Your '97 engine and specifically located on the driver's side of the cylinder head has only one tap in for the ECTS ( engine coolant sensor) that also serves as your in car temperature gauge.
In your previous '95 engine there were two. One specific to the ECTS and in just on front of the sensor location for the gauge.
There are locations for you to tap in to the head to get your in car gauge to work.
Here is an example:
http://www.saturnfans.com/photos/sho...hp?photo=31566