I can return the information flow details
select Connector_ID, Direction, Connector_Type, t_object.Name, Start_Object_ID, End_Object_ID
from t_connector, t_xref, t_object
where t_xref.Client = t_connector.ea_guid and t_xref.description LIKE '#WC#' + t_object.ea_guid + '#WC#' and t_object.name LIKE '<Signal Name>'
If you wanted the details of where that flow was realized I get
select Connector_ID, Direction, Connector_Type, t_object.Name, Start_Object_ID, End_Object_ID
from t_connector, t_xref, t_xref xref2, t_object
where xref2.Client = t_connector.ea_guid and xref2.description like '#WC#' + t_xref.Client + '#WC#' and t_xref.description LIKE '#WC#' + t_object.ea_guid + '#WC#' and t_object.name LIKE '<Signal Name>'