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

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