1998 kouki driver's window control doesn't work

[rockqian]

Hello everyone, I just got a 1998 s14 last week, and the window control on the driver's side doesn't work at all, non of the buttons work. But the passenger side is fine. I thought the problem is the switch, so I bought another switch from ebay, and that doesn't work too. I can't hear any click sound or the sound from motor. I searched and found out this is a general problem for s14, but almost all threads are about how to deal with 1991-1995 240sx, I knew the wiring of the power window was changed from 1996, so anyone have idea about how to solve the problem? Thank you!