A toggle style switch?. Rotary selector?. You need one of these. Take care when drilling - cover both sides with good quality masking tape, screw the plate firmly to a piece of scrap wood, and drill at slow speed with a new appropriate bit.
Blank Telecaster Control Plate - Matt Black
Custom Engraved Telecaster set Control plate + neck plate + control knobs
Blank Telecaster Compatible Control Plate - Import Style
2 Telecaster Control Plates One Standard One Blank
Custom Engraved Telecaster set Control plate set + neck plate
Custom Engraved Telecaster set Control plate set