I ride an R and use an ebay item. You have to mod it BUT they work and imho look good. https://www.ebay.co.uk/itm/12V-MOTOR...0AAOSwP4FaQhV~ There's more expensive ,I know I bought one BUT they are exactly the same.Cheaper one's too.
Top Tip: use threadlock on the lIght/lense bolts and nuts.