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🔧 Diagnose like a pro, never miss a spark!
The NOCO OTC 3633 Mini-Coil Cord Circuit Tester is a professional-grade electrical testing tool designed for 6V and 12V vehicle systems. Featuring a bright red high-intensity bulb, a 12-foot heavy-duty coiled cord, and a precision needlepoint stainless steel probe with a versatile screw-on alligator clip, it delivers reliable detection of shorts, grounds, and open circuits. Its ergonomic slim handle and replaceable bulb make it a durable, user-friendly essential for automotive diagnostics, trusted by technicians worldwide.





| ASIN | B003YNHVQQ |
| Best Sellers Rank | 141,622 in DIY & Tools ( See Top 100 in DIY & Tools ) 158 in Circuit Testers |
| Brand | OTC |
| Colour | Red |
| Compatible Devices | Vehicles with electrical circuits |
| Customer Reviews | 4.7 4.7 out of 5 stars (968) |
| Global Trade Identification Number | 00731413505751 |
| Included Components | Product & Instructions Guide |
| Item Dimensions | 7.2 x 21.7 x 4.3 centimetres |
| Item Weight | 1 Grams |
| Manufacturer | OTC |
| Manufacturer Part Number | 3633 |
| Maximum Operating Voltage | 12 Volts |
| Measurement Type | Voltmeter |
| Minimum Operating Voltage | 6 Volts |
| Model Number | 3633 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Power Source | Corded Electric |
| Specification Met | UL 61010-1, CE Marked, RoHS Compliant |
| Style Name | Modern |
| UPC | 731413505751 521375009516 071020055936 031112405384 523161139902 012302908908 999992883251 |
| Unit Count | 1.0 count |
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