Well chucking it down here so not much opportunity to wriggle under the dead Lotus. I have therefore had another go at the electrics inside the cabin. beneath the dashboard is a mass of loose panels, hanging wires and disconnected ducts.  I suspect a disembowelled cyberman may be trapped there! I am lacking a RHS underdash panel which I will need to replace later.

Underdash panel missing on RHS- loose wiring and ducts

Anyway by wiggling wires and reconnecting those the same colour I have now rescued indicator function and one headlamp rises and turns on when switched. Still no other lights or wipers. The driver's window motor works but is very stiff on trying to wind up. I have greased and cleaned and hope this will ease.

Tried to flip up the headlights manually. Only one sealing grommet present. Bad news: winding switches beneath both motors have broken on their spindles and consequently manual raising is very difficult. However moving headlight with one hand whilst turning the spindle did generate movement and  eventually managed to raise both: Good news headlights present in both pods! Other things present too-
Drivers side- one loose piece of unknown plastic trim (not in parts list?) and 1 mouse nest.
Passenger side: abandoned spanner and pair of pliers as well as one mouse nest. Both liberally filled with pine needles. Removed all debris but the passenger side still doesn't work. I will have to take these apart later so found these instructions on removing the pod itself:
" ...to remove the motor - with headlights up, remove 2 clips that hold on black trim. Prise headlamp and unplug. Ease off connecting rod and undo 2 bolts that hold pod on. Unbolt headlamp motor via wheel arch."
 Thank you Lotus excel.net!
Owing to constant rain lowered headlights and retreated!