Awning light switch

Hi 
Can anyone help me! I know the awning light has worked in the past but I can't remember where the switch is so can't tell if the bulb has gone or if I'm just not switching the right switches! Can anyone help me!
Thanks Mel

Not sure what van you have, but it's almost certainly the Aux button on the control panel.

Yeh sorry it's my first post and I put all that I do in the description but that doesn't seem to show in the post! It's a Gatcombe so I should also have out the post in a different forum! 
Thanks you for your help.