VDIAGTOOL V500 Pro Automotive Circuit Probe Tester, VDT-V500-PRO

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Product guide

VDIAGTOOL V500 Pro Automotive Circuit Probe Tester, VDT-V500-PRO

VDT-V500-PRO: The VDIAGTOOL V500 Pro is an automotive circuit probe tester combining wire tracing with multimeter and oscilloscope functions. It is intended for diagnosing vehicle wiring and components, with the listing also describing injector tests and adjustable low-voltage output.

At a glance

Combines wire tracing, multimeter-style readings and oscilloscope display in one diagnostic tool.
The listing describes a mode for locating open connections and broken wires by changes in tone.
Can supply adjustable 0-5V output for low-voltage circuit and sensor diagnosis, according to the listing.
Rotating screen is specified as turning 90° for changing viewing angle.

Price

£169.98Save 15%

Reference price: ~~£199.99~~

Price checked: 14 Nov 2026

View offer

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Pros and cons

Pros

A broad set of described functions may reduce the need to switch between separate tools during vehicle electrical diagnosis.
Relay testing, component activation and injector pulse testing are included among the stated diagnostic uses.
The claimed supported vehicle range includes cars, commercial vehicles, tractors, boats and RVs.

Cons

The supplied listing does not give measurement accuracy, resolution or detailed operating limits for the individual test modes, which may matter for professional diagnostic work.

Technical specifications

10 specifications

Identity
Brand	VDIAGTOOL
Model	VDT-V500-PRO

Power
Power configuration	Battery Powered
Minimum operating voltage	9 Volts
Maximum operating voltage	30 Volts
Direct current maximum	25 Amps
Adjustable power supply	0-5V

Measurement and functions
Measurement type	Voltmeter
Listed measurements	Voltage (VDC), Resistance(OHM), Diode (DIO), Current (AMP), Frequency (HZ), and Polarity

Compatibility
Compatible devices	Cars, SUVs, minivans, trucks, tractors, boats, RVs, electrical components (bulbs, radiator fans, starter motors, relays, window regulators, windshield wipers)

What to know before buying

Listing details to confirm

Listing details are inconsistent about the package and cable: the included-components field names a wire tracer, cigarette lighter adapter, 20ft cable and 9V battery, while the detailed kit list names a short/open finder and a different assortment of probes and leads without confirming those four items. Check the selected listing's exact bundle. The title also describes a 9V-30V tester, while the style text mentions a 0-5V supply. These appear to refer to different functions, but the listing does not explain their operating relationship.

What’s in the box

Probe tester kitIncluded
Wire tracerCheck selected pack
Cigarette lighter adapterCheck selected pack
20ft cableCheck selected pack
9V batteryCheck selected pack
Short/open circuit finderIncluded
Probe tips, including fine probe tipIncluded
Probe tip extension cableIncluded
Wire-piercing probes (2)Included
Banana-to-banana test leads (2)Included
Fuses (3)Included
Relay test cableIncluded
Alligator battery clipIncluded
Type-C data cableIncluded
User manualIncluded

Check which accessories are included in your selected pack before buying.

Who is it for?

A good fit for

Automotive technicians and experienced DIY users troubleshooting vehicle wiring, open circuits, components or relays.
Users who want wire tracing and several electrical test modes in a single tool.
Diagnosing low-voltage vehicle sensor circuits using the stated adjustable supply function.

Less suited to

Buyers who need published measurement accuracy or complete operating limits before choosing a diagnostic instrument.
People seeking an OBD code reader, as the supplied listing describes circuit testing rather than ECU code-reading functions.

VDIAGTOOL V500 Pro Automotive Circuit Probe Tester, VDT-V500-PRO · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 296 ratings

5 stars81%81%
4 stars9%9%
3 stars5%5%
2 stars1%1%
1 star4%4%

Customer feedback highlights versatility, build quality, the display and time-saving use, including praise for relay testing. Some customers like the cable length, while others find the extra length awkward to manage. For buyers using multiple probe functions around a vehicle, the reported convenience may be useful, though the listed 20ft cable itself is not consistently confirmed in the package details.

Positive themes

Customers describe the tester as versatile and report that it can replace several tools on a workbench.
Feedback praises build quality, display features and time-saving use, with relay testing singled out as convenient.

Mixed feedback

Cable length is appreciated by some customers, while one report describes handling the extra cord as a minor hassle.

Frequently asked questions

What kinds of tests does the V500 Pro offer?

The listing describes voltage, resistance, diode, current, frequency and polarity readings, along with continuity, grounding, wire tracing, oscilloscope, relay, fuse, component activation and injector tests.

What vehicle voltage range is listed?

The listed minimum and maximum operating voltages are 9 Volts and 30 Volts. Separately, the product description states an adjustable 0-5V supply for low-voltage circuit diagnosis.

Does it include a wire tracer and cable?

The included-components field names a wire tracer and 20ft cable, but the more detailed kit list differs and does not confirm those items. Check the selected listing's package contents before buying.

Is a 9V battery included?

One included-components field lists a 9V battery, but the detailed kit list does not. The exact supplied battery and package should be confirmed with the selected listing.