I am currently working on a project to add a second odometer to my vehicle. At this present time I believe it to be a series of pulses, however I do not know the number outputted per mile. Is it possible have the pic determine (perhaps count) these pulses initially so that I may use this number for my project? I don't believe there is a clock signal involved, and do not know the period. Any help provided is greatly appreciated. (And no this isnt a highschool or college project, I just want a second odometer for my car)

Thanks

SR