2002 Yamaha 4 stroke tachs

[keyscaptain]

I bought a pair of used 115 4 strokes. There was one tach with the set and mode buttons and the second has no buttons. Does the second tach belong to the motors? What am I missing?

 

[rodbolt]

Re: 2002 Yamaha 4 stroke tachs

tach with buttons most likly is a replacement.
tach without is most likly a pre 01 model.
whats the problem.