As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 AC GENERATOR CAUTION & L AC BUS CAUTION. ABORTED TAKEOFF AT 90 KNOTS. RETURNED TO GATE. FERRIED FOR REPAIRS. FOUND SHORT IN HARNESS. REPLACED NR 1 AC GENERATOR CONTROL HARNESS. OPS CHECKED GOOD, CAUTION LIGHTS REMAINED UNILLUMINATED. RETURNED TO SERVICE.