1921 Mercer Wiring Diagrams

1921 · Mercer · Original historical scans

Original wiring, in one place.

View 2 original wiring diagram sets filed for the 1921 Mercer. Select the diagram or equipment below, then open the original sheets.

Models and applications in these sheets: 22, 24 and Series 5; Series 5.

Circuits in this package: charging, horn, ignition, lighting, starting.

1921 Mercer

Historical scan

View diagram →
Original 1918–1921 Mercer Series 5 wiring diagramView diagram →
Series 5 — Vehicle wiringSource: National Automotive Service — Internet Archive
Original 1918–1922 Mercer 22, 24 and Series 5 — Westinghouse wiring diagramView diagram →
22, 24 and Series 5 — Westinghouse — Wells original blueprintSource: Wells' Automotive Wiring Manual (1922) — Internet Archive
Included diagrams and original sources
All Mercer diagramsAll makes and years

Historical scans are shown as published, with original markings intact. Check the year, model and equipment on the source sheet before use. Shared diagrams may appear in several year packages and are counted once in the collection. Need the rest of the manual? Visit the Library.

Original wiring diagram

Open source ↗