have tried afew batterys even a monster off a van at work.still no joy

iv run a massive earth lead to the engine and a massive poss lead to the starter. still nothing

yea the engine turns over fine by hand comp is good on all cylinders, timimng is spot on.

when im turning the key its not even trying to turn the engine.its just clicking!!its like a kill switch has tripped but as far as i no rs's dont have a kill switch do they??
does anyone have any wiring diagrams i could borrow to look over or any other things i should be looking at????