MAYTAG MSD2656DEB DEFROST CONTROL

Question

I PICKED UP A MSD 2656 SIDE X SIDE AND IT HAD A FREZER MELT DOWN THE DEFROST T-STAT HAD FELL OFF EVAP I NEED TO REPLACE THIS I KNOW BUT WHERE IS THE DEFROST CONTROL AND HOW DO I GET IT IN DEFROST TO CHECK DEFROST SYSTEM OUT