eBay
Shopsmith Electric Motor for Mark V and wiring removed from my Mark V Model 520 when I installed the Power Plus upgrade.  This is the original 1 1/8 HP, 110V motor and is used but still runs great.  It includes the wiring and power switch.  Note that the power switch is the newer type that requires a square hole in your headstock - the older ones fit into a round hole.

Happy bidding!