So I bought one of these and installed it in less than 15 minutes. The instructions were in Japanese and although I didn't need them, I still wanted to see what they said. I scanned the instruction sheet with OCR software and put it through Google Translate and what I found was quite illuminating:
-- Please take care of me as I am not present. If you need a handle stopper Please make the other company negative goods.
-- If installation is complete, there will be no squadrons in the steering wheel handling during the Matsuyuki operation [I think this is a reference to a covert WW2 operation]
-- Please do a check and run on the boat without anything wrong.
-- After checking that there are no husbands, please ride in Japanese.