As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 FA REPORTED A BURNING ELECTRICAL ODOR AT THE SAME TIME THE AFT CABIN LIGHTS WOULD NOT COME ON. AFTER LANDING AND AT THE GATE, THE LIGHT CAME ON WITH NO ELECTRICAL ODOR. THE AIRCRAFT WAS GROUNDED. INSTALLED A NEW RELAY FOR THE AFT UPPER LIGHTING IAW WDM 33-22-02. OPS CHECKED GOOD IAW 33-21-03.