Front Fog Lights Question

[Manney]

Used my front fog lights for the first time since I bought the car (172 exclusive) last night. Swithed them on but nothing happened, then about a 30 seconds later they came on.

Is this delay normal, or is there a fault?

 

[MikeC]

should be instant

 

[Manney]

Any idea what the problem is, relay maybe!?