tub drain assembly diagram
For related background details, please refer to our report on trailer lights wiring diagram 7 pin.
Overview & Details on tub drain assembly diagram
Further context can also be found in wiring fan light switch.
Bathtub Examples at Charles Bolden blog
Bathtub Drain Plumbing Diagram
Bathtub Design Ideas
File:Clawfoot bathtub.jpg - Wikipedia
Summary
Additional coverage is available on wiring a light with 2 switches.