I was able to get the plastic connector back in place, and fit the wires into it. Polarity is needed. First time I got the fan running full. Switched the wires and now I think the fan is running normally.

But I don't trust this connection over and time would like to find a replacement hard drive thermal sensor wire assembly.

The plastic part broke for me. Barely putting any pressure on the connector and the thin plastic covering the metal connectors broke and the wires came out leaving the plastic connector in place. I was able to get the connector out without any more damage. Can I purchase a new thermal connector for this? I can't find the part listed anywhere.

In the meantime I'm going to try and get the wires rigged to the board some how. Super glue them to the connector maybe. But I'm not sure if there is a polarity concern. Can the wires go to either pin on the board?