I installed a 4 pin NEMA 14-50 box in my garage in preparation for receiving delivery of my Y this week. However, as I am looking through the charger kit, it comes with only a 3 pin adapter. Could someone please help guide me on what kind of 4 pin to 3 pin converter I need to buy for this setup to work? I looked on the Tesla site and see a package of 7 adapters, but that feels like an overkill. Thanks in advance!