Wish I could help. Looked-over the previous year and they don't show that same fuse block with the junctions. As a rule of thumb though, if line voltage posts are fed by a cable from the battery...which I don't see one, then the neutral will also be a cable back to at least the main battery neutral. If fed by or through the system power, that is through the main fuse, then if there is a neutral, it will be through..or be the chassis ground.