Yes it looks possible
Page 83 of fords Body and Equipment Mounting Manual for the custom says
"NOTE: Only available on Body Control Modules
(BCM) with software version BK2T-14C184-AG
or later. Not available before September 2013.
This is a pin in the BCM that the customer can
connect to and switch between open circuit and
ground to change between Normal Charging and
Conventional Charging modes."
http://www.etis.ford.com/bemm/bemmSelectionForm.do