classic motorcycle forum

i have just acquired an ex-police velocette le motorcycle and I am trying to find information on the radio. It is a white radio and has pye westminster on it and it is 10 channel. the bike was manufactured in 1966. Does anyone know anythinmg about this radio or know where i could fine information about it. I specifically would like to know which is the power input lead as all the leads have been cut but are all still there!

I would like to restore the bike to its original condition.