Electrical equipment diagram for cars of the models «525», «525A», «528», «528A», «528i», «528iA» since 1977 model year (BMW 5 Series E12)

Wire color designation:

• BL — blue;
• BR — brown;
• GE - yellow;
• GN - green;
• GR — gray;
• RT - red;
• SW - black;
• VI - purple;
• WS — white;
• TR - colorless.

The first letters indicate the color of the wire itself, and the second letters indicate the color of the stripe on the wire.

Cylinder firing order: 1-5-3-6-2-4.

Legend of the electrical equipment diagram