How do you replace a tps for a 1990 Mazda miata?

To replace the throttle position sensor (TPS) on a 1990 Mazda Miata, first, disconnect the negative battery terminal to prevent any electrical issues. Locate the TPS on the throttle body, detach the electrical connector, and remove the two screws holding the sensor in place. Install the new TPS by aligning it properly, securing it with screws, reconnecting the electrical connector, and finally reconnecting the battery. Be sure to check the throttle position and adjust if necessary for proper operation.