Description
The OTC 3642 Truck Electrical Circuit Tester is an essential tool for diagnosing electrical issues in 12V–24V systems. Designed for precision and durability, it helps locate shorts, grounds, and open circuits with ease. Featuring a 7-inch stainless steel probe and an extendable red coiled cord, this tester offers maximum flexibility for both automotive and heavy-duty applications.
Features:
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Comprehensive Circuit Testing – Quickly detects shorts, grounds, and open circuits.
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12V–24V Compatibility – Ideal for both automotive and heavy-duty electrical systems.
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7-Inch Stainless Steel Probe – Ensures precision and durability in testing.
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Expandable Red Coiled Cord – Compact until needed, stretching up to 24 feet for maximum reach.
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Extra-Large Clamp – Securely attaches to larger nuts, bolts, and grounds for a reliable connection.







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