I am hoping someone can help me with a Targa defrost question.

I have a two stage switch and the rear defrost wiring seems to have two circuits as well. The wiring to the window has a ground and then a red/black wire and a red/white wire.

The window also has three zones. Top middle bottom.

Of course I took this all apart without sufficient pictures and the wiring diagram only shows a single zone/stage defrost layout.

Anyone know how to wire this up?