What was found
BWI - FLT 2729 - ON DEPARTURE FROM LGA, EN ROUTE TO TPA, CAPTAIN REPORTED THAT ALL THE FORWARD LIGHT TEST LIGHTS ILLUMINATED WHEN GEAR HANDLE WAS PLACED TO THE OFF POSITION. LIGHTS WOULD NOT EXTINGUISH, SO THE DECISION WAS MADE TO DIVERT TO BWI WHERE THE FLIGHT LANDED WITHOUT FURTHER INCIDENT. NO EMERGENCY WAS DECLARED. ALL LIGHTS DID EXTINGUISH AFTER LANDING. MAINTENANCE FOUND A SHORT TO GROUND IN MASTER TEST CIRCUIT ON LANDING GEAR INDICATION PANEL. REPLACED P2-3 LANDING GEAR INDICATION PANEL. OPERATIONAL CHECK GOOD. (M)