So I would take the line from my battery positive and bolt the lug end to the 300 amp fuse and then bolt the fuse to the post on the kill switch? Its that simple? The pic I saw on napa website looks like a fuse in middle with lugs to bolt to on each end. Is that the right one?

'72 440 Cuda
11.673 @ 115.91 w/1.663 60'