1. Home
  2. Topics
  3. Automotive Wiring Diagram

Best Automotive Wiring Diagram Apps

190+ iOS apps curated and reviewed

4.4 avg rating
18 free apps
Updated June 2026

Looking for free automotive wiring diagram apps? 18 of our 190+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Top Picks for Automotive Wiring Diagram

Carmin#1

Carmin by Chuan Nguyen Van

Automotive Wiring Diagrams
Editor's Choice
🔍 Reference
4.3😐(175 ratings)
FreeAdsIn-App Purchases
Carmin screenshot 1
Carmin screenshot 2
Carmin screenshot 3
Carmin screenshot 4
Carmin screenshot 5
Carmin screenshot 6

Access a comprehensive library of regularly updated automotive electrical wiring diagrams for car repair and study. Includes videos and technical documents for research and reference.

What We Love

  • 📚 Comprehensive vehicle diagram database
  • 💰 Free version available with good content
  • 🎯 Helpful for car diagnostics and repairs
  • ⚡ Quick access to wiring information

Room to Improve

  • 📺 Excessive advertisements in free version
  • 🐛 Frequent app crashes and instability on iOS
  • 🚫 Limited vehicle coverage (missing years and models)
RepairSolutions2#2

RepairSolutions2 by Innova Electronics

Strong Contender
🔧 Utilities
4.8😊(33K ratings)
FreeIn-App Purchases
RepairSolutions2 screenshot 1
RepairSolutions2 screenshot 2
RepairSolutions2 screenshot 3
RepairSolutions2 screenshot 4
RepairSolutions2 screenshot 5
RepairSolutions2 screenshot 6

This app provides comprehensive vehicle care and repair information for car and truck owners, DIYers, and technicians. It offers diagnostic capabilities with compatible OBD2 scanners and a vast database of verified fixes from ASE Master Technicians. Users can also access free vehicle maintenance information and schedule repairs.

What We Love

  • 👍 Easy to use
  • 🚀 Efficient and fast
  • 💡 Helpful diagnostic features
  • 🤑 Good value for money

Room to Improve

  • 🐛 Connectivity issues
  • 🔍 Limited functionality
  • 🕰️ Slow app performance
Wiring Harnesser#3

Wiring Harnesser by Clinton Flowers

Wiring Reference & Documenter
Worth Considering
📊 Productivity
4.7(3 ratings)
Free
Wiring Harnesser screenshot 1
Wiring Harnesser screenshot 2
Wiring Harnesser screenshot 3
Wiring Harnesser screenshot 4
Wiring Harnesser screenshot 5
Wiring Harnesser screenshot 6

This app helps technicians document and reference electrical wiring for projects. It allows users to input connections, view connector details, and navigate through diagrams. Users can also upload images and convert wire gauges.

More Automotive Wiring Diagram apps to explore

4
Xm Diagrams
Xm Diagrams
Xm Diagrams
by Tramontana Szamitastechnikai Korlatolt Felelossegu Tarsasag
Free

Access detailed automotive information for the Citroën Xm, including schematic diagrams, wiring layouts, and technical data. Features include an ORGA calculator, error code readouts, and a fuse voltage drop calculator.

Schematic diagrams and wiring layoutsWiring harnesses informationEngine, fluids, and filter data
🔍 Reference
(1)
free
5
ALLDATA
ALLDATA
ALLDATA
by Alldata LLC
Free

Access comprehensive OEM automotive repair and diagnostic data on your mobile device. Streamline inspections with photo documentation and generate detailed reports. Identify vehicle issues efficiently with built-in diagnostic tools for faster customer approvals and increased productivity.

OEM repair proceduresDiagnostic trouble codes (DTCs)Technical service bulletins (TSBs)
💼 Business
(37)
subscription
6
FindPigtails
FindPigtails
FindPigtails
Right connector, right price.
Free

Easily find the exact automotive connector you need from a vast catalog. Use intuitive reverse image matching or search by vehicle details. Get expert support via call, chat, or email.

Search by vehicle make, model, functionReverse image matchingExtensive connector catalog
🛍️ Shopping
(11)
ad-supported
7
WireGo
WireGo
WireGo
Circuit Simulator
Free

This app provides a realistic electrical circuit simulation experience for learning and design. It features an extensive component library, intuitive drag-and-drop controls, and smart error detection for both household and industrial circuits. Learn, design, and test circuits safely and efficiently on your mobile device.

Real-time component simulationDrag-and-drop circuit designExtensive component library (100+ items)
🔧 Utilities
(9)
freemium
8
wire-rvrcityai
wire-rvrcityai
wire-rvrcityai
Wires
Free

This app provides vehicle owners and DIY enthusiasts with instant access to wiring diagrams and instructions for installing aftermarket products. It supports all makes and models, ensuring accurate and reliable information for car, truck, and SUV modifications.

Instant vehicle wiring information accessAccurate API-driven dataSimple and easy-to-use interface
📚 Education
(2)
free
9
OBD2 Car Scanner - EOBD Facile
OBD2 Car Scanner - EOBD Facile
OBD2 Car Scanner - EOBD Facile
Torque ELM327 Diagnostic Tool
Free

Transform your smartphone into a professional car diagnostic tool. Read and clear engine fault codes, monitor real-time sensor data, and perform advanced diagnostics without a mechanic. Supports a wide range of OBD2 compliant vehicles.

