S your correct i got A-Star manual from one of my friend.Same connector brown was the tacho signal i found.but my problem is how remove the top dash of ritz. Afternoon i taken my car to a ICE acc shop but he doesn't clearly know how to remove dash and speedo console as they don't remove these for ICE setup.
Only MASS can open it but they won't do it for customer request for these type of setup they don't encourage.
Thinking what to do
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I enquired the material tacho,4 screws,bracket comes around Rs: 1478 cash and its available.