so i have a 528i e12 1979. my car wont turn over or do anything when i turn the key. i just replaced the starter, but still nothing, i tested all my relays and fuses.

only half of my fuse box is working, i swapped all the ones that werent working with new ones, still nothing. i dont know where i should start with this, because im new to the bmw community. so any help, i would really appreciate