It's a rare optional extra it enables the indicators.
Flick it then try start car. £5 says car won't start.
View attachment 30557
View attachment 30558
Could these wires be it?? Or are they for a standard boot light or something.
Have you traced them to here?
Start at the switch bud and work back, the could be wires every where !!
Naw just looked around for anythin suspicious. Don't have time to trace the wires will need to do that a different day