I'm planning to put an Arduino Due project that has two CAN Buses and i'm planning to connect the first CAN bus (CAN0) to my car's can bus system and only listen and read messages. Then based on a filter, if a certain message is received then transmit that on the second CAN bus (CAN1) which is like a virtual can bus with only 1 device (instrument cluster) connected. I have a drawing below of how i'm planning to link it up so far but need advice and help on how I can add Transient protection...
Transient protection on CANH and CANL on Arduino
Transient protection on CANH and CANL on Arduino