With help from Keith Bolas and John Wakefields drawing I have almost completed a rewire. I took J/W recommendation on a maplin rectifier does not take up much space. All the wire and sheathing solder bullets and replica miller and lucas u39 switch came from Vehicle Wiring Products(01159305454) who do a really excellent range of other m/c parts best of all I took a flier on their cheapest 6v horn and it fits perfectly in the original tool box hole how good was that!