How to connect the switch wire of electric hoist? Urgent need!

In fact, it is the same as the switch wiring of toothless saw. As shown in the figure:?

The reversing of electric hoist is to switch two heads. Open the cover of the new switch and you should be able to see six contacts. You must have a multimeter to make sure that the two points are connected when you press the green key. When you press black keys again, those two points are connected? You have to be an electrician anyway.