Ac and fans don’t work
So there’s no cold air coming out of the panel registers . . . ?
For that matter, it sounds as if there’s no air at all coming out of the panel registers . . . ?
Is the ac compressor even engaging . . . it should engage, even if the blower is faulty
but I’d say the first step is fixing the situation with the blower motor
Check the fuse(s)
If they’re good, use your test light to check for power at the blower motor
If power’s good, check for ground
It’s quite possible the blower resistor pack . . . or maybe some kind of a control module, because a Town Car probably has automatic climate control . . . is faulty
And if the ac compressor isn’t engaging, it’s probably due to a low refrigerant charge