Can anyone tell me which pins to use for tach signal and speed O e78 ecm..
Originally Posted by sagola11 Can anyone tell me which pins to use for tach signal and speed O e78 ecm.. I do not believe that these exist - E78 only communicates via CANBus. If this is a conversion project, then you will need to purchase gauges that plug into the DLC (OBD-II) Port.