where is the location of power safety switch for my power locks and windows on 1990 BMW 525i

where is the location of the power safety switch? power window and locks not working and fuse is good.

Asked by for the 1990 BMW 525i
I know of no power safety switch, there are circuit breakers and some relays though. I would go to and get some of the electrical information, like the wiring and power distribution and grounds for the windows and door locks. Then start tracing the problems.