custom power switch

Hello everyone, I'm planning on doing a custom pc switch that is similar to a racing car Ignition Switch Panel. it requires a little help from an electrician, so I thought why not ask those who are familiar with electricity. To my Electrical engineers or those who are aware of electrical systems...

I bought this 20amp / 12volt rocker switch and I don't know how to connect it to my motherboard. This is my first DIY-anything with electronics so any help is appreciated. Is there a special cable or something I can use?