Hi, I've just reassembled the electrical wiring on my 75 US CB200. Everything matched up well except inside the headlight there appears to be an extra brown wire. See attached diagram. The schematic doesn't account for it but it comes from the primary bundle that connects all the way to the rear of the bike. The brown wire seems to be related to the rear brake. Anyone have an idea if I missed something or is this supposed to be that way? It's solid not brown and white.