Step 2 · Prepare the Mounting Hole

This is the step people usually slow down on. Go finger-tight first, then a quarter turn. No rush — replay the clip whenever it helps.

Locate the spare hole on your sink deck or countertop. This is often covered with a simple metal or plastic cap, or it may house an unused sink sprayer or soap dispenser. If there is a cap, it can usually be pried off or unscrewed from below. If there is an accessory, you will need to disconnect it from underneath the sink first, which may require pliers or a basin wrench. Once the hole is clear, use a rag and a household cleaner to wipe down the surface area both above and below the sink to ensure a clean, dry surface for the new switch.