I am currently! having a good look at my engine wiring (Bukh 10hp in Sadler 26). There are two cables coming from somewhere in the engine space and attached by a small screw to the flange of the raw water seacock. I say 'somewhere' because the ends in the engine space are unattached, presumably having parted company with their terminals. One of the cables is about 1.5 mm2, the other about 2.5, and I asssume they are something to do with earthing. Any comments would be appreciated.