Strange.... It's a very simple job to fit the electric speedo. You just need 3 wires from behind the clocks to the box which are ground, ignition live and pulse then wire up the speedo and away you go. The connectors at the transducer end and the speedo end are available cheaply enough and the actual connections (especially if you are using just the speedo) are simplicity itself and it wasn't a lot of work. I paid £60 for binnacle, speedo, fuel gauge and clock.