As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DESCENDING OUT OF FL 180 WE EXPERIENCED DUAL A/C GEN CAUTION LIGHTS AND CAUTION LIGHTS OF ALL A/C CONSUMERS. RAN E&A CHECKLIST RESET PROCEDURE AND EXTINGUISHED ALL CAUTION LIGHTS. NO OTHER ABNORMALITIES OBSERVED. LANDING UNEVENTFUL. FOUND NR 1 ENGINE NR 2 PROP BLADE AND NR 2 ENGINE NR 4 PROP BLADE DE-ICE WIRE HARNESS OUT OF CONTINUITY. REPLACED BOTH HARNESSES. OPERATIONAL CHECK OF THE AC SYSTEM CHECKS GOOD IAW AMM 24-21-00-710-801. RETURNED TO SERVICE.