Since they have lights on them I wouldn't put them up top, it could make it distracting while your driving and depending on your local laws could get you a ticket too.

 

Hmm. Good point.

I like the idea of placing them right below the headlight switch, but the blue leds may clash with the already dim headlight switch.

Behind the steering wheel is hard to reach and you can't see them easily. But that may be the easiest and best place to put them.

 

Just an update. I ended up putting the switches below the headlight switch. I really like them there, easy to access. They are pretty bright. I may dim them with a diode at some point, but for now they're okay.


The leds are actually a dark blue: