Hey guys

As the title says, my pasenger side window died a few weeks ago and I bought a second hand motor from Tim (but have not installed it yet)
For the last couple of weeks I've avoided trying the window out in case it got stuck in the down position again.

This morning I gave it a whirl and found the down button makes the window go up and the up button makes the window go down.

Any suggestions as to what's gone wrong??