Where is the Fuse Box on 1966 Cadillac deville convertible Nov 29, 2016SOURCE: fuse box location I have a '99 Deville. Had the same problem. In the glove box, there are two toggles for Traction Control and Valet. Toggle the Valet one and try the remote on your key or the buttons in your dash. 1966 cadillac deville fuse box diagram - Fixya 2000 cadi deville: one fuse box is located under hood on passengers side above wheel,a black rectangular cover with a red flip down cover on one end,move tabs and raise cover, under cover is a diagram of of fuse locations. remove rear seat and you will find two more fuse boxes diagrams are under these covers also.