Model X being delivered end of march. Wife already had Model S and referred me so should eventually we should receive the “award Wall charger”. We are just now finishing up the addition of a garage and will have a 14-50 NEMA installed which would be adequate but since we are getting a free WC anyway I’m trying to find out if the outlet can later be converted to the wall charger. I’ve seen posts and videos about adding a range cord to adapt the HPWC to plug into the 14-50 outlet but can’t find anything about the doing the reverse.