Indexed 5 speed thumb shifters

[Ugo51]

Hi guys,

When I was a kid I used to have (actually I still have it, at home) a 15 speed MTB. It had indexed 5 speed thumb shifter, Shimano SIS.
Would the indexing work for all 5-speed freewheels?
In other words, would it work on a vintage road bike?

Thanks!

 

[Jonny69]

This popped up under a similar thread in the road section but I can see it never got answered. Short answer is yes, they should all be compatible.