4wd indicator light switch location?

[CummInGetMe]

The four wheel drive in my 1999 Suburban is having intermittent problems.  The switch in the title is the cheapest of three likely culprits.  (The encoder motor and front axle actuator are the other two likely problems). 

 

I have looked all over the transfer case and cannot find where this switch goes!  It's a push button autotrack NP246 transfer case.  I found the front and rear shaft speed sensors, as well as the vehicle speed sensor and encoder motor.  Does this particular transfer case even have this switch?  Any help would be appreciated.  Thanks.