Some more info:
Pin 2: 12V power for backup memory in the ECU.  This fuse is in the fancy fuse box below the steering wheel.  10Amp fuse.

Pin 3: I really don't know what this one does.  I hear it is probably Cruise Control related.  Anybody with a Starion FSM want to prove this one?

Pin 5: 12V power for when the ECU is on.  On the DSM this fusible link was located on the positive battery terminal.  On the Starion this is the "ECI" fusible link wire (bullshit).

Pin 6: The inhibitor switch is what keeps a car with an automatic from starting when it is in gear (that could get ugly).  Actually it could be ugly in a manual too.  That is why cars usually have a clutch switch... and surprisingly the Starion has no such safety device.  You don't even need to push the clutch to start this thing.  Anyways... This should be grounded on a manual transmission car. 

Pin 7: Oil Pressure Gauge.  This works too!  Oil pressure gauges rule!

Pin 10: Hooking up to this will allow you to check ECU codes with the Starion checker plug located above the glove box.  I don't think it will work with ECI scanning tools, but who's gunna prove me wrong?

Pin 12: Temp Sender signal to cluster.  Temp sensor works!

Pin 13: ECU boost level.  Stock boost gauge works!

Pin 14: There is not a VSS in the transmission.  The signal is generated by the cable turning the reed switch in the speedometer.  This generates the signal and sends it to the ECU.  I don't really know what a 1G ECU would do with a Vehicle Speed signal.

What about the fuel pump and the Tachometer?
The fuel pump comes from the ECI control relay.  The tach gauge signal comes off of the coil on the Starion.  It runs up the driver side fender and into the dash.  The DSM tach signal comes from the coil pack and through the ECU.  Its your call to tap in at the coil or at the ECU.  More info in the wiring how-to.

And another thing...
This is all you need to know if you're going stand alone.  How about that shit?