CF31 MK1 GOBI 2000 GPS only.

CF 31A mk1
GOBI 2000
I want to try GPS only....
Which terminal is best to connect a GPS patch antenna to? Main or Aux?

Will I need any of the wacky GOBI/WWAN software for GPS only?
It's a real Panasonic branded card.

CF31 MK1 GOBI 2000 GPS only.