---
product_id: 553067211
title: "TopDiag P100 Automotive Circuit Tester 12V 24V Tester, Car Electrical Test Tool Kit AC DC Digital Voltage Tester, Auto Diagnostic Kit (P100 10M)"
brand: "topdiag"
price: "$165"
currency: NZD
in_stock: true
reviews_count: 6
category: "Top Diag"
url: https://www.desertcart.nz/products/553067211-topdiag-p100-automotive-circuit-tester-12v-24v-tester-car-electrical
store_origin: NZ
region: New Zealand
---

# 12V/24V AC/DC voltage testing 10m extension cable for long reach LCD screen with resistance & continuity readout TopDiag P100 Automotive Circuit Tester 12V 24V Tester, Car Electrical Test Tool Kit AC DC Digital Voltage Tester, Auto Diagnostic Kit (P100 10M)

**Brand:** topdiag
**Price:** $165
**Availability:** ✅ In Stock

## Summary

> 🔧 Diagnose like a boss — never miss a spark!

## Quick Answers

- **What is this?** TopDiag P100 Automotive Circuit Tester 12V 24V Tester, Car Electrical Test Tool Kit AC DC Digital Voltage Tester, Auto Diagnostic Kit (P100 10M) by topdiag
- **How much does it cost?** $165 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/553067211-topdiag-p100-automotive-circuit-tester-12v-24v-tester-car-electrical)

## 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

- • **Extended Reach with 10m Cable:** Test trailer lights and hard-to-reach connections without hassle.
- • **Component Activation On-Demand:** Easily activate and test electrical parts in any position or grounding setup.
- • **Comprehensive Circuit Diagnostics:** Locate shorts and bad grounds fast, saving time and avoiding costly repairs.
- • **Swift Voltage & Polarity Detection:** Instantly identify DC/AC voltage and polarity to troubleshoot like a pro.
- • **Precision Continuity & Resistance Testing:** Clear LCD readouts ensure accurate diagnostics every time.

## Overview

The TopDiag P100 is a versatile 12V/24V automotive circuit tester featuring AC/DC voltage and polarity detection, resistance and continuity measurement via an easy-to-read LCD, and a 10-meter extension cable for testing trailers and remote connections. Designed for efficient troubleshooting, it also enables component activation and quick identification of electrical faults, making it an essential tool for professional-grade vehicle diagnostics.

## Description

desertcart.com: TopDiag P100 Automotive Circuit Tester 12V 24V Tester, Car Electrical Test Tool Kit AC DC Digital Voltage Tester, Auto Diagnostic Kit (P100 10M) : Automotive

Review: cumple con lo prometido - excelente producto
Review: Best purchase ever! - Works perfect!

## Features

- 【Voltage & Polarity Testing Jdiag P100】: Quickly and easily determine DC/AC voltage and positive/negative polarity. This feature allows for swift identification of electrical issues.
- 【As The Probe Tester Automotive- Resistance Continuity Testing】: The included LCD screen displays resistance values, making it convenient to assess the continuity of electrical components. Accurate readings ensure precise troubleshooting.
- 【AC Circuit Signal Testing】: With the P100, you can efficiently troubleshoot sensor circuit problems. Quickly identify issues and resolve them, saving you valuable time and effort.
- 【Component Activation】: Activate components effortlessly, whether they are in your hand, in the vehicle, or with grounding. This feature allows for seamless testing and evaluation of various electrical parts.
- 【Testing Trailer Lights and Connections】: 10-meter extension cable allows testing of cars or trucks.
- 【TopDiag P100 Automotive Circuit Tester】; Checking for Bad Ground Contacts and Locating Short Circuits.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CF8G9LJD |
| Best Sellers Rank | #737,924 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #801 in Circuit Testers |
| Brand | TopDiag |
| Color | 10M |
| Date First Available | August 10, 2023 |
| Item Weight | 8 ounces |
| Item dimensions L x W x H | 11.12 x 3.3 x 7.02 inches |
| Item model number | P100 |
| Manufacturer | JDiag Electronics Technology Co.,Ltd |
| Measurement Type | Voltmeter, Ohmmeter |
| Power Source | Battery Powered |
| Product Dimensions | 11.12 x 3.3 x 7.02 inches |
| UPC | 658359893295 |
| Upper Temperature Rating | 140 Degrees Fahrenheit |

## Product Details

- **Brand:** TopDiag
- **Color:** 10M
- **Item Weight:** 0.5 Pounds
- **Item dimensions L x W x H:** 11.12 x 3.3 x 7.02 inches
- **Power Source:** Battery Powered

## Images

![TopDiag P100 Automotive Circuit Tester 12V 24V Tester, Car Electrical Test Tool Kit AC DC Digital Voltage Tester, Auto Diagnostic Kit (P100 10M) - Image 1](https://m.media-amazon.com/images/I/31n0e8wxdSL.jpg)
![TopDiag P100 Automotive Circuit Tester 12V 24V Tester, Car Electrical Test Tool Kit AC DC Digital Voltage Tester, Auto Diagnostic Kit (P100 10M) - Image 2](https://m.media-amazon.com/images/I/41BRa5t5WrL.jpg)
![TopDiag P100 Automotive Circuit Tester 12V 24V Tester, Car Electrical Test Tool Kit AC DC Digital Voltage Tester, Auto Diagnostic Kit (P100 10M) - Image 3](https://m.media-amazon.com/images/I/41QOfojLq2L.jpg)
![TopDiag P100 Automotive Circuit Tester 12V 24V Tester, Car Electrical Test Tool Kit AC DC Digital Voltage Tester, Auto Diagnostic Kit (P100 10M) - Image 4](https://m.media-amazon.com/images/I/41RD8EjbO6L.jpg)
![TopDiag P100 Automotive Circuit Tester 12V 24V Tester, Car Electrical Test Tool Kit AC DC Digital Voltage Tester, Auto Diagnostic Kit (P100 10M) - Image 5](https://m.media-amazon.com/images/I/41s9jv3sA7L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ cumple con lo prometido
*by M***N on February 2, 2026*

excelente producto

### ⭐⭐⭐⭐⭐ Best purchase ever!
*by R***. on July 16, 2025*

Works perfect!

### ⭐⭐⭐⭐⭐ Awesome tool
*by L***D on March 25, 2024*

Yes you need this. Its a great tool to have and unlimited uses. I wish you could send power and ground the same way the power probe brand does without having to select it from the menu.

## Frequently Bought Together

- TopDiag P100 Automotive Circuit Tester 12V 24V Power Circuit Probe Tester, Car Electrical Test Tool Kit AC DC Digital Voltage Tester, Auto Diagnostic Kit (10M)
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- TM-510 Digital Multimeter, 4000 Counts, Smart Measurement, Auto-Ranging Voltmeter; Voltage Tester with Non-Contact Voltage Function, Measures AC/DC Voltage, Resistance, Continuity – Green

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-14*