What was found
L SIDE WINDOW OVERHEAT LIGHT ILLUMINATED DURING CRUISE. FOLLOWED QRH PROCEDURE, ALLOWING COOL DOWN TIME. FAILURE MODE REPEATED. GROUNDED - YES. ON THE LEFT SIDE WINDOW HEAT HARNESS FOUND DAMAGED WIRE. INSTALLED 2 EA SENSOR WIRING APS ON CAPT'S SLIDER WINDOW PER AMM 30-41-00-420-801 FIG 802. SLIDER REMOVED THEN REINSTALLED REF AMM 56-12-11/401. COMPLETED INSTALLATION OF L2 WINDOW HEAT HARNESS REF WDM 30-41-12. ACCOMPLISHED WINDOW HEAT OPS CHECK/REPAIR CONFIRMATION, ALL NORMAL PER AMM 30-41-00-710-801.