IMyOxygenTank tank = (IMyOxygenTank)GridTerminalSystem.GetBlockWithName("H-Tank");
IMyShipConnector connector = (IMyShipConnector)GridTerminalSystem.GetBlockWithName("H-Connect");
IMyTextPanel tPanel = (IMyTextPanel)GridTerminalSystem.GetBlockWithName("T-Panel");


bool isLocked = connector.GetValueBool("IsLocked");

if ( isLocked ) {
	tPanel.WritePublicText("Connector is locked");
}
else {
	tPanel.WritePublicText("Connector is unlocked");
}