After replacing starter, battery, and alternator, the battery light remains on and alternator not charging; suspect fuse/wiring issue but cannot find fuse diagram or confirm protection type.

No easily accessible, vehicle-specific electrical diagnostic tool or database that provides exact fuse/fusible link diagrams and test procedures.

Severity

4High

Willingness to Pay

implied

Added

Jun 9, 2026

Workarounds Described

reads online forums for wiring info
manually traces wires from alternator looking for breaks/melted wires
guesses at fuse type based on online research

Implied Software Gaps

VIN-specific wiring and fuse diagram database
Guided electrical diagnostic tool for alternator no-charge issues
Mobile-friendly, interactive vehicle electrical reference app

App Concept

AutoWiring Pro

A mobile app that provides instantly accessible, vehicle-specific wiring diagrams, fuse layouts, and step-by-step diagnostic tests using VIN lookup, so DIY mechanics can troubleshoot charging system faults without guessing or scouring forums.

Key Features

VIN-based instant wiring diagram access
Interactive fuse/relay box maps with photos
Diagnostic flowcharts for common faults (alternator no-charge, battery light on)
Community-verified fixes with upvotes

Target Users: DIY car owners and weekend mechanics working on domestic vehicles (2000-2010)

Revenue Model: $4.99 per vehicle diagram pack or $9.99/month subscription for unlimited vehicle access

Existing Solutions Mentioned

online forumsreading onlinetracing wires manually

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