As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHOWER OF SMOKE AND SPARKS WAS EMITTED FROM THE RUNWAY TURNOFF LIGHT SWITCH WHEN TOUCHED. CB "R LDG AND TAXI LIGHT" POPPED. FOUND SWITCHES S1-9090 AND S1-9091 TOUCHED CONNECTION ON SW1-236 WHICH CAUSED SPARKS AND BURN MARKS. R/R S1-236 IAW WDM 33-42-01. R/R S1-9090 IAW WDM 33-43-01. OPS CHECK OK. CB'S RESET. S1-9091 LT WING & RUNWAY TURNOFF LIGHT.