110v Blower motor wiring

Can anyone help with this wiring?
I think this Chinese blower motor was wired incorrectly from the factory, but they’re not being much help.

The wiring continuity from the plug to the switch tones out ok, the switch continuity functions as expected on both poles, but the factory had the wires attached to the motor at the circled location.

If I power it like this, it blows the fuse instantly.
The factory suggested stripping a power cable and attaching it to these 2 motor points. I did and it runs- but throws a pretty heavy spark when plugging it in.

Any thoughts?