Ignition VESPATRONIC

i have a 1977 vespa p200 with a Ignition VESPATRONIC , i need to order a new wiring loom for it,plus the switches,as it will be a non battery bike now.can someone help me as the last parts i ordered did me no good,as i ordered wiring loom 8611200 and switches 21566900,21566800,and they do not match up.please can some one help me so i can ride my scooter.Thanks