Need fuse box diagram for 91 chevy s10 blzr 4.3 eng - Fixya I need the complete fuse box diagram for the 91 chevy s10 blazer 6 cylinder 4.3 litre. An alarm was added after market with ignition kill. Lost remote. "Backyard mechanic" got truck to start and the alarm horn to disable but my windshield wipers will not work now and the alarm still re-engages itself and has these flashing lights. Chevrolet S10 Wiring Diagram | Free Wiring Diagram Assortment of chevrolet s10 wiring diagram. A wiring diagram is a streamlined standard pictorial representation of an electric circuit. It shows the components of the circuit as streamlined shapes, as well as the power as well as signal links between the tools.