Thanks for sharing!
You could have +12V feed a 7805 to take advantage of its limiting (1 amp short cct.) and o/p this on the terminal block as well.
Your most expensive component will protect your fuse. 
Thanks for sharing!
You could have +12V feed a 7805 to take advantage of its limiting (1 amp short cct.) and o/p this on the terminal block as well.
Your most expensive component will protect your fuse.