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I am currently make a project that requires to tap the left / right turn (indicator) signal and reverse signal, is there any information can be shared? Can it be tapped out from the ODB2 port?
No, the OBD II port does not provide any data at all. Just 12v and ground. For my lighted applique I tapped the wires in the back of the car as described in the installation instructions here: Installation - Tesla Lights