Sorry if it's been discussed before, i'm just wondering where is the recognition light on this King Air. Even though i turn the recognition light switch on i can't see any light coming on on the aircraft. Thank you.

They may as well be invisible. If you look at the glass/plastic housing where the nav lights are, they are the lights closest to the "shield" that blocks the strobes from the pilots viewpoint. So you have:

 

(Nav | Strobe | Recog ||)wing(fuselage)wing(||Recog | Strobe | Nav)

They're outboard on the wings as intrigue (name?) pointed out. You will notice their illumination pattern if you switch them on while on the ground at night.

Thank you guys. Obvious at night.