Simplest way to achieve this is to buy two beepers from Maplins or Ebay and wire one to each side of the indicators completely independently. Locate them in the body work wherever its convenient ( possibly just under the screen ).
Yes.
Only slight prob is they'll be squeaking all the time if you use the hazards switch.
Ergo I'd think about contriving a way to use the opposite lamp as an earth path, that way they remain silent in hazard flasher mode. Requires 2 buzzers + 2 diodes, or could be done with one and a bridge rectifier. But starts getting complicated.
Actually the X10 is the first Piaggio which I didn't do this on because I found the central warning light was quite bright and always within my peripheral vision.
Again yes. Only been caught out once. I think.
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