Gardner Bender GAT-3400 Automotive Voltage Tester

Product Description

The GARDNER BENDER GAT-3400 is a compact automotive circuit tester designed for 6-volt and 12-volt electrical systems. The tester uses a lamp indicator to confirm circuit continuity — when the lamp burns, the circuit is complete. One end of the unit terminates in a pointed probe for contact testing at terminals, connectors, and wire ends. The other end features a 30-inch plug-in lead with an alligator clip for grounding to chassis or battery negative. Electricians, automotive technicians, and fleet maintenance professionals use this tool to quickly verify circuit presence without a full multimeter setup.

The GAT-3400 is suited for diagnostic work on passenger vehicles, light trucks, motorcycles, trailers, and other 6V or 12V DC systems. Common applications include checking fuse circuits, verifying power at switches, testing lamp sockets, and confirming ground continuity. The 30-inch lead gives enough reach to ground at the battery while probing components across the engine bay or interior. It is sold as a single unit.

Key Features

• Compatible with 6-volt and 12-volt DC automotive electrical systems
• Lamp indicator provides immediate visual confirmation of a complete circuit
• Pointed probe tip for precise contact at terminals and connectors
• 30-inch plug-in lead with alligator clip for secure chassis or battery grounding
• 1-year limited warranty

Compatibility

Designed for use on 6V and 12V DC automotive and light-duty vehicle electrical systems.

Installation Notes

This tester is used by automotive technicians and electricians for circuit verification on DC systems. Before testing, confirm the system voltage matches the 6V or 12V rating of this tool — do not use on higher-voltage systems. Attach the alligator clip to a clean, unpainted chassis ground or battery negative before contacting the probe to any live terminal. Keep the probe tip away from fuel lines, ignition sources, and airbag components during diagnostic work.

Technical Specifications

• Voltage Range: 6 volts to 12 volts DC
• Lead Length: 30 inches
• Indicator Type: Lamp
• Weight: 0.176 pounds
• Warranty: 1-year limited

Standard Information

• Brand: GARDNER BENDER
• Manufacturer Part Number: GAT-3400