Does anyone know if the mondeo or focus' cruise control needs a speed signal? I'm looking to retro fit cruise control to my Ka, I know a Vauxhall CC will not work without a speed signal, does the Ford CC need it? Does anyone know of a system (don't care about the manufacturer) that has a setup that does not require a speed signal and have a wiring diagram for and is freely available? (read cheap!)

Cheers