To be certain, your best bet is to:
* Consult your owner's manual: This should have diagrams showing the location of major components.
* Use a repair manual: A Haynes or Chilton repair manual specific to your 1999 Chrysler Cirrus will have detailed diagrams and instructions.
* Search online for "1999 Chrysler Cirrus [engine size] ignition coil location": Replacing the specific engine size (2.5L or 2.7L) in your search will yield more relevant results with pictures.
* Look visually: With the engine cool, carefully examine the top of the engine near the spark plugs. The ignition coil is usually a relatively large, black component.
Remember to disconnect the negative battery terminal before working on any ignition components.