--- 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: "¥19212" currency: JPY in_stock: true category: "Top Diag" url: https://www.desertcart.jp/products/553067211-topdiag-p100-automotive-circuit-tester-12v-24v-tester-car-electrical store_origin: JP region: Japan --- # 12V/24V AC/DC voltage testing Digital LCD resistance & continuity readout 10-meter extension cable for long reach 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:** ¥19212 **Availability:** ✅ In Stock ## Summary > 🔧 Diagnose smarter, not harder — your ultimate automotive circuit sidekick! ## 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?** ¥19212 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/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 cars, trucks, and trailers effortlessly without moving your vehicle. - • **Component Activation On-Demand:** Activate and test electrical parts seamlessly, whether handheld or vehicle-mounted. - • **Swift Voltage & Polarity Detection:** Instantly identify DC/AC voltage and polarity to troubleshoot like a pro. - • **Comprehensive Circuit Troubleshooting:** Pinpoint bad grounds and short circuits fast, saving time and avoiding costly repairs. - • **Precision Continuity & Resistance Testing:** Clear LCD display ensures accurate diagnostics for every circuit component. ## Overview The TopDiag P100 is a compact, battery-powered automotive circuit tester designed for 12V and 24V systems. Featuring AC/DC voltage and polarity detection, a digital LCD for resistance and continuity readings, and a 10-meter extension cable, it enables precise diagnostics of cars, trucks, and trailers. Ideal for professionals and enthusiasts, it streamlines troubleshooting of sensor circuits, grounds, and short circuits with component activation capabilities. ## 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 ## 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 | #246,766 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #329 in Circuit Testers | | Brand | TopDiag | | Brand Name | TopDiag | | Color | 10M | | Compatible Devices | Cars, Trucks, Trailers | | Customer Reviews | 4.1 out of 5 stars 9 Reviews | | Item Dimensions | 11.12 x 3.3 x 7.02 inches | | Item Weight | 8 ounces | | Item dimensions L x W x H | 11.12 x 3.3 x 7.02 inches | | Manufacturer | JDiag Electronics Technology Co.,Ltd | | Measurement Type | Voltmeter, Ohmmeter | | Model | P100 | | Number of Items | 1 | | Number of Packs | 1 | | Part Number | P100 | | Style | Compact | | Style Name | Compact | | UPC | 658359893295 | | Unit Count | 1 Count | | Upper Temperature Rating | 140 °F | ## Product Details - **Brand:** TopDiag - **Color:** 10M - **Item Weight:** 8 ounces - **Power Source:** Battery Powered - **Style:** Compact ## 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/51NRi5iH4TL.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/71583-D7FzL.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/619yInvTQDL.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/61yS0GzkVvL.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/71CoRwyWr5L.jpg) ## 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) - Auroland Non-Contact Voltage Tester with 9 Gear Adjustable Sensitivity Voltage Detector AC Circuit Tester Tool LCD Display LED Flashlight Buzzer Alarm Range12V-1000V & Live/Null Wire Judgment AC1 - 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/553067211-topdiag-p100-automotive-circuit-tester-12v-24v-tester-car-electrical](https://www.desertcart.jp/products/553067211-topdiag-p100-automotive-circuit-tester-12v-24v-tester-car-electrical) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-07*