318 timing and fuel pressure

Thank you! I would like to have the pump run with the key on. So I do not have to drill a hole for a toggle switch. Also plan to run an inline fuse. Any recommendations on where to get the power source from and what size fuse(s) to run?
I got this pump from my uncle. He built a bigger motor and needed more fuel. This has only been ran for a season of drag racing. It is very friendly to my bank account at the moment. So in time can upgrade to a quieter one. Lol