Recently joined the family of Cadillac Owners again, this car rides like no other, I did find a few issues to work, one being the third brake like not getting power. I have ordered a new used light, but in testing the wire plug under the liner on the deck lid I do not see where it's getting power with the key turned on and then brake pedal depressed enough to light up the left and right brake lights. Check the fuse under the hood, 16 or 19, but they seems fine, check the all the fuses under the back seat but didn't find any out. Didn't see crimped wire but will look more for more soon. Is there a relay somewhere I should be checking? Or any other advice.
This is a high mileage but well cared for car.