tach check

[Don Walton <dhw@atomic.net>]

Hello all, Has anyone devised a way to check a tach out of  the car such as
hooking straight to the coil and whatever else would be needed for it to
work thereby eliminating the chore of removing and replacing the tach also
helping to see if the wiring or the tach is bad.  I haven't tried anything
myself yet, I thought I would consult the wisdom of the list.  TIA ........
Don Walton in sunny NC