Alternator wiring in a 1990 Ford truck is faulty, causing high voltage output and engine shutdown when battery is disconnected.

Generic multimeter readings show problems but don't provide wiring diagrams, diagnostic guidance, or step-by-step troubleshooting for specific vehicle models.

Severity

4High

Willingness to Pay

implied

Added

Jun 7, 2026

Workarounds Described

uses multimeter to measure alternator voltage
removes battery negative terminal to test alternator output

Implied Software Gaps

Mobile app with wiring diagrams and guided diagnostics for specific vehicle models
Integrated voltage logging and analysis to identify charging system faults

App Concept

WireWizard Pro

WireWizard Pro is a mobile app that provides model-specific wiring diagrams, step-by-step troubleshooting guides, and voltage logging for automotive electrical issues. It replaces vague multimeter readings with actionable diagnostics, helping DIYers fix complex wiring without guesswork.

Key Features

Vehicle-specific wiring diagrams with color codes
Step-by-step diagnostic workflow based on symptoms
Voltage and continuity logging with timestamped history
Community Q&A and verified mechanic tips

Target Users: DIY car owners and hobbyists repairing older trucks and classic cars

Revenue Model: $4.99/month subscription or $49.99/year with premium features like live mechanic chat

Existing Solutions Mentioned

multimeter

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