---
product_id: 6829449
title: "OTC 3633 Mini-Coil Cord Circuit Tester , Red"
brand: "otc"
price: "KSh13068"
currency: KES
in_stock: true
reviews_count: 13
category: "Otc"
url: https://www.desertcart.co.ke/products/6829449-otc-3633-mini-coil-cord-circuit-tester-red
store_origin: KE
region: Kenya
---

# Bright red high-intensity bulb 12 ft heavy-duty coiled cord Needlepoint stainless steel probe OTC 3633 Mini-Coil Cord Circuit Tester , Red

**Brand:** otc
**Price:** KSh13068
**Availability:** ✅ In Stock

## Summary

> 🔧 Test smarter, not harder — the pro’s choice for flawless circuit diagnostics!

## Quick Answers

- **What is this?** OTC 3633 Mini-Coil Cord Circuit Tester , Red by otc
- **How much does it cost?** KSh13068 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/6829449-otc-3633-mini-coil-cord-circuit-tester-red)

## Best For

- otc enthusiasts

## Why This Product

- Trusted otc brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Extended Reach Power:** 12-foot coiled cord lets you access tight, hard-to-reach automotive spots with ease
- • **Pinpoint Precision Probe:** Needle-sharp stainless steel tip for effortless back probing and wire piercing without damage
- • **Dual Voltage Compatibility:** Optimized for both 6V and 12V electrical systems, covering a wide range of vehicles
- • **Ergonomic & Durable Design:** Slim, clear handle built for comfort and long-lasting use in professional environments
- • **Versatile Clip-On Capability:** Threaded probe with screw-on alligator clip for hands-free, multi-angle testing

## Overview

The OTC 3633 Mini-Coil Cord Circuit Tester is a professional-grade electrical testing tool designed for pinpointing shorts, grounds, and open circuits in 6V and 12V systems. Featuring a needlepoint stainless steel probe, a bright red replaceable bulb, and a 12-foot heavy-duty coiled cord, it combines precision, reach, and durability in an ergonomic design trusted by automotive technicians worldwide.

## Description

The standard in electrical system testing - this basic and simple to use tester provides the capability to locate shorts, grounds, and open circuits. Needlepoint stainless steel probe allows easy back probing and piercing. Special threaded probe comes with screw on alligator clip for additional versatility. Bright red, high intensity /slim style replaceable bulb. 12 foot long, red, heavy-duty coiled cord lead. Ergonomic, slim design clear handle. For use with 6 volt and 12 volt systems. Value is at the core of the OTC tool and equipment portfolio. For a simple repair or the most complex drivability concern, these award-winning tools universally solve problems faster, and at better value, than any other product line available. Whether it’s a specialty tool or unique piece of service equipment, OTC provides top solutions to modern automotive service challenges while increasing technicians’ productivity and shop profits.

Review: High quality made very well - Really good product as usual OTC brand high quality is easy to use anywhere in the car fuse box under the hood or under steering wheel, wire terminals even if they are tiny i used one of the teammate working in the shop .i do receive the one purchased from desertcart in the weekend i just make test on 9v battery .
Review: Good quality - I was thinking about getting a snap on one until I seen this, comes with another alligator clip,it being so small makes it feel better in your hand and easy to get into tighter areas. The tip being so pointed and small makes it’s easy to pierce wiring without breaking wire or putting a big whole

## Features

- The standard in electrical system testing - this basic and simple to use tester provides the capability to locate shorts, grounds, and open circuits
- Needlepoint stainless steel probe allows easy back probing and piercing; special threaded probe comes with screw on alligator clip for additional versatility
- Bright red, high intensity /slim style replaceable bulb
- 12 foot long, red, heavy-duty coiled cord lead; ergonomic, slim design clear handle
- For use with 6 volt and 12 volt systems

