Radio wiring diagram (part 1 of 3) showing ground points, connectors, and circuit connections for smart fortwo 450/451/452/454 chassis.

Radio wiring schematic with labeled grounds, USB connector, door separation points, antenna connector, and CAN bus circuit.

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See all Electrical figures for the Fortwo (450), 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.