ELECTRICAL SYSTEM KEY DESCRIPTION KEY DESCRIPTION 1 - REAR TAIL AND TURN SIGNAL LIGHTS 25 - HORNS 2 - REVERSE WARNING HORN GROUND LEAD 26 - LOW BRAKE PRESSURE SWITCH 3 - REVERSE WARNING HORN [03E17] ELECTRICAL SYSTEM 9015 762 Elevating Scraper PC1520 in SCRAPER, ELEVATING 762