Is fuse 3 fed direct from the battery? Is the 87A contact un-used?  I don't see a Scura diagram among Carl's drawings. Here is a similar year bike where you can't do that because the 87A contact feeds the headlight relay coil' it would flatten the battery. With a small wiring change the headlight relay (22) coil could be fed from the ignition switch (jumper from 30 to 85) with the other end of the coil 86  to downstream of the main solenoid contact instead of to chassis so it