what are the connections on a AEC 400 cdi unit ?

there are eight connections marked v 3 2 1 g w b r its from a peugeot speedfight 100 cc the wires have been cut .i think r is high voltage from alt b is the ht coil w is pulse and g is ground v is 12 volt 1 2 3 i dont know two of them go to the immobiliser and i think the other is ground can someone help