality.
    Reviewed in the United States on May 1, 2020
    was shocked at quality vs $5-$6 ones that are like from the Dollar store. This one is heavy duty with long coiled lead so you don't keep looking for a ground
    Reviewed in the United States on January 24, 2023
    Works like it should the clip is a little flimsy

    Top reviews from other countries

    Chris
    5.0 out of 5 stars Quality product
    Reviewed in the United Kingdom on June 15, 2022
    Really good product arrived promptly only down side was the packaging that it was was all damaged and smashed
    DR
    5.0 out of 5 stars Excellent
    Reviewed in Canada on August 17, 2019
    Excellent, Heavy Duty compared to my old one
    Richard Corongiu
    5.0 out of 5 stars Quality as expected
    Reviewed in Australia on February 14, 2021
    I've bought OTC tools before. They work and last. Materials and quality as expected. There is no point in buying cheap. It fails to work when you want it. OTC works and stays in your toolbox for ever.
    Amazon Customer
    5.0 out of 5 stars Excellent build quality
    Reviewed in Canada on November 21, 2023
    I use this daily as a heavy duty mechanic I know it's tempting to buy cheaper probes but this one has a very high quality finish and cord and lights up bright very happy with my purchase
    PRZEMEK FRYC
    5.0 out of 5 stars Good
    Reviewed in the United Kingdom on March 31, 2021
    Really good test light