To be certain, I'd recommend:
* Consulting your owner's manual: It should have a diagram showing the location of major components.
* Using a repair manual: A Chilton's or Haynes manual specific to your 1996 Lincoln Town Car will provide detailed diagrams and explanations.
* Searching online forums: Searching for "1996 Lincoln Town Car air suspension pump location" on automotive forums (like Club Lincoln forums) may yield pictures and tips from other owners.
Remember to be cautious when working near the suspension system. The air lines can be under pressure, even when the car is off.