1940 Oldsmobile Wiring Diagrams
1940 · Oldsmobile · Original historical scans
Original wiring, in one place.
View 2 original wiring diagram sets filed for the 1940 Oldsmobile. Select the diagram or equipment below, then open the original sheets.
Models and applications in these sheets: Custom Eight Cruiser — 90 L-40; Six — 60 F-40 and 70 G-40.
Circuits in this package: charging, horn, ignition, lighting, starting.
View diagram →
View diagram →Included diagrams and original sources
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Six — 60 F-40 and 70 G-40 — National original wiring sheet · 1 sheet
National Service Data — Internet Archive · Original wiring · original leaf 652 -
Custom Eight Cruiser — 90 L-40 — National original wiring sheet · 1 sheet
National Service Data — Internet Archive · Original wiring · original leaf 656
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 Manuals & Literature in The Library.