lomas the great

Hi all ive just bought an sti8 tmic and the surround for under the bonnet.
Its still got the pipe work and the jet in it and i wonted to get it working.
I was going to mount another washer bottle some where and use the pump off that, but i dont no any thing about wiring it up.

I could make it manual but i dont wont to keep pressing the button all the time.
Is it possable to put some sort of relay in the curcit so that when i turn it on it will spray once every few sconds in stead of constantly.
and advise appreciated
cheers