My grateful thanks for all the information on WWII aircraft lighting. A friend at our church model club intends to build a large scale model Avro Lancaster and asked me to help with the lights. After searching many pages, including this one, I found twenty lights, including cockpit, navigator, w/op, navigation, formation, downward signalling, forward signalling, landing/taxy and dambuster spots.
Pending completion of the model, I am building a mock-up with a switch panel and a plan view of a Lanc with all the lights on. Above is a trial assembly of the panel.