tailgate electric window

[WarWagon454]

so my electric tailgate window is stuck in the down position. The problem is that you cannot access anything, it is all behind the glass. The interlock switch (the one that keeps the window from opening if the tailgate is down) has been jumpered out previously. I guess that I can hook up a battery to the window motor? Does anyone know which wires to power? There are four of them, and if I blow up the window motor(if its not dead already), then i'll have to cut the tailgate. Thanks!