> Is this an example of "wire wrapping"? Yes > If so what mechanism is actually holding the wire securely around those metal posts(terminals?) The wire is wr

> Is this an example of "wire wrapping"? Yes > If so what mechanism is actually holding the wire securely around those metal posts(terminals?) The wire is wrapped around the posts several times, with no other mechanism. https://en.m.wikipedia.org/wiki/Wire_wrap https://en.m.wikipedia.org/wiki/Wire_wrap has a good close up picture of one connection and a description of the details (including some info on how this forms a reliable connection)