My '10 FE 390 was delivered with some of the EU/AUS spec wiring & switches in place. Neither the published wiring diagrams nor parts listings for my particular bike are accurate. With regard to the turn signals, judging by the wiring that's in place, compared to the wiring diagrams for the EU/AUS vs. US bikes, it seems only the two wiring harnesses for the flashers are omitted and the main harness is the same.