Pontiac FIREBIRD 1972 Service Manual page 808

6E-46 1972 PONTIAC SERVICE MANUAL
Fig. 6E-63 Unit Distributor
-
Coil Check
sition of the key-lock cylinder, and "OFF-LOCKED" is
the next position to the left. "ACCESSORY" is located
one more detent to the left of "OFF-LOCKED". Turning
the key to the right of the "OFF" position until spring
pressure is felt will put the ignition switch in the "RUN"
position, and when turned fully to the right against spring
pressure, the switch will be in the "START" position.
With the switch in the "ACCESSORY" (A) position, the
following electrical circuits are activated: stop lights, di-
rectional signals, parking brake warning light, radio,
power windows and seats, back-up lights, and windshield
wipers. In the "RUN" position, the ignition primary cir-
cuit is activated through the resistance wire and the air
conditioning, heater and defroster circuits are activated.
There are six terminals on the back of the switch (Fig.
5E-66). The "BAT" terminals (Bl, B2 and B3), which are
connected to form one common terminal, are connected
to the battery and supply power to the switch. The
"ACCESSORY" terminal "A" supplies power to all of
the accessories except air conditioning, heater and defros-
ter when the switch is in the "ACCESSORY" position.
The "SOLENOID" terminal "S" supplies power to the
solenoid to activate the starter in the start position. This
terminal also bypasses the resistance wire to the coil for
improved starting. The "GROUND" terminal "G" com-.
pletes the test circuit for the temperature "HOT" indica-
tor bulb when the switch is turned to the start position.
DETACH LEADS
Fig. 6E-64 Unit Distributor
-
Pickup Coil Check
VACUUM UNIT
ATTACHING SCREWS
PICKUP COIL
CONNECT GREEN
STRIPE LEAD TO
TERMINAL WITH
GREEN DOT
Fig. 6E-65 Unit Distributor
-
Unit W i t h Shaft Assembly
Removed