This product, ECD-200BT-2 Speedometer cable allows the use of a mechanical-cable speedometer to be used in conjunction with a modern drivetrain which provides only an electronic output.. 36” cable available for GM thread-on, GM clip-on and Ford clip-on style speedometers. Powerful motor is quiet enough to mount the module inside the cabin. Waterproofed case can also be mounted under the hood, or even inside a fenderwell. Bluetooth-enabled to sync with available mobile app for stone-simple set up. Supplied programming switch and LED readout make setup easy. This is the replacement part for part # ECD-100-2