For BMW 1 Series E81 E82 E87 E88
For BMW 3 Series E90 E91 E92 E93 
Please note:The product we sell does not include the fiber optic box; please purchase it separately.
1. If your vehicle's original power interface is the same as shown in this diagram, you will need to purchase an additional fiber optic box.
2. If your vehicle is equipped with a BOOSE system, you will need to purchase an additional fiber optic box.
3. The original vehicle's main unit does not have a power interface on the back, only a fiber optic box interface; therefore, an additional fiber optic box needs to be purchased separately.
If the device does not have a fiber optic cable, simply connecting the amplifier cable will allow it to produce sound normally.
Original car connector, no vehicle cutting required.
The following images are the original, unmodified images.
