Iv checked all my wiring and all is ok iv mounted my fuse on the scuttle above the batt so should b ok an it is befor the relay. I also think its exces current causing the problem but it's the old wiring that's got the problem not my new stuff, do you think could be a faulty cut out if u say should only cut out due to inertia? I just think if it was the pump then wouldent it blow the fuse on my new loom?

Cheers for the input guys