Notes on removing Fuse Box.. - The Ultimate BMW Forum for Jun 12, 2017It's not easy and takes some work. Note that on the fuse cartridges you should probably remove the fuse nearest the latched side, otherwise it will interfere as you push it down and windup popping out anyway. 3. Next use a 13mm socket to remove the nut under the fuse box where I had two red wires attached with a ring connector. Fuse and relay box diagram BMW 3 E36 - fusesdiagram Locate fuse and relay. Identifying and legend fuse box BMW 3 E36.