PAC Audio SWI-CAN2 CANBUS Steering Wheel Control Add-On Interface Type: Replacement Interface Specifications: The SWI-CAN2 module MUST be used in conjunction with another SWC module such as the SWI-X, SWI-JACK, SWI-PS or the SWI-ECL2 The red wire on the SWI-CAN2 is an accessory OUTPUT. Damage may occur to the module if this wire is used as an accessory input. 2006 BMW 3 Series: Compatible with the sedan only; not compatible with the coupe. The coupe does not have the necessary CAN bus signals. Parts: 1 year limited Labor: 1 year limited