Correct the forward and reverse contactors should not click if the switches do not have power. They still will have one side connected as that is the default position. What's the serial number for this lift. I can get a more accurate wiring diagram with that.
Basically the brake switch needs to be closed for the presence switch to get power, and the directional switches need the presence switch to be closed for them to get power. Basically they are wired one after another.
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