Under the drivers seat.
Inside the transmission...
There are sensors all over the engine, transmission, exhaust, axles, etc.
It does not have a MAF, Dodge uses map sensors.
Inside the pan, passenger side of the valve body.
A 1994 Ram does not have a passenger side airbag.
Dodge does not use Mass Airflow Sensors on it's 1500 trucks.
In the exhaust, on either side of the catalytic converters.
2, Before & after the catalytic converter.
2 sensors
They are on either side of the catalytic converter, passenger side of the vehicle.
There are 4. They are located on ether side of the catalytic converters.
There are speed sensors on the transmission, on the rear axle, and at the front wheel hubs.