Car wiring diagrams: Bmw Wire Gauge, wiring diagram, wire wiring harness, schematic circuit diagram, wiring diagran, wireing diagram, wirring diagram, wiring daigram, wiring diagrams. Wires, schematics,diagrams,wire codes, for German, DIN standard, BMW cars and motorcycles.Installing VDO gauges. From E you can't use any of the existing sensors in your BMW engine. No matter what gauges you a two pin plug or a length of wire..BMW electrical systems WIRING DIAGRAM Temperature gauge . Electric fuel pump . Plug front wire harness section to heater controls.