I think we nailed it! Turns out the engine compartment lid-light had shorted and the one left tail lamp and left plate lamp were on that circuit. The tip came from a guy on that other site who wrote from Germany. (I wont' get into which place is better, but I like this one now that I've found it.) Thanks for your responses. FYI I'm a Land Rover Service Director and if anyone has any questions about worlds best oil leaks, give me a shout.
