---
product_id: 642649773
title: "Electrical Tester for 6V-30V Cars, Short Circuit Breaker Finder Tool, Automotive Circuit Tester, Voltage Tester, P150"
brand: "topdiag"
price: "€ 88.79"
currency: EUR
in_stock: true
reviews_count: 8
category: "Top Diag"
url: https://www.desertcart.ie/products/642649773-electrical-tester-for-6v-30v-cars-short-circuit-breaker-finder
store_origin: IE
region: Ireland
---

# 6V-30V wide voltage range 20ft cable for extended reach Short circuit locator Electrical Tester for 6V-30V Cars, Short Circuit Breaker Finder Tool, Automotive Circuit Tester, Voltage Tester, P150

**Brand:** topdiag
**Price:** € 88.79
**Availability:** ✅ In Stock

## Summary

> 🔧 Power up your diagnostics — be the fleet hero everyone trusts!

## Quick Answers

- **What is this?** Electrical Tester for 6V-30V Cars, Short Circuit Breaker Finder Tool, Automotive Circuit Tester, Voltage Tester, P150 by topdiag
- **How much does it cost?** € 88.79 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/642649773-electrical-tester-for-6v-30v-cars-short-circuit-breaker-finder)

## Best For

- topdiag enthusiasts

## Why This Product

- Trusted topdiag brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Power Probe:** Diagnose 6V-30V vehicle circuits with unmatched accuracy.
- • **Component Activation Mode:** Test starters, headlights & fuel injectors instantly.
- • **Multi-Vehicle & Multilingual:** Works on cars, trucks, motorcycles with 10+ language support.
- • **Built-in Safety Circuit Breaker:** Protect your vehicle and yourself from overloads.
- • **Intelligent Short Circuit Finder:** Pinpoint faults fast and avoid costly downtime.

## Overview

The Topdiag P150 is a professional-grade automotive electrical tester designed for 6V-30V systems. It features intelligent AC/DC voltage detection, short circuit location, component activation, and a 20ft cable for versatile vehicle diagnostics. With built-in circuit breaker protection and multilingual support, it’s the ultimate tool for fast, safe, and precise troubleshooting across cars, trucks, motorcycles, and more.

## Description

Electrical Tester for 6V-30V Cars, Short Circuit Breaker Finder Tool, Automotive Circuit Tester, Voltage Tester, P150: desertcart.com: Industrial & Scientific

Review: Fast Diagnostic Tool - First Impression - Easy to use. The bright color is easy to find in my toolbox. This tool streamlines electrical troubleshooting on the fleet I maintain. This works on tractors, trucks, trailers and agricultural implements. Any 12-24v DC system I take it to. On mine the tip will heat up until it glows when you power something, so be careful how long you hold the power button. I use it momentarily with no problems. The beeps and buzzers are impossible to ignore because they are bright and loud. That makes this tool safer IMO. There is no internal battery, which makes it even safer, and simple to maintain. The wires are long enough to reach the tail lights on almost anything. I really like it. It's intuitive, fast, brightly colored, and makes me look like I know what I'm doing even when I really don't.
Review: Works great and very cheap - Works great as a power probe! Wire length is very long. Easy to use hook up ground and test or send 12 volts to what you’re needing to test.

## Features

- Electrical Tester: Topdiag P150 is a power circuit probe tester for all 6v-30v vehicles, with 18+ professional services, it is able to perform AC/DC voltage detection, intelligent test, fuel injector inspection, resistance test, component activation, short circuit located, jump lead function, frequency, test trailer lights, bad ground checking, and polarity test, etc.
- Fuel Injector Test & Component Activation: Under component activation mode, P150 electrical tester allows to activate different components, such as starter, headlights, blowers, solenoids, cooling fans, fuel pumps, etc. And Topdiag P150 circuit tester can also test the signal of fuel injector, touch the injector with the probe, the current signal waveform will displayed on the LCD screen.
- Intelligent Testing & Short Circuit Located: Topdiag P150 test probe supports a series of intelligent testing, such as AC/DC voltage detection, resistance test and diode test and other vehicle testing. P50 probe tester automotive also supports track and locate the short circuit, help you troubleshoot faulty components accurately and quickly. In addition, P150 automotive electrical tools will come with 20ft cable, so you can perform diagnosis around the vehicle.
- Jump Lead Function & Circuit Breaker Protection: With jump lead function, Topdiag P150 probe tester can be used to check if there is a fault or problem in the power supply of your vehicle grounding. And P150 electrical circuit tester is built-in circuit breaker protection for the user and vehicle's safety. The working principle of is - the circuit breaker will trip if overload. Equipped with dual LED lights on the top of Topdiag P150 automotive electrical tester, it can light up the dark working area and help users make diagnoses even in the dark.
- Wild Application & Multiple Languages Available: Topdiag P150 circuit tester automotive can be widely use for all 12V-24V vehicle elecrtical system diagnostics, such as cars, motorcycles, excavator, SUV, steamships, etc. P150 power tester supports 10+ languages for vehicle owners: English, Spanish, French, Italian, German, Portuguese, Polish, Korean, Japanese, and more.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D4QTR483 |
| Best Sellers Rank | #9,648 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #17 in Circuit Testers |
| Brand Name | TopDiag |
| Color | Black |
| Customer Reviews | 4.6 out of 5 stars 1,791 Reviews |
| Included Components | 1 P150 Probe Tester |
| Item Weight | 0.8 Kilograms |
| Manufacturer | TopDiag |
| Measurement Type | Multimeter |
| Minimum Operating Voltage | 6 Volts |
| Model | P150 |
| Power Source | Corded Electric |
| Specification Met | Ce, Fc, Rohs |
| Style Name | P150 |

## Product Details

- **Brand:** TopDiag
- **Power Source:** Corded Electric
- **Style:** P150
- **Color:** Black
- **Item Weight:** 0.8 Kilograms

## Images

![Electrical Tester for 6V-30V Cars, Short Circuit Breaker Finder Tool, Automotive Circuit Tester, Voltage Tester, P150 - Image 1](https://m.media-amazon.com/images/I/71+RgMfWoyL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fast Diagnostic Tool
*by E***D on October 3, 2025*

First Impression - Easy to use. The bright color is easy to find in my toolbox. This tool streamlines electrical troubleshooting on the fleet I maintain. This works on tractors, trucks, trailers and agricultural implements. Any 12-24v DC system I take it to. On mine the tip will heat up until it glows when you power something, so be careful how long you hold the power button. I use it momentarily with no problems. The beeps and buzzers are impossible to ignore because they are bright and loud. That makes this tool safer IMO. There is no internal battery, which makes it even safer, and simple to maintain. The wires are long enough to reach the tail lights on almost anything. I really like it. It's intuitive, fast, brightly colored, and makes me look like I know what I'm doing even when I really don't.

### ⭐⭐⭐⭐⭐ Works great and very cheap
*by B***G on January 5, 2026*

Works great as a power probe! Wire length is very long. Easy to use hook up ground and test or send 12 volts to what you’re needing to test.

### ⭐⭐⭐⭐⭐ Definitely faster and improves your diagnostic capabilities
*by B***T on December 26, 2025*

Good quality works well highly recommend I use it for diagnosing issues in electrical problems on my vehicle vehicles

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-01-22*