Driving light switch in cigarette lighter hole?
 

I'm in the process of installing Hella 500 driving lights on my car, but I can't decide where to put the switch. Today I noticed that the switch is about the same diameter and depth as the cigarette lighter that I never use. Has anyone put a switch there? is there a DIY out there somewhere about how to get in there? I'm trying to avoid cutting/irreversibly modifying my interior if possible.