Wash your mouth out Jim.
Nice car tobyd10. Not all Saab's came with heated seats especially the newer ones when the cost cutting accountants set to. All the same a lot of car for the money. I paid £3300 last August for a 2.2 diesel Vector Sport est 55 reg!!!!
Unless the wiring is already under the seats and behind the switch blanks I think you'll find it hard to retro fit heated seats but....you may be lucky and find the heating pads are already in there?
Someone will be along and tell you for sure.
BTW welcome to the world of Saab and its little idiosyncraces