🔧 3-in-1 Automotive Power Circuit Probe & Relay Tester – 12V/24V Electrical Diagnostic Tool | Buy 2 Get Free Shipping 🚚

TOO MANY TOOLS. TOO MUCH TIME.

Stop Switching Between Multiple Testers

Traditional electrical diagnosis often means tangled leads, repeated setup and constant switching between meters, probes and relay tools.

SEE THE CIRCUIT CLEARLY

Get Voltage and Polarity Answers in Seconds

The backlit LCD displays real-time DC voltage while the red and green indicators help identify power and ground without repeated range changes.

• ✓ Real-time DC voltage display
• ✓ Red indication for positive or power
• ✓ Green indication for negative or ground
• ✓ Faster checks across complex vehicle wiring

TEST BEFORE YOU REPLACE

Find Out Whether the Part Is Actually Bad

Apply positive or negative battery power through the probe to test compatible lights, motors, fans and other DC components.

• ✓ Separate wiring problems from component failures
• ✓ Avoid replacing parts that still work
• ✓ Verify compatible components directly
• ✓ Reduce unnecessary repair costs and wasted time

DEDICATED RELAY DIAGNOSTICS

Test Common Automotive Relays With Confidence

Use the integrated relay testing area to check selected common 4-pin and 5-pin automotive relays before installing replacements.

• ✓ Check relay coil operation
• ✓ Identify abnormal engagement
• ✓ Detect faulty or sticking contacts
• ✓ Reduce trial-and-error part swapping

BUILT FOR REAL REPAIR CONDITIONS

See the Connection—Even in Dark, Tight Spaces

Dual LEDs near the probe tip illuminate wires, connectors and terminals under dashboards, inside engine bays and around hard-to-see components.

• ✓ Focused light directly around the test point
• ✓ Better visibility around hidden terminals
• ✓ Ideal for engine bays and under-dash repairs
• ✓ Less dependence on a separate flashlight

WIDE VEHICLE COMPATIBILITY

One Diagnostic Tool for 12V and 24V Systems

Designed for compatible DC electrical systems across personal, recreational and commercial vehicles.

SIMPLE DIAGNOSTIC WORKFLOW

Connect. Probe. Diagnose.