Custom Schematic — Single Circuit

A professional wiring diagram for one subsystem — drawn to GM service-manual standard.

What you receive

A print-ready diagram of one subsystem — cooling fan control, fuel pump circuit, charging, ignition/start logic — with colored wires, gauge callouts, connector breaks, splice points, labeled grounds, and a complete pin-by-pin connection table. Delivered within one week; two revision rounds included.

Who it's for

Builders who want a professional plan before they cut wire, and shops that need clean documentation for a circuit they're about to build or already built.

Problems it solves

Replaces the napkin sketch and the "I'll remember what that wire does" approach. Every wire has a color, gauge, and destination on paper before a single crimp — and the car gets documentation that outlives the build.

Time & mistakes saved

Wiring from a real diagram means building once. No re-pinning, no mystery wire six months later, no burned harness from an unfused guess.

Ordering & scope: 50% deposit at order, balance before file delivery. Nonstandard pinout research, OEM module reverse-engineering, and undocumented components may require additional quote approval before work begins.