1993 GMC Sonoma Owner's Manual - Page 308

Service & Appearance Care Headlights The headlight wiring is protected byacircuitbreakerinthe light switch.An electrical overload willcause the lights to goonand off, orinsomecases to remain off, Ifthishappens,haveyour headlight wiringcheckedrightaway. Windshield Wipers Thewindshieldwipermotor is protected byacircuitbreakerandafuse. If the motoroverheatsdue to heavysnow, etc., the wiperwill stop until the motorcools. If the overload iscausedbysome electrical problemand not snow,etc.,be sure to getit fixed. Power Windows and Other Power Options Circuit breakers in the fusepanel protect the powerwindowsand other power accessories. When the currentload is too heavy, the circuitbreakeropens and closes, protecting thecircuit until the problem is fixedorgoesaway. Trailer Wiring Harness The optional seven-wire trailer wiringharness is protected byan in-line fuse in the battery feed wire. This fuse is near the junction block. See"Trailer Wiring Harness"in the "Features & Controls" section. Fuse Block KO631 Thefuseblock is in the instrument panel on the driver'sside. fuses with a Remove the coverwith a screwdriverand then youcanremove fuse extractor. 6-60