Radio wiring diagram part 4 of 4 for Smart 451 premium radio with sound basis system.

Electrical schematic showing radio connector pins, wire routes, and component connections labeled X115 and X39/45.

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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.