What is this that punctured the rear of my radiator?

[Irish_Texan]

I noticed this afternoon my truck had some fluid leaking. Further investigation revealed some type of wiring or something had punctured the radiator from the backside. I felt it and it feels like some type of metal or hard bracket that the wiring is attached to. Seems to be connected to a connector directly behind the fan shroud at the bottom.

It's not loose, like flapping around, either, it's stiff and doesn't interfere with the fan.

Any ideas what this is??

Thanks!