For those who are not able to read the Yahoo SD1 forum
message. The linked message mentions an interesting VDP
EFi car which has a number of unusual, but 'factory
fit', features. One of which is seat-belt warnings in both
front seats. The VDP EFi in question is a 'C' registration.
Now, I thought the seat-belt warning was only on one
of the front seats, not both (not sure which one though,
the drivers?). Looking in my parts guide, only ONE seat
switch is listed, but strangely TWO seat switch wiring
harnesses! The parts guide also seems to indicate the
seat belt warning sensors were only included to VIN
287463 build May 1983. This sounds about right as I
believe the SD1 seat belt warning feature was deleted
when front seat belt wearing became compulsory in the UK
(January 31st 1983).