Your AutoLamp Sensor is probably fine..Maybe a little dirty, but probably fine..
Before I would go through the trouble of removing it from the dash..I would take a q-tip with some alcohol on it, and clean the "eye"..
It's probably covered in dust, and who knows what else..Therefore it thinks it's night outside, and keeping your lights on all the time..
After you've cleaned the "eye" of the sensor..If you find your lights still remain on during the day with AutoLamps turned on..
There is an adjustment you can make..
You have to remove the AutoLamp Sensor in order to make any adjustments to it though..
It's held down by 2 screws underneath the dash bezel on the passenger side of the dash..
You can see in this pic how the adjustment works:
It can be turned either way with a small screwdriver..
Now there is that rare chance you need to replace the AutoLamp Sensor because it doesn't work..
The bad news is the actual AutoLamp Sensor is obsolete, and is not available aftermarket..
The Ford Part Number for it is: (F4LY-13A018-A) or (F4LY13A018A)
You can find a used one in any 94-96 Lincoln Mark VIII..As well as any 94-97 Thunderbird/Cougar that came equipped with AutoLamps..