V A CHASSIS ELECTRICAL SYSTEM P A 4 A 2 500 REGULATOR BRACKET SCREW NUT Electrical Output see 2 319 for breaker Con t 65 68 Ser 10 D D 3870588 1 BRACKET regulator mtg and horn relay r X Note 5 8 70 G 10 20 6 70 Ser 10 D D 3897893 1 BRACKET voltage mtg I 63 72 All Blazer exc 62 amp 3876129 3 SCREW voltage and current reg assy attaching No 10 24 x 1 w 1119515 58 72 All Blazer 3878130 A R NUT w grommet regulator No 10 24 A 2 510 RELAY ASSY RESISTOR Generator Electrical Output 55 60 All w 1117070 1115841 1 80 amp i 82 All w 82 amp exc FFC 1 63 88 D D 1 1980890 1 RESISTOR regulator relay 10 ohms red paint 2 515 AMMETER GAUGE ASSY INSULATOR RESISTOR ASSY Electrical Output see group 9 748 for tell tale windows 58 58 Ser 3 1 60 84 D D exc 102 W B 1501740 1 60 66 Ser 10 thru 30 PFC 61 68 Ser 10 D D 1501985 1 61 83 Ser 1 0 thru 30 exc D D FFC 1501949 1 i 84 86 Ser 10 thru 30 exc D D FFC 1502803 1 U A 87 70 Ser 10 thru 30 D D 71 72 G 10 thru 30 w gauges 71 72 Ser 10 thru 30 D D exc M H C 72 M H C w gauges 8473038 1 67 70 Ser 10 thru 30 exc D D 71 72 Ser 10 thru 30 Conv 4 WD A vv tach gauges 1503428 1 67 72 Ser 10 thru 30 FFC 6473021 1 GAUGE ASSY ammeter L 67 72 Ser 10 thru 30 exc D D 8430531 1 INSULATOR ammeter 71 72 FFC 6430382 1 INSULATOR ammeter 88 67 D D A 88 70 Ser 10 D D 1981149 1 RESISTOR ASSY shunt 2 525 HARNESS WIRE ASSY Starting lgnition AMMETER TO STARTING SWITCH NOTE 1 Used with rod type accelerator linkage NOTE 2 Used with cable type accelerator linkage NOTE 3 When using models without P G it will be necessary to cut off neutral safety switch terminal splice and tape wires A NOTE 6 May be necessary to remove back up lamp term from ext conn and install in 2965981 conn a and jump neutral safety switch conn NOTE 7 When using in place of 629521 23 it may be necessary to tape back heater blower conn 62 88 Ser 10 thru 30 8 cyl exc A FFC tech ammeter oil press temp gauges 2985533 1 83 66 Ser 10 thru 30 8 cyl exc D D FFC tachometer oil l pressure and temp gauges 6287031 1 84 86 Ser 10 thru 30 FFC 84 88 Ser 10 thru 30 w tachometer i emmeter oil pressure and A A temp gauges exc FFC 2988770 1 84 65 G 10 y 88 G 10 w P G 8290024 1 Note 3 Q 67 68 Ser 10 thru 30 8 cyl exc 8 FFC 8292047 1 88 70 G 10 20 w A T 8 cyl exc ammeter oil pressure and temp gauges 6299513 1 68 70 G 10 20 8 cyl exc gauges 3942853 1 Note 6 88 69 Ser 10 thru 30 8 cyl exc a 398 T H 400 D D 89 Blazer w 4 Spd 8 cyl 70 Ser 30 FFC 8 cyl exc A T f 1 398 70 Blazer w 4 Spd 8 cyl 70 Ser 10 thru 30 w 4 Spd 8 V cyl exc 396 t GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 72TL A REV 5 79 2 41 2 500 2 525