Need diagram of fuse box placement on 1989 Chevy caprice Jun 01, 2012Need diagram of fuse box placement on 1989 Chevy caprice classic. 305 v-8. - Answered by a verified Chevy Mechanic 1989 Chevy Caprice Fuse Box: Interior Problem 1989 Chevy wwwpros›Chevrolet›Caprice›Electrical›Fuse Panel1989 Chevy Caprice Hello. I need to know what fuse to change when the interior lights go out. The dash board light, the overhead light and radio are out. I stuck my car phone charger in the cigarette lighter holder and everything went out.