Try calling your local BB dealer. They may be willing to help.
Or, your local district's mechanics.
I just walked in cold one day, told them what I was doing, and now have one of their techs cell numbers. He actually came with me to check out my most recent purchase and give it a once over.
It's amazing how friendly the bus community can be!
Use BlueBird's contact us, i asked for a wiring diagram and service manual, had a reply within 24hr asking for my vin and had all relevant manuals in another 24hrs.
If their contact form doesnt get you results pm me and i will give you direct emails to the person who hooked me up