


🔧 Power up your diagnostics with reach and precision—don’t get left in the dark!
The OTC 3642 Truck Electrical Circuit Tester is a professional-grade tool designed for 12V-24V truck systems. Featuring a 7-inch stainless steel probe and a 24-foot extendable red coiled cord, it enables precise testing of electrical circuits, shorts, grounds, and open circuits. Its extra-large clamp fits larger grounding points, making it ideal for heavy-duty vehicle maintenance. Trusted by technicians for its durability and efficiency, this tester accelerates troubleshooting and enhances workshop productivity.





| Brand | OTC |
| Power Source | Battery Powered |
| Style | Modern |
| Color | Red |
| Item Weight | 1 Grams |
| Item dimensions L x W x H | 13.9 x 2.1 x 0.1 inches |
| Min. Operating Voltage | 12 Volts |
| Measurement Type | Voltmeter |
| UPC | 731413505805 071090090493 012302669731 031112405643 971474694401 666661072208 012303704974 523161182243 |
| Manufacturer | OTC |
| Global Trade Identification Number | 00731413505805 |
| Model | 3642 |
| Item Weight | 0.035 ounces |
| Product Dimensions | 13.9 x 2.1 x 0.1 inches |
| Item model number | 3642 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 3642 |
| OEM Part Number | 3642 |
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