Thanks chaps and Stueys (tool)

I've powered up the pump straight through, Toby you mean the terminal screwed in ? That has come off before I know, but it's secure now.
I'll do a bit more devling before a hole saw comes out --
I've got a new push switch just wondered what way to go about wiring it in . new or cobbled to the existing wiring ( somehow)

I'll look at that link. Cheers.