i'll probably go from battery positive through a 30 amp fuse, then i will use something like a good quality amp wiring kit cable to the spare wheel well, then t off of the knock relay thats already in there for my trigger wire, fix my 70amp 4 pin relay in the boot and connect the wires up, as for negative side i will probably just earth the pump to the floor, but im no expert im just going off what people have done and this is the conclusion ive come to.