Read and clear engine fault codesMonitor real-time sensor dataTurn off check engine light
🔧 Utilities
(4.9K)
free with in-app purchases
10
Advance Auto Parts
Advance Auto Parts
Advance Auto Parts
Car, Truck & Motorcycle Parts
Free

Easily shop for car, truck, and motorcycle parts, tools, and accessories. Find the right parts for your vehicle, track orders, and locate nearby stores. Access exclusive deals and DIY resources.

Vehicle part search by year, make, model, or VINSave vehicles to a personal garageSecure checkout with multiple payment options
🛍️ Shopping
(119K)
free with in-app purchases
11
1A Auto: Parts & Repair Videos
1A Auto: Parts & Repair Videos
1A Auto: Parts & Repair Videos
Your source for DIY car repair
Free

This app provides extensive video guides and written instructions for automotive repair and diagnostics. It helps users of all skill levels identify and fix car problems with detailed tutorials searchable by vehicle specifics.

23,000+ auto repair and diagnostic videosSearch by year, make, and modelDiagnose vehicle issues using senses
🛍️ Shopping
(83)
free
12
eBay Motors: Parts, Cars, more
eBay Motors: Parts, Cars, more
eBay Motors: Parts, Cars, more
By enthusiasts for enthusiasts
Free

Discover a vast selection of vehicle parts, accessories, and vehicles to buy and sell. Manage your car's specifications, ensure parts fit with Fitment Finder, and connect with a community of auto enthusiasts. Secure payment and shipping options are available.

Buy and sell vehiclesShop for parts and accessoriesMy Garage for vehicle specs
🛍️ Shopping
(47K)
free
13
AutoZonePro Mobile
AutoZonePro Mobile
AutoZonePro Mobile
Parts Ordering for the PRO
Free

Easily identify vehicles and order necessary parts with this professional tool. Features like VIN scanning and license plate decoding ensure order accuracy and speed. Access a full catalog and local store inventory to get the right parts quickly.

VIN scanningLicense plate decoderFull parts catalog
💼 Business
(8.7K)
free
14
Electrical Wiring Simulator
Electrical Wiring Simulator
Electrical Wiring Simulator
Practice Anytime, Anywhere
Free
$19.99 | 100% OFF

Practice real-world electrical wiring skills with interactive, step-by-step simulations. Learn load control, parallel/series wiring, and troubleshooting without tools or risk. Ideal for students and aspiring electricians.

Step-by-step simulationsReal-world wiring practiceLoad control and switching
📚 Education
(82)
paid
15
Automotive News
Automotive News
Automotive News
Automotive News
Free

Stay informed with 24/7 breaking news and in-depth analysis of the global auto industry. Access articles, podcasts, and videos, with options for unlimited content for subscribers. Keep up with the latest in retail, manufacturing, design, technology, and opinion.

24/7 breaking news coverageIn-depth analysisSave, share, and search articles
📡 News
(1.2K)
free with in-app purchases
16
ASE Automotive Test Exam Prep
ASE Automotive Test Exam Prep
ASE Automotive Test Exam Prep
ASE A Series, G1, L1, L2, L3
Free

Prepare for ASE certification exams with a personalized study plan. Practice with over 1700 questions, track your progress, and compare your scores to the community average. Aim to pass your ASE exams with confidence on your first attempt.

Personalized study plan1700+ practice questionsTrack strengths and weaknesses
📚 Education
(656)
free with in-app purchases
17
Electric Toolkit - Calculator
Electric Toolkit - Calculator
Electric Toolkit - Calculator
Electrical Wiring Diagrams
$5.99

This app provides a comprehensive collection of electrical wiring diagrams and calculators for home projects. It includes various switch and fan wiring configurations, outlet diagrams, and essential calculators for grounding, circuit breakers, and voltage drop, adhering to NEC standards.

3-way switch wiring diagramsCeiling fan wiring diagramsGFCI wiring diagrams
🔧 Utilities
(282)
free
18
CarParts.com
CarParts.com
CarParts.com
Quality Parts. Priced Right.
Free

Access over a million auto parts for your vehicle anytime, anywhere. Ensure perfect fitment with a vehicle selector and find specialized parts for European cars and off-road vehicles. Offers flexible payment options and fast shipping.

Guaranteed FitmentJC Whitney Performance HubCarParts Euro for European vehicles
🛍️ Shopping
(22K)
free with in-app purchases
19
ThinkDiag+
ThinkDiag+
ThinkDiag+
by THINKCAR INC
Free

This app provides professional-level vehicle diagnostics, offering features like reading/clearing fault codes, data flow analysis, and special maintenance functions. It supports a wide range of car brands and allows users to subscribe to specific diagnostic software. Connects via Bluetooth to your smartphone for intelligent vehicle analysis.

OE-level diagnostic functionsFull OBD II diagnosisSpecial maintenance functions
🔧 Utilities
(4K)
free with in-app purchases
20
OBD Fusion
OBD Fusion
OBD Fusion
OBD2 scan tool & diagnostics
$9.99

This app connects to your car's OBD2 port via a compatible adapter to read vehicle data. Monitor fuel economy, clear check engine lights, and create custom dashboards for real-time diagnostics and performance tracking.

Read and clear OBD2 trouble codesCustomizable real-time dashboardsEstimate fuel economy
✈️ Travel
(123)
free with in-app purchases