CHASSIS ELECTRICAL SYSTEM 1 1 1 1 1 1 1 1 2 480 HARNESS ASSY CIRCUIT CONNECTOR EXTENSION SOCKET V V WIRE Chassis Wiring segmented Con t V 1 1 1 1 1 87 72 Ser 10 thru 30 Conv 4 WD V V V 1 Blazer w Tach gauges exc 1 V 4 Spd 8904747 1 V V V V V V J GENERATOR AND FORWARD LAMP V 1 V NOTE 1 When using in place of 8904631 add ground wire between alternator and V reg base tape back any unused leads 1 1 1 63 66 Ser 10 thru 30 w gauges exc V V D D FFC 2985552 1 1 1 1 1 1 1 V 67 Ser 10 thru 30 exc 61 62 V V V1 1 V amp gen D D 6292020 1 1 1 I V 68 70 Ser 20 30 D D 6 cyl exc V 61 62 amp gen 1 1 6295645 1 V V 68 69 Ser 10 thru 30 w 61 62 amp V V 1 gen exc D D V 3942839 1 V V 68 69 Ser 10 thru 30 Blazer exc D 1 D 61 62 amp gen 1 1 70 Ser 10 thru 30 Blazer exc D V V V 1 1 D 1 1 1 V 71 72 Ser 10 thru 30 Conv 4 WD V 1 V V 1 Blazer 8904781 1 Note 1 1 V 83 66 Ser 10 thru 30 exc D D FFC V B V tach gauges 1 1 1 2981808 1 V cover 46 0 L1 1 V 64 66 Ser 10 thru 30 tach 1 1 V V V 1 V 1 1 w gauges exc D D FFC 12985502 1 1 1 1 71 G 10 thru 30 6 cyl exc 61 V V amp V 1 V V V 72 G 10 thru 30 6 cyl 8904801 1 1 71 G 10 thru 30 8 cyI exc 61 1 amp roof mtd ALC V 1 71 V G 10 thru 30 8 cyl exc 61 V V1 VV 1 amp roof mtd A C D2 480 1 V 1 1 V V 115D2 480 144D 2 480 V V V V 18302 480 18402 486 16 V V 72 G 10 thru 30 8 cyl V 8904805 1 1 1 V BODY WIRING V V 1 V 70 Ser 10 20 Sgl Unit 1 VV 71 72 Ser 10 20 Conv 4 WD Sub 6299598 V 1 1 V 1 V V V 71 G 10 thru 30 V 6299681 1 V 67 70 Ser 10 thru 30 Blazer exc V FFC D D tach oil pressure V 1 V V V 1 temp and ammeter gues V 71 72 Ser 10 thru 30 Conv 4 WD V I 1 V 1 V exc FFC tech gauges 62190457 V 1 1 V V CIRCUIT inst cluster printed wiring 1 V VV 1 V 9 744 67 72 Ser 10 thru 30 w tech exc D 1 V 69 70 Blazer w tach L 1 1 V 1 6290459 1 1 CIRCUIT inst cluster printed wiring 1 V 9 744 1 L VV 67 72 Ser 10 thru 30 w ammeter oil V 1 V pressure and tempfgauges 1 1 V 1 V V 1 V V 69 70 Blazer w gauges 8290458 1 CIRCUIT cluster printed wiring 9 744 71 M H C 71 72 G 10 thru 30 exc gauges V1 V J 72 M VH C exc gauges 8903084 1 CIRCUIT inst cluster Vprinted wrg V 9 744 V Q 71 72 G 10 thru 30 w gauges V V V 71 72 Ser 10 thru 30 D D exc V 1 V V 1 M H C V 1 V V 1 1 V 1 V 72 M H C w gauges V 8903085 1 inst cluster print wrg 1 1 61 63 Ser 10 thru 30 exc AC gen 2978906 1 EXTENSION front cover 45 0 L 38 72 All 1Blazer 1 8903489 A R WIRE fusible 16 gauge 50 ft coil V V 2 530 1 V 38 72 All Blazer Q 1 8903490 A R WIRE 1fusible 20 gauge 50 ft coil V 2 530 62 66 Ser 10 thru 30 exc V D D 2985556 1 V 1 V WIRE ASSY hdlp 1 62 65 Seri 10 thru 30 exc FFC D D 1 65 66 Ser 10 D D exc deluxe V 1 equip V V V V 11 V 1 66 Ser 10 thru 30 Cab Cowl 2985575 1 WIRE ASSY tail stop and directional J 1 1 V signal lamp front 185 O L V V62 66V Ser 10 thru 30 exc D D 2986766 1 WIRE ASSY tail and stop lamp rear 98 V V 1 I 0 L 1 GM PARTS DlVlSlON GENERAL MOTORS CORPORATION CHEVROLET 72TL V 2 480 2 480 V 1 QV 2 38 1 1 11 REV 5 79 V V I V 1 V V 1