Wiring Diagrams
Browse complete, OEM-accurate wiring diagrams for hundreds of car brands and models — from Toyota to BMW, Ford to Hyundai.
No more searching unreliable forums or paying for workshop subscriptions.
Free on iOS & Android
Car Wiring Diagrams
at Your Fingertips
AutoWire gives mechanics, enthusiasts, and everyday drivers instant access to OEM wiring diagrams, fuse box layouts, torque specs, and guided electrical fault diagnosis — all offline, for hundreds of car brands.
Free to download · Works offline · iOS 15+ & Android
The Problem
Car wiring is complex.
Finding accurate diagrams shouldn't be.
Automotive wiring diagrams are essential for any electrical repair — but they're typically locked behind expensive workshop subscriptions, scattered across unreliable forums, or buried in physical manuals that get lost in the glovebox.
Without accurate wiring information, even simple electrical faults become guesswork — costing time, money, and sometimes causing further damage to the vehicle.
The Solution
AutoWire puts the right information in your pocket
- OEM-accurate wiring diagrams for hundreds of car models
- Fuse box layouts with amperage ratings, clearly organised
- Symptom-based fault diagnosis — no scanner required
- Torque specs and fluid types for confident servicing
- Works fully offline in the garage or workshop
Features
Everything you need under the hood
AutoWire combines the reference tools every mechanic and car enthusiast needs — in a single app, available offline.
Fuse Box Layouts
Find fuse locations and amperage ratings instantly. Know exactly which fuse controls which circuit before you start work.
Stop guessing and avoid blowing the wrong fuse.
Smart Diagnose
Walk through a guided, symptom-based decision tree to identify the source of an electrical fault — step by step, without specialist tools.
Narrow down the problem before spending money on repairs.
Torque Specs
Look up the correct torque values for every bolt and component. Tighten to spec, every time, without carrying a paper manual.
Prevent over-tightening damage and warranty-voiding guesswork.
Fluid Specifications
Check oil grades, coolant types, transmission fluid specs, and OEM part numbers — all in one place, before you buy.
Use the right fluid the first time and avoid costly mistakes.
My Garage
Add your vehicles, log service history, and set maintenance reminders — so you always know when the next oil change is due.
Stay on top of your vehicle's health without spreadsheets.
How It Works
From install to answer in under a minute
Select Your Vehicle
Choose your car's make, model, and year from hundreds of supported vehicles.
Browse or Search
Open the wiring diagram section, fuse box layout, torque specs, or fluid guide you need.
Diagnose or Reference
Use Smart Diagnose for fault-finding, or reference the exact diagram or spec for your repair.
Work with Confidence
Follow OEM-accurate information to complete your repair correctly — online or offline.
Supports hundreds of brands, including
ToyotaHondaFordBMWMercedes-BenzAudiChevroletHyundaiMazdaLexus+ many more
Who It's For
Built for anyone working on a car
Home Mechanics
Wiring schematics are impossible to find without a workshop subscription.
With AutoWire: Access the exact diagram you need before touching a single wire.
Professional Technicians
Switching between multiple manuals slows down the job.
With AutoWire: Pull up fuse ratings, torque specs, and fluid types in seconds on your phone.
Car Enthusiasts & Builders
Adding aftermarket parts without knowing the OEM wiring risks damage.
With AutoWire: Reference the factory wiring before any modification.
Everyday Drivers
A dashboard warning light appears and you don't know what to do.
With AutoWire: Use Smart Diagnose to understand the problem before going to a mechanic.
Guides
Learn before you wrench
Step-by-step guides on car wiring, fuse finding, electrical diagnosis, and more — written to help you work confidently.
How to Read a Car Wiring Diagram
Understand wiring diagram symbols, colour codes, and circuit layouts — a practical introduction for beginners and experienced mechanics alike.
Read the GuideHow to Find Your Car's Fuse Box
Step-by-step guide to locating the fuse box in any vehicle, reading the fuse chart, and identifying a blown fuse safely.
Read the GuideCar Electrical Fault Diagnosis: A Step-by-Step Guide
How to systematically trace and diagnose a car electrical fault — from symptoms to circuit, without a workshop scanner.
Read the GuideCar Bulb Size Guide
How to find the correct replacement bulb for your headlights, tail lights, indicators, and interior — explained by position and fitting type.
Read the GuideBest App for Car Wiring Diagrams
What to look for in a car wiring reference app, and how AutoWire compares to alternatives like printed manuals and web forums.
Read the GuideFAQ
Common questions answered
- Yes. AutoWire is free to download on the App Store and Google Play. In-app purchases are available to unlock the full library of diagrams and premium features.
- Yes. AutoWire is designed to work offline, so you can access wiring diagrams and reference data in a garage or workshop without needing a Wi-Fi connection.
- AutoWire requires iOS 15.0 or later. It is compatible with iPhone, iPad, and iPod touch.
- Yes. AutoWire is available on Google Play for Android devices.
- AutoWire supports hundreds of car brands and models, including Toyota, Honda, Ford, BMW, Mercedes-Benz, Audi, Chevrolet, Hyundai, Mazda, and Lexus, among many others.
- Smart Diagnose guides you through a symptom-based decision tree. You describe what you are experiencing, and the app walks you through a series of checks to help narrow down the electrical fault — without needing a workshop scanner.
- Yes. The My Garage feature lets you add multiple vehicles, log their service history, and set maintenance reminders for each one.
- AutoWire's privacy policy is available at fahmimo.github.io/AutoWire/privacy_policy.html, and you can also access it from within the app. Read the AutoWire privacy policy