Help with '03 Saturn for tach reading

I am trying to locate a tach wire for the '03 Saturn L200 sedan.   Anyone familiar with this? Cant get to it under the dash.  Pulled the speedo/odometer housing hoping it would be behind the tachometer-it isn't, the whole housing just plugs into one big harness. Trying to locate the coil, it has  "wireless" spark plugs, basically just two wires from each spark plug, going into a unit with numerous wires in it.  Somebody mentioned the fuel injection wire-how do I locate that?  Any help from anyone with experience with this car (I believe the cavaliers have this same engine as well-4 cylinder ecotec).

Tachometer      NOT pink, brn/wht, or black       ac       ignition control module      Driving a Bagged, Caddied 02 s10