IT IS NOT NECESSARY.
D4P included in a single unit all the connections necessary to connect to vehicle CAN BUS. Also D4P is the only system that incorporates two CAN buses, one for input and one output. Thus D4P is able not only to read information from the vehicle to operate with it, but in some cases, making transparent encodings or add to the existing information. A typical case of this type of connection is VW, SEAT and SKODA, where 2 full bus D4P CAN be used. For this type of connection, we recommend using the Plug & Play Cable appropriate for each vehicle in order to avoid mistakes in the connections.
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