Why is is 'What?'
The diagram to the alternator of a 1988 Sedan Deville can be found in the cars repair manual. It can be bought at an auto part store.
The voltage regulator on your 1997 Cadillac Deville, is located on the top of the alternator. Some aftermarket alternators have the voltage regulator, on the back of the alternator.
Inside the alternator.
inside the alternator
you have to remove the radiator and the a/c condenser to pull alternator also cooling fans
INSIDE THE ALTERNATOR
Inside the alternator.
Possibly defective alternator.
you have to remove the radiator and fans and all the covers and then the alternator will be a piece of cake to pull out and replace
The alternator must be removed and replaced from the bottom, as with raising the vehicle high enough to work from underneath "safely".
460.00 dollars