BMW E36 fuse box diagram / bmw-e36 BMW E36 fuse box diagram is not particularly complicated. It is only with half a hundred different fuses and relay switches, which together with the description can be seen below. Relays are managed switches one circuit under the action of the second. Fuses box diagram Fuses are designed to interrupt the circuit if the circuit current reaches a predetermined force limit. This is necessary to protect components and wires from burnout when an excess current flows through them.