As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RECEIVED BRAKE ON LIGHT WHILE ENROUTE. PLACARD BRAKE ON LIGHT M-PROCEDURES COMPLIED WITH IAW MEL 3206. FOUND LOOSE CONNECTOR ON EMERGENCY, PARKING BRAKE PRESSURE SWITCH. TIGHTENED AND CLEANED CONNECTOR IAW SWPM 20-50-00. OPC GOOD IAW AMM TASK 32-44-00-720-002-A, MEL ITEM RESTORED.