funny enough those jumper wires don't look like mine either, I use .2mm red enameled wire and tack it down with clear UV solder mask, like in the picture below.
https://groundedrepairs.com/gallery/photo8.jpgnot that that matters though, for a run that small, those wires aren't going anywhere and really don't have any need to be tacked down assuming they are enameled. I imagine the flux used is also no-clean flux, and there isn't any reason to clean it off other than aesthetics.
what's funny is that my units have a full 2 year warranty that includes fans, so that entire unit itself was likely under warranty when it was pulled from use