A replacement circuit board to convert a Smiths RVI tachometer to RVC.
download installation instructions RVI-RVC.pdf (Large File)
The board is negative earth and will convert positive earth tachometers to negative earth unless the optional positive earth kit is included.
Fits Smiths/Jaeger RVI
Many tachometers from the early 1960s on not marked with the Smiths Logo
such as UK built Fords
Datsun ( built under licence in Japan)