Is it possible you have the wrong fuse (like a 240D fuse) in there? Are the fuses marked as to how many amps they are? Take a look!

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85 300D turbo pristine w 157k when purchased 167,870 July 2025
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked