Britannia Wiring Diagram

[herrbartlet]

Just bought a Britannia and there are problems with the wiring. Does anyone have a wiring diagram they are willing to share? Bristol Cars do not have the info. Many of the installed fuses have a smaller rating to those shown on the 603 diagrams and the relays also have different numbers to the 603,which makes identifying circuits and which relay does what rather difficult and time consuming.