Smart Fortwo 451 wiring harness groups overview showing main, engine, transmission, and battery harnesses with numbered callouts.

Transparent side view of Smart Fortwo 451 with color-coded wiring harness routing and four numbered callout locations.

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See all Electrical figures for the Fortwo (451), or browse the full figure library. Part numbers and callouts are community-sourced and cross-referenced against the manuals — confirm with your VIN before ordering.