Location of throttle pedal position sensor 1999 dodge ram 1500 5.9l?

The Throttle Position Sensor (TPS) on a 1999 Dodge Ram 1500 5.9L is located on the throttle body. The throttle body itself is usually situated on the intake manifold, near the air filter housing. It's a relatively small sensor, often with a single electrical connector, mounted directly to the throttle body. You'll need to visually inspect the throttle body to locate it. A picture of your specific throttle body would help greatly if you can't find it.