theres a spare, unused grommet on autos (as already said) basically on the drivers side, just behind the intake manifold on the 4 cylinders...but you have a leather shift knob so i assume you have a v6...then it would be parallel with the throttle body...ish. stand kinda next to the turn signal area of the headlight and look at the firewall.
under the car, it would need to be protected from abrasion and stuff like that. the grommet is perfect for 4ga so might as well use it...just be careful of the steering column that the wire won't get rubbed by it.