Cadillac Seville (1999) - fuse box diagram - Auto Genius Oct 16, 2016Cadillac Seville (1999) – fuse box diagram. Year of production: 1999. Underhood Junction Block. The front Bussed Electrical Center (BEC) is located in the front of the engine compartment between the windshield washer fluid reservoir and the power steering fluid reservoir (on the passenger’s side). Lift the cover to gain access. Cadillac Seville – fuse box – engine compartment SOLVED: 1999 Cadillac Seville STS. Why won't it shift? - Fixya When tryings to jumpstart my 1999 cadillac seville sts i seemed to have lost all power to the car where do i start looking to solve prolbem Battery , battery cables to starter solenoid and to the under hood power distribution center (fuse box) .