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003YNHVQQ |
| Best Sellers Rank | #156,730 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #243 in Circuit Testers |
| Brand | OTC |
| Color | Red |
| Customer Reviews | 4.6 4.6 out of 5 stars (980) |
| Date First Available | November 28, 2008 |
| Global Trade Identification Number | 00731413505751 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.035 ounces |
| Item dimensions L x W x H | 2.85 x 8.55 x 1.7 inches |
| Item model number | 3633 |
| Manufacturer | OTC |
| Manufacturer Part Number | 3633 |
| Measurement Type | Voltmeter |
| Min. Operating Voltage | 6 Volts |
| OEM Part Number | 3633 |
| Power Source | Corded Electric |
| Product Dimensions | 2.85 x 8.55 x 1.7 inches |
| Style | Modern |
| UPC | 731413505751 521375009516 071020055936 031112405384 523161139902 012302908908 999992883251 |
| Voltage | 12 Volts |

## Product Details

- **Brand:** OTC
- **Color:** Red
- **Item Weight:** 1 Grams
- **Power Source:** Corded Electric
- **Style:** Modern

## Images

![OTC 3633 Mini-Coil Cord Circuit Tester , Red - Image 1](https://m.media-amazon.com/images/I/41XqTOroZuL.jpg)
![OTC 3633 Mini-Coil Cord Circuit Tester , Red - Image 2](https://m.media-amazon.com/images/I/61h-R0nhd5L.jpg)
![OTC 3633 Mini-Coil Cord Circuit Tester , Red - Image 3](https://m.media-amazon.com/images/I/71T1O9wV-OL.jpg)

## Questions & Answers

**Q: how many amps does this pull on a 12v system?**
A: Mine, with the factory installed bulb draws 157mA @ 13.1V... which comes to dash over 2W all said & done.

**Q: can it be used on  24 V AC circuit's**
A: No it can't but the OTC 3642 will do 24v systems but I'm not sure about ac current though

**Q: Is this item computer safe?**
A: Pulls, at peak, less than half an amp and 50 mA continuous. Use inline when circuit integrity testing and is very safe and useful when applied properly. Great for 5volt reference circuits. And yes this is the model ScannerDanner uses in 80% of his 1000+ videos.

**Q: I need to replace the fuse in my tester, I have 12v fuses just wanted to know what amp fuse is used.**
A: They are 1.5v bulbs, not fuses.... low amp consumption.  Otc sell them on Amazon. Do not use a fuse.

## Customer Reviews

### ⭐⭐⭐⭐⭐ High quality made very well
*by M***N on November 10, 2025*

Really good product as usual OTC brand high quality is easy to use anywhere in the car fuse box under the hood or under steering wheel, wire terminals even if they are tiny i used one of the teammate working in the shop .i do receive the one purchased from amazon in the weekend i just make test on 9v battery .

### ⭐⭐⭐⭐⭐ Good quality
*by A***A on October 3, 2025*

I was thinking about getting a snap on one until I seen this, comes with another alligator clip,it being so small makes it feel better in your hand and easy to get into tighter areas. The tip being so pointed and small makes it’s easy to pierce wiring without breaking wire or putting a big whole

### ⭐⭐⭐⭐⭐ Great test light
*by J***L on February 17, 2025*

Very well built test light and does exactly what it's supposed to! Love the compact size and bright incandescent bulb. Needle tip has a threaded end and comes with an alligator clip.

## Frequently Bought Together

- OTC 3633 Mini-Coil Cord Circuit Tester , Red
- OTC 3633-10 Replacement Bulb, (Pack of 10)
- OTC 3642 Truck Electrical Circuit Tester - 12V-24V with 24 Foot Cord,Red

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**Shop now:** [https://www.desertcart.co.ke/products/6829449-otc-3633-mini-coil-cord-circuit-tester-red](https://www.desertcart.co.ke/products/6829449-otc-3633-mini-coil-cord-circuit-tester-red)

---

*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-02-08*