Fog Lights for Jaguar XJS Convertible

[Jaguar CJS]

I recently purchased a low mileage 1995 Jaguar XJS Convertible.  I have a switch on the dash that is for Fog Lights but nothing happens when I engage it.  I also do not see any fog lights mounted on the car and the owners manual reads, 'Fog Lights, if installed'.   My questions is: Were Fog Lights an option on this vehicle and if so. can you recommend a source for fog lights?

Thanks;

 

Jim Norman