🚗3-in-1 Automotive Power Circuit Probe & Relay Tester – 12v/24v Electrical Diagnostic Tool
Ships From: Ohio, USA (24h Dispatch)
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90-day return and exchange policy
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.
One organized diagnostic system
Spend less time setting up tools and more time identifying
the actual fault.
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
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.
Connect to the Battery
Attach the red and black clamps to a compatible 12V or 24V DC vehicle battery.
Touch the Test Point
Probe the wire, terminal, fuse, connector or compatible component you need to test.
Read and Diagnose
Use the LCD, polarity indicators, continuity response and test controls to locate the issue.
PRODUCT HIGHLIGHTS
✓Combines circuit testing, component activation and relay diagnostics
✓Real-time DC voltage readings on a backlit LCD
✓Automatic positive and negative polarity indication
✓Continuity and circuit condition testing
✓Positive and negative component activation controls
✓Testing for selected common 4-pin and 5-pin relays
✓Dual LED illumination around the probe tip
✓Built-in overload protection
✓Long cable for extended access around the vehicle
✓Compatible with supported 12V and 24V DC systems
TECHNICAL INFORMATION
Specifications
Important: For compatible DC automotive electrical systems only. Do not connect to household AC voltage. Confirm vehicle and component specifications before applying power through the probe.
FREQUENTLY ASKED QUESTIONS
What You Need to Know
STOP GUESSING. START DIAGNOSING.
Find the Fault Before You Replace the Part
Carry fewer tools, get clearer answers and take control of your next automotive electrical repair.
TEST SMARTER • REPAIR BETTER • DRIVE CONFIDENT