where does the speedo cable enter the driver's compartment. Thanks Slime

At the base of the steering column, it runs through a hole in the firewall in most instances.

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1972 Malibu (1 st. car) Project waiting to happen / Team Chevelle # 427 / A.C.E.S. # 1282

And if you don't get the grommet, Slime, mice will inflitrate, as they did my 67 sitting in the garage. Total count 6 dead.