Where is the fuse box for a 1986 Chevrolet Caprice Classic? The 1986 Chevrolet Caprice starter relay switch is located in the fuse box. The relay switch is the first large switch on the right hand side of the fuse box. 1986 Chevy Caprice Wiring Diagram. Chevy. Auto Fuse Box 1986 chevy caprice wiring diagram welcome to our site, this is images about 1986 chevy caprice wiring diagram posted by Benson Fannie in 1986 category on Jun 27, 2019.