Wall Switch for 25 Regulators

I need a simple, reliable way to power-up twenty-five individual 12 V DC regulators from a single point. My plan is to use a standard mechanical wall switch: flip it once and every regulator comes alive together.

Key points to cover
• The switch must be a regular wall-mounted mechanical type—no timers, dimming, Wi-Fi, or other smart features.
• Include an LED indicator that lights whenever the regulators receive power so I have a clear visual confirmation.
• Everything runs on 12 V DC; please choose components rated with comfortable headroom for current and voltage.

What I’m expecting from you
1. A clear wiring schematic showing how the 25 regulators, the wall switch, the LED indicator, and any required relays or distribution blocks are interconnected.
2. A concise parts list with part numbers and ratings so I can order everything quickly.
3. Brief installation notes—anything special I should watch out for when mounting the switch, protecting the LED, or distributing current evenly.

If you can design a neat, safe solution that keeps parts count low and assembly straightforward, let’s get started.