SECTION 4 ELECTRICAL SYSTEM GROUP 1 COMPONENT LOCATION 1. LOCATION 1 19 21 22 20 23 AIR Switch panel 18 17 1 2 16 3 4 15 5 SEEK MUTE MODE CALL 14 6 VOL 13 7 8 12 11 9 10 900L4EL01 1 Cigar lighter 2 Radio & USB player 3 Haptic controller 4 Horn switch 5 Cluster 6 Breaker operation switch 7 Starting switch 8 Service meter 9 Power max switch 10 Emergency engine stop switch 11 One touch decel switch 12 RS232 & J1939 service socket 13 Fuse & relay box 14 Master switch 15 Machine control unit 16 Seat heater switch 17 Service socket 18 Speaker 19 Lower wiper & washer switch 20 Boom floating switch 21 Air compressor switch 22 Quick clamp switch 23 Central grease lubrication switch 4-1