physical differences in 35A and 35M dynamos?

[Bob Culver]

Later 35A did not have the resistor and fuse unit on the dynamo. The output wire runs directly to the main unearthed brush so the actual presdent setup is very easily traceable, maybe with a torch and mirror. The field wire disappears delicately into the field winding. Current is much less so the wire may be thinner. If the pack is fitted the fuse should be in the field wire.