you should see a small dome about the size of a dime on the dash somewhere and it will have a cloudy but see-through color.
In the center of the dash at the defroster vent.
The sensor is located under the oval shaped panel on top of your dashboard. Should pull right up and you will see the sensor attached to the bottom of this panel.
The automatic headlamp sensor on a Volkswagen Golf is integrated into a windshield-mounted sensor near the rear-view mirror. It is combined with a moisture sensor to control the automatic windshield wipers.
The Camshaft Position Sensor is located behind the Power Steering Pump.
Replace control unit located under dash usually in the middle section
To repair the automatic headlight sensor on a Ford Explorer, first, check the sensor for any obstructions or dirt that may affect its performance. If the sensor appears clean but still malfunctions, you may need to inspect the wiring and connections for damage or corrosion. If these components are in good condition, consider replacing the sensor itself, which is typically located near the windshield or on the front grille. Always consult the vehicle's service manual for specific instructions and safety precautions.
on the dash
On my 05 Prius the problem was the axle height sensor located near the left rear wheel.
The automatic transmission temperature sensor, on your 1990 Mitsubishi, is located on the top of the transmission. The sensor will have to electrical wires going to it.
The map sensor is located on the intake manifold on a 1996 Olds Achieva 2.4 liter. It is in the center of the intake manifold.
check main pulley area bottom by harmonic balance
It is located behind the harmonic balancer, also called the vibration dampener.