Here is the original author of this project [https://www.youtube.com/watch?v=mrCiSa91TUQ ] and he was nice enough to share all the parts he used and I based on this to build mine version.

Parts you might need:
Nutone C907 transformer (1)
Omron LY1F-AC12 Relay (1)
100 Ohm 3 Watt Resistor (1)
Wire (I used this 20-Gauge wire but you can use any thermostat wire)
Kyle Switch Plate SPNT6H45 (1)
Cooper Bussmann Fuses and holders  (2)
Solder/Shrink Tube (Might need if you don’t have it already) <== I used to solder the Fuse Holder (since it’s awg 14 wire) and the Relay connection.

Here is the spec diagram I tweak from the original author (Lee Thompson):