If the cables were provided we do not install those except on promotional sponsored pros. If they were ordered and graphs were not installed at the factory, we do not install the cables. Those would be dealership installs. The Transducer is most likely there in the sump area. We’ve not ever seen one missed in decades as they have been a standard item for decades.
These should be quite able to be installed by your dealership and not require a trip to the factory. No matter who missed the order of the cable and drawing, it’s not that difficult and the dealership should have prepped the boat for delivery.
At this point it’s about the consumer.
BCB