ELECTRICAL SYSTEM - SKIDDER AND GRAPPLE SKIDDER (SERIAL NO. -257645) KEY DESCRIPTION KEY DESCRIPTION 1 - BOOM LIGHTS (GRAPPLE SKIDDER ONLY) 13 - WINDSHIELD WIPER HARNESS 2 - TAILLIGHT WIRING HARNESS [03F22] ELECTRICAL SYSTEM 9015 540B Log Skidder and Grapple Log Skidder PC1524 in SKIDDER, LOG 540B