Headlight Switch Test

Battery voltage should always be present at headlight switch Red wire at terminal "K" (Caprice and Impala SS) or "F" (Roadmaster). With headlights on, battery voltage should also be present at Yellow wire at terminal "E" (Caprice and Impala SS) or "B" (Roadmaster). If voltage is not present at any indicated terminals, check fuse, wiring, and switch.