1. Does RS monitor comes as standard on a 275 Nav? If not can you install it? Had a look on the internet but can't tell if it was an option from new?
     
  2. It's not standard, i think it can be retrofitted though.

    If you find out how then i'd also like to know.
     
  3. Will do, its not exactly a necessity but definitely a nice to have
     

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