Most likely a failed blower resistor.
the blower resistor is located on the evaporator housing it is secured by two screws and has a 4 wire harness plug on it easily accessible you will see it as soon as you open the hood
A 1994 Dodge Ram does not have a ballast resistor.
No.
Easy to find. Just look under the glove box. It has an electrical connector and is held in with two phillips screws. Often is just needs a terminal cleaned not replacement.
If the 2002 is like the 2004... Check the bottom passenger side. Unclick and remove the (1/2"x1/2") connector to it. Remove the two screws. The resistor should fall out. Hand tighten the screws back in place so you don't lose them.
Under the dash on the passenger side.
Passenger side under the hood.
the hole dash has to come out . just change mine in a 02 dodge ram 1500.
three screws accesible under dash on passenger side.
How do you replace the heater blower motor resistor on a 1998 gmc serria 1500 p/u
Under the dash, passenger side. It will be the item with four or five wires.Under the dash, passenger side. It will be the item with four or five wires.