Also see the Lucas 3 position light switch: Off, Dim and Flicker. The shop I now work at works on Rolls Royces and Bentleys exclusively. You all really have no idea about the needlessly complex stuff that goes into these cars.
How about brakes that only work while the car is moving? Check.
No connectors for an entire interior wiring harness? Check.
A CV shaft on one side of the rear axle and a conventional U-Joint setup on the other side? Check.
Power door locks which require 5 wires to operate? Check.
All lights wired in series so that when one goes out, they all go out? Check.
Not to mention the typical Lucas tomfoolery that they're all hashed together with. It's a wonder these cars work at all.
FYI, don't forget to check the mineral oil level for the brakes. Adding normal DOT 3 brake fluid will kill the lines and everything they're attached to. Leaking, however, is normal.