65 Formula S tach mounting ?

Thank You at least I know what to look for.
Begin the tach removal process by removing the instrument cluster first. Believe me, you will find that necessary. Also, removing the headlight switch and wiper switch will make getting to the 4 attachment nuts easier. Removing the fuse box attachment screw and moving it to the side the helps. Forget trying to see where the nuts are, this is a touchy- feely exercise.
All in all a job that take patience.