My bj8 came without a tacho, I am not quite sure how to fit the white wire loop, i see in a picture by Yoda that for a posative ground earthing that the loop is in a clockwise direction, but which of the 2 wires either entering or leaving the loop is the one from the ignition switch? Also it looks as if there is a plastic encapsulator for the wires, is this correct and is there any other bit i am missing here? thanks Saltiga