The Parameter Wire manager is described in the core interface 'paramWire' .
In the general case, a wire controller can be wired to any number of other wire controllers in two-way relationships. Each wire has a set of information that defines it, accessible using the indexed accessor functions.
Additionally, you can use the subAnim indexing operator as a way to scan down through an object for wire controllers,
Also, you might also find the exprForMAXObject() method useful here to get a MAXScript expression for the parent or parent owner.