i need to know what the fuse box and relay diagram look
Go to this site ,is free owner,s manual of your car,,,www.vadengmpp.com/owners-manual/cadillac-deville.pdf.
look in your owners manuel it has both front and back fuses and relay diagrams
Search Cadillac DeVille Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Cadillac DeVille Experts