Need a 12V 3-leg relay to automatically control radiator fans triggered by the radio's remote line, replacing a manual switch that failed.

Standard automotive relays either lack remote trigger capability or are not easily found with the required specifications (80W, 3-leg, 12V, remote signal detection).

Severity

3Medium

Willingness to Pay

implied

Added

May 12, 2026

Workarounds Described

manually wired fans to a switch that needs to be turned on every time
relied on a patched-together harness for years

Implied Software Gaps

Relay specification search tool that allows filtering by electrical parameters and vehicle compatibility

App Concept

RelayFinder Pro

An online tool and marketplace that helps DIY auto mechanics and technicians find the exact relay by specifying voltage, leg count, power rating, and trigger type. It lists compatible parts from multiple retailers and shows wiring diagrams.

Key Features

Search by electrical specs (voltage, legs, wattage, trigger type)
Cross-reference with vehicle make/model/year
Show wiring diagrams for common applications
Compare prices from multiple suppliers

Target Users: DIY car owners and small auto repair shops working on custom or non-standard electrical installations.

Revenue Model: Freemium with $5.99/month for unlimited searches and vehicle database access; affiliate commissions on parts purchased.

Want to go deeper?

Sign up to save ideas, run AI analysis, and track opportunities in your personal workspace. Founding members get full access.

Join Beta

Solutions (0)

Discussion (0)

No comments yet