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Metra GK5225 hook probe tester with 59 inch cord and alligator clip

Metra GK5225 6V 12V DC Voltage Hook Probe Tester 59 Inch Cord

SKU CH-PYXV-Y5T2E MPN GK5225

Tests DC 6 V to 12 V circuits with LED and buzzer alerts using a 59 inch cord and interchangeable hook probes

  • FeaturesCorded Electric, false
  • Height11 L x 1.5 W x 1.5 H inches
  • Width11 L x 1.5 W x 1.5 H inches
  • Length11 L x 1.5 W x 1.5 H inches
  • Sports Team1 Piece
  • TypeVoltmeter
  • Tests 6V and 12V DC circuits up to 15V
  • 59 inch oil and heat resistant cord reaches far
  • Stainless steel hook probe locks onto wire one handed
  • Red and green LEDs plus buzzer give clear signal
  • Three interchangeable probes for touch or pierce testing

Automotive DC Voltage Tester

The Metra GK5225 is a hook probe tester designed for 6V and 12V DC circuits in automotive electrical systems. It helps technicians and DIY users identify short circuits, check fuses, test connections and inspect wiring harnesses. Three interchangeable probes allow both touch-type and pierce-type testing methods. The tool suits workshop radio installs, brake controller wiring and trailer light diagnostics.

Limited To Low Voltage DC Circuits

This tester operates only on DC circuits between 6V and 12V and must not be used above 15V. It is not recommended for sensor wiring or computer-controlled circuits where the voltage or sensitivity falls outside this range. The 59 inch insulated cord resists heat and oil but does not extend the voltage rating. Users must verify the circuit voltage before connecting the alligator clip and probe.

Hand-Held Hook Design Reduces Fatigue

A spring-loaded hook grabs the wire so the stainless-steel probe can pierce insulation with one hand, leaving the other hand free. The plastic sleeve removes to convert the tool to a simple touch probe. Red and green LEDs plus a loud buzzer give clear pass or fail indication without looking away from the work. The hook cover prevents accidental finger stabs during insertion.

Highlights

  • Tests 6V and 12V DC circuits up to 15V
  • 59 inch oil and heat resistant cord reaches far
  • Stainless steel hook probe locks onto wire one handed
  • Red and green LEDs plus buzzer give clear signal
  • Three interchangeable probes for touch or pierce testing

Specifications

BrandMetra
FeaturesCorded Electric, false
Height11 L x 1.5 W x 1.5 H inches
Width11 L x 1.5 W x 1.5 H inches
Length11 L x 1.5 W x 1.5 H inches
Sports Team1 Piece
TypeVoltmeter

Questions about this item

Should I use the hook probe or the touch probe for my 12 V trailer wiring job?

Use the hook probe to pierce and lock onto the wire for hands-free testing, or remove the sleeve and use the touch probe for quick checks. Both work on 6-12 V DC circuits.

What do the red and green LEDs plus the buzzer actually tell me when I pierce a 12 V circuit?

The two high-visibility LEDs and loud buzzer give immediate audible and visual confirmation that voltage is present on the tested wire.

Does the 59 inch cord limit the voltage I can measure on a 12 V system?

No, the 59 inch insulated cord is rated for heat and oil resistance and does not cap the 6-12 V DC measurement range; do not exceed 15 V.

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