Help with BMW question

I have a 1989 BMW 525 I series the mapping system, power windows, radio and inside dome light are not working, i think it may be a fuse but not sure which
one (i bought the car from a friend and there is no owners manual) or could it be a ground wire problem? I just bought a new battery for it. everything else dashboard lighting, A/C, tail lights and head lights work fine. Has anyone else had these problems? would like imput please
LMH:confused:
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LMH
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On US models, there is a fuse diagram on the underside of the fuse cover.
FloydR
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