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Carmin Delivers Professional Wiring Diagrams to Your iPhone

by Chuan Nguyen Van

4.3
IOSReference
This automotive reference app provides instant access to wiring diagrams for mechanics and DIY enthusiasts. Designed to help professionals and hobbyists troubleshoot electrical systems, Carmin puts vehicle schematics directly on mobile devices. The app's extensive database covers multiple manufacturers and model years.

Detailed Review

Carmin serves as a specialized reference tool for automotive electrical systems, filling a niche gap in the mobile app market. Unlike general automotive manuals, the application focuses specifically on wiring diagrams and electrical schematics, making it particularly valuable for electrical diagnostics and repairs. The app's straightforward approach to organizing complex automotive information makes technical data accessible outside traditional workshop environments. The core functionality centers around a searchable database of vehicle wiring diagrams organized by manufacturer, model, and year. Users can navigate through various systems including comfort access, ignition, lighting, and specialized features like BMW's digital key plus. The Pro version unlocks additional content and removes limitations, addressing the needs of professional technicians who require comprehensive access. Offline functionality ensures diagrams remain available in garage environments where internet connectivity may be unreliable. In practical use scenarios, mechanics report using Carmin during diagnostic procedures to trace electrical faults without returning to computer stations. DIY users appreciate the ability to research wiring issues before beginning projects, potentially preventing costly mistakes. The interface presents diagrams in a zoomable format, though some users note occasional display issues with specific vehicle models. Navigation follows conventional automotive repair logic, with systems organized hierarchically for efficient troubleshooting workflows. User feedback consistently highlights the app's value for specific repair scenarios. Reviews indicate satisfaction with the depth of coverage for European and Asian vehicles, though some American truck diagrams receive occasional requests for expansion. The most common feature request involves organizational tools like favorites folders, suggesting users frequently return to the same vehicle diagrams. One review mentions display problems with Ford Mustang diagrams where code appears instead of visual schematics, indicating occasional formatting inconsistencies. Carmin represents a practical solution for automotive electrical work with some room for refinement. The app's strength lies in its specialized focus and growing database, while limitations include occasional display inconsistencies and organizational features that could enhance repeated use. For professionals and serious enthusiasts working with vehicle electrical systems, the application provides genuine utility despite minor interface quirks that may be addressed in future updates.

Key Features

  • Comprehensive wiring diagram database covering multiple vehicle manufacturers and model years, enabling quick access to electrical schematics for repairs
  • Advanced search functionality filtered by make, model, year, and specific systems like comfort access or ignition wiring
  • Pro version offering expanded diagram access and removal of usage limitations for professional technicians
  • Zoomable diagram interface allowing detailed inspection of wiring connections and component relationships
  • Offline access to previously viewed diagrams ensuring availability in workshop environments without internet
  • Regular database updates adding new vehicle models and expanding coverage for existing models

Why Users Love It

Instant access to professional wiring diagrams
Saves time during electrical diagnostics

Perfect for: Automotive technicians, mechanics, and advanced DIY enthusiasts who regularly work with vehicle electrical systems

Screenshots

Carmin screenshot 1Carmin screenshot 2Carmin screenshot 3Carmin screenshot 4Carmin screenshot 5Carmin screenshot 6

Ranking History

Track Carmin's performance in Reference over the last 30 days

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Current Rank

#36

Best Rank

#36

All-time high

Average Rank

#41

30-day average

User Reviews

sunny272727
Mar 25, 2023

Need the wiring diagram for BMW X1 , 2023 - comfort access, this is the feature that is called BMW digital key plus. I bought the PRO version of the app and I need the above wiring diagram urgently. BMW X1 , 2023 - comfort access Need the wiring diagram for BMW X1 , 2023 - comfort access, this is the feature that is called BMW digital key plus. I bought the PRO version of the app and I need the above wiring diagram urgently.

الدائمي
May 2, 2024

I would like you to add a box for favorite cars. For example, I use Japanese and Korean car plans. If I add a box for favorite cars, I can quickly access them without having to search for them from the car list. Note I would like you to add a box for favorite cars. For example, I use Japanese and Korean car plans. If I add a box for favorite cars, I can quickly access them without having to search for them from the car list.

b273
Jul 9, 2021

I need wiring diagrams for a 98 Silverado where can I get them? Please help I need wiring diagrams for a 98 Silverado where can I get them?

karez xalil
Mar 9, 2021

Hope more cars diagrams will be uploaded. I have two cars. One of the is in and other one is not. Thank you so much for your app. Very good Hope more cars diagrams will be uploaded.I have two cars. One of the is in and other one is not. Thank you so much for your app.

art31111
Aug 13, 2024

on Ford Mustang the diagram opens crookedly, incorrectly, the code is displayed instead of the diagram. Mustang on Ford Mustang the diagram opens crookedly, incorrectly, the code is displayed instead of the diagram.

App Details

Developer

Chuan Nguyen Van

Platform

ios

Rating

4.3

Last Updated

11/29/2025