How do you find factory default code on a 95 Lincoln town car?

There isn't a single "factory default code" in the way some modern electronics have a universal reset. The 1995 Lincoln Town Car's security and radio systems used different methods, and retrieving original settings depends on what you're trying to reset:

* Radio: The radio code is *not* a universal factory default. It's a unique code assigned to your specific radio when it was manufactured and linked to your vehicle's identification number (VIN). You'll need the radio's serial number (usually found on a sticker on the radio itself) and your VIN to get the code from a Ford dealer or a specialized radio code retrieval service online.

* Other Systems: There's no easily accessible "factory reset" button or code for other computer systems in a 1995 Lincoln Town Car. Most settings are stored in the car's various electronic control units (ECUs). Any resets would involve sophisticated diagnostic tools and procedures typically only performed by a qualified mechanic or specialist.

In short: If you're having a radio problem, focus on getting the radio code. For other issues, a mechanic with access to diagnostic equipment is your best bet. Simply searching for a "factory default code" won't yield results for this car's systems.