If I’m not mistaken, it is the same as a winch. The power is reversed to send the window up & down. So in reality you only need a 6 pole momentary switch with a common positive in the middle & the other wires to the window motor. When you press the switch it winds the window down & when you press it the other way it reverses the power & winds it up. It’s a redneck way of doing it but very simple & works. The only thing you don’t have but can easily add are limit switches to stop it in either direction.
Anyway that’s what I’ll be doing in my vs ute & it’ll work for me.