I’ve had some time away from home, and managed to collate all G-STRV’s wiring diagrams into one document, with links to the respective components from the index.
Clicking the image on the left should give an option to download.
By all means use the information to gather your own ideas, but note:
All electrical connections, including Avionic interconnects, have all been ground tested and found to operate correctly. However, no flight testing has yet been carried out!
In other words, it’s not my fault : )