Usually they come on when you press the button for the heated rear window.
I would say the biggest size rims you should put on a 1994 Chrysler Fifth Avenue or a New Yorker would be 20 inch rims.
Unlock the doors with the key.
It is inside the fuel tank.
In the glove box
Sounds like a stuck blend door.
Unlock the driver door with the key.
It does not have a mass airflow sensor.
power distribution behind battery.
Mopar ATF +4
It is screwed into the exhaust manifold on the rear of the engine.
Look in the glove box. That would be my best bet
depending on any additions... Roughly 3,600 pounds