Icom (Japan) and IcomAmerica both have great FAST tech support. I would hope IcomCanada does as well.
But generally one phone
call or email
to them can get that kind of information, along with how to order parts
from them if there's no more convenient source. And a large number of ham radio outlets will specialize in connectors for all sorts of Icom gear
, including the "not really a ham radio" models.(G)
For genuine Molex connectors, the US auto industry also refers to those as "Pack con" meaning "pack connectors" and you may find the common molex types at your local auto parts
store. Just double check the spacing and the pin diameters are the same.