Will a 1995 Lincoln town car climate control unit fit 1993 car?

It's unlikely a 1995 Lincoln Town Car climate control unit will be a direct fit for a 1993 model. While they're similar cars, there were likely changes in the climate control system's design, wiring harnesses, and mounting points between those model years. You'd need to compare the part numbers very carefully, or ideally, consult a parts catalog specific to those years to confirm compatibility. Even if the physical dimensions are close, the electrical connectors and mounting may be different.