Changeover big plug BMW MULF/TCU on Combox X1 E84 X6 E71 X5 E70 Z4 E89 E90 E6X
You will need this plug to convert your old TCU/MULF conector to Combox. You will have to take wires with pins out of old conector to put in this new plug to be able to connect your new combox. Combox is also required.