Need urgent help with the actuator & rear flap button from VW

Moin, I wanted my Vento to open the rear flap in an elektric way, but there are some problems now. Got a Shavedoor actuator and connected it. As a switch I wanted to use the push button from the passat. But my problem is now that I had to guess at the 1st where to go. So the push button has 4 pins in the back which are numbered 1, 2, 4, and one without number. Now my question to the push button, one can give me the exact cable assignment My second problem is now the actuator, because on the one hand it doesn’t show up with me, but pushes and on the other hand it gets so hot that I’m afraid it burns off my disguise. Please, help me quickly, I’m full of despair.