ITEQ Power Circuit Probe Tester — 6V-24V Auto Electrical Tester with Polarity LED, Overload Protection, and Short Circuit Location

Overview

The ITEQ Power Circuit Probe Tester is a compact, versatile tool designed for quick electrical checks across 6V to 24V automotive systems. Its LED indicators provide immediate color feedback, helping you identify polarity at a glance. Beyond polarity, the tester also verifies continuity through switches, relays, diodes, fuses, and circuits, giving you a practical signal when paths are complete or need closer inspection.

Key benefits at a glance

• Polarity identification with clear LED signals to differentiate positive and negative connections
• Continuity testing across components like switches, relays, diodes, and fuses
• Wide compatibility with 6V–24V automotive systems including cars, trucks, boats, trailers, and motorcycles
• Overload protection that automatically disconnects at 7A, with an audible buzzer prompt
• Component activation and testing to verify operation and compare against expected draw
• Short circuit tracking to quickly locate faulty wires and fault points
• Long 157-inch test cable with large alligator clips enables flexible, one-handed operation

Practical use scenarios

In everyday repairs or DIY projects, the tester helps confirm wiring setups, diagnose partial failures, and validate component behavior without requiring a full diagnostic rig. The extended cable lets you reach across crowded engine bays or behind dashboards, reducing repositioning needs while keeping your hands near the work area.

What you can test and how it helps

• Wiring harnesses and battery connections to verify proper polarity and path integrity
• Switches, relays, diodes, and fuses to check continuity and circuit completeness
• Components inside and outside the electrical system to assess basic operability

Safety, reliability, and workflow

The device emphasizes safety with overload protection and a design suited for professional and enthusiast use. Its durable probes, bright LED indicators, and long lead aid in confident, hands-on testing. While it offers quick checks and guidance, it is intended to complement more comprehensive diagnostics rather than replace them.

How to use

• Connect the tester to the circuit you want to inspect.
• Observe LED color: red for positive, green for negative connections.
• Use it to test continuity across switches, relays, diodes, and fuses.
• Activate components to verify operation and compare current draw to expectations.
• If a fault arises, use the audible buzzer and extended cable to locate the issue efficiently.