2008 Pontiac G6, Auto Start

Hey guys my daughter bought an easyguard ec002 system autostart pushbutton and pke for 2008 g6 gt coupe been going over everything for couple days down to two issues 1st is tach wire says can be connected to constant 12v or tach isn't there a tach wire at the obd connector? 2nd is the gwr harness gives 3 methods of hookup 1 is a key sense wire which I dont have so down to 2 first is the factory chip immobilizer or gwr wire not sure which one I have or where they would be

Any help would be great wired everything else in just need these 2 items to plug it in to see if it works

Thanks