Re: Tach with hour meter replacement
It all really depends on the existing tach and 'hour meter', and what you want.
For example some of the early Sea Rays had a clock type hour meter built into the tach. Later models just had a display that took the hour data from the engine computer (PCM). If the existing tach has a clock type hour meter, then you will lose the history unless you keep the old tach to show to possible future buyers. If the tach is just displaying the data from the engine computer, then the hours history does not go away. On Mercruiser engines for example, a tech can read the ECM and tell the number of hours regardless of whether there is a display, or not.
