What was found
LOWER CONNECTION ON MASTER SWITCH CONTAINS TWO TERMINALS, ONE THAT IS NOT USED. THIS CONTACT THAT IS NOT USED IS THE LOWEST ONE ON THE SWITCH AND CAN COM INTO CONTACT WITH THE INSTRUMENT PANEL CAUSING SEVERE ARCING AND POTENTIAL FIRE HAZARD IF HIT WITH NEE OR OTHER MEANS OF CONTACT UNDER THE PANEL. RECOMMENDED CORRECTION: CHECK FOR SATISFACTORY CLEARANCE AT INSTRUMENT PANEL AND INSULATE TERMINAL END FROM CONTACT. POSSIBLE INSPECTION RECURRING AD DUE TO CLOSE PROXIMITY TO FULL PRIMER AND LINE.