Electrical problem
1989 BMW 325 4 cyl Two Wheel Drive Automatic 199999 miles
----------------------------------------------------------------
i have an own manual but no fuse layout, do you have a fuse box legend or know what fuse # 20 is?? the ac stopped blowing and i found a blown fuse but when i replaced it it blew straight away.

Fuse 20 controls the air conditioning and probably means the magnetic clutch is shorted and will require replacement. If you disconnect the clutch and reinstall the fuse and it doesn't blow, the issue is a bad magnetic A/C compressor clutch.