Finally, the missing link between your muscle car's original, cable-driven speedometer and swapped-in electronic transmission! Measuring a compact 5" x 4.1" x 2.15", the new Electronic Cable Drive, or ECD1001 for short, allows the use of a mechanical-cable speedometer to be used in conjunction with a modern drivetrain which provides only an electronic output. The case is waterproofed, allowing it to alternatively be mounted under the hood, or even inside a fenderwell. Simple calibration with a remotely-mounted switch. Supplied cable is 36" in length.