GEARWRENCH Circuit Tester: Circuit Tester, Electrical Circuits, 12V/6V, Steel, PVC
The GEARWRENCH Circuit Tester (SKU 3VTR4, MPN 129D) is a vehicle circuit tester for electrical circuits, compatible with 6V systems. It features a steel probe and PVC construction, with a tester bulb that lights if…
SKU 3G-OTH-499707
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Product Description
The GEARWRENCH Circuit Tester (SKU 3VTR4, MPN 129D) is a vehicle circuit tester for electrical circuits, compatible with 6V systems. It features a steel probe and PVC construction, with a tester bulb that lights if power is present. This single-piece tool is designed for basic circuit testing in automotive applications.
Frequently Asked Questions
What is the GEARWRENCH Circuit Tester 129D used for?
The GEARWRENCH Circuit Tester 129D is used to check for power in 6V automotive electrical circuits. Its steel probe and PVC body allow safe probing, and the built-in bulb lights when voltage is present, helping technicians quickly diagnose wiring faults in vehicles.
What are the specifications of the GEARWRENCH 129D circuit tester?
The GEARWRENCH 129D circuit tester is compatible with 6V systems, has a steel probe, PVC construction, and a single-piece design. It includes a tester bulb that lights when power is present. The tool type is circuit tester, and the manufacturer part number is 129D.
Where to buy the GEARWRENCH 129D circuit tester worldwide?
3G Electric supplies the GEARWRENCH 129D circuit tester worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us to order this tool for your automotive electrical diagnostics needs.
How to use the GEARWRENCH 129D circuit tester?
To use the GEARWRENCH 129D circuit tester, connect the probe to a circuit point and ground the clip. If the bulb lights, power is present. Always verify the circuit is de-energized before probing, and follow standard automotive electrical safety practices to avoid shorts or damage.
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Common applications for GEARWRENCHGEARWRENCH Products
3G Electric supplies GEARWRENCH vehicle circuit testers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

