70 Blazer w 4 Spd 6 cyl exc Tach gauges 6299669 1 21 45 70 Ser 10 thru 30 w 4 Spd 8 cyl exc 396 D D FFC Tach gauges 70 Blazer w 4 Spd 8 cyl exc Tach gauges 8904650 1 15 40 70 Ser 10 20 w T H 350 8 cyl exc Tach gauges D D 70 Blazer w A T 8 cyl exc Tach gauges 70 Ser 30 w A T 8 cyl exc Tach gauges 396 D D FFC 6299764 1 15 00 70 Ser 30 FFC w T H 6 cyl 70 Blazer w A T Tach w gauges 6 cyl 70 Ser 10 thru 30 w A T Tach w gauges 6 cyl 3942817 1 14 80 70 Ser 30 FFC w A T 8 cyl exc 396 70 Blazer w A T Tach w gauges 8 cyl 70 Ser 10 20 w A T Tach w gauges 8 cyl exc T H 400 I 70 Ser 30 w A T Tach w gauges 8 cyl exc 396 3942818 1 NOTE 4 When using on models without P G it will be necessary to remove 18 gauge dark green wire with white stripe from its connector and instead use 2965981 connector listed in group 2 530 also cut off neutral safety switch terminal and splice and tape 12 gauge wires together NOTE 3 When using models without P G it will be necessary to cutoff neutral safety switch terminal splice and tape wires NOTE 5 May be necessary to cut off idle sol term and tape lback wire NOTE 6 May be necessary to remove back up lamp term from ext conn and install in 2965981 conn 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 TRANSMISSION OVEFIDRIVE 67 69 Ser 10 3945878 1 11 90 65 69 Ser 10 exc 4 WD D D 2985594 1 2 85 WIRIE ASSY extension 68 69 Ser 10 thru 30 Cab exc 4 WD 6291578 1 2 00 WlRlE ASSY str mtr to junction blk fusible link j 1971 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATION P A 31 REV 6 71 2 53 2 525 2 525