Pontiac FIREBIRD 1972 Service Manual page 1286

12-16 1972 PONTIAC SERVICE MANUAL
Open wiring or defective turn signal switch
If test bulb lights when connected to both sides
of purple wire connection in steering column
connector, replace defective turn signal
switch. If test bulb does not light on either
side of the connector, repair open circuit between
fuse and connector.
HAZARD WARNING LAMPS INOPERATIVE
Open fuse (stop-hazard)
*Switch on turn signals. If lamps operate,
replace stop-hazard fuse if blown. If new fuse
blows, repair short to ground. (Could possibly
be in stop light circuit.)
Defective flasher (located on fuse panel) *If stop-hazard fuse is OK, switch on turn signals.
If lamps operate, replace defective hazard flasher
on fuse panel).
Open wiring or defective turn signal switch *With 12 volt test bulb, check voltage at brown
wire in turn signal steering column connector.
If test bulb does not light on either side of
connector, repair open circuit between flasher and
connector. If test bulb lights only on feed side
of connector, clean connector contacts. If test
bulb lights on both sides of connector, replace
defective turn signal switch assembly.
*See turn signal and hazard warning lamp circuit (Fig.
12- 19).
BULKHEAD
CONNECTOR
r TURN SIG. FUSE
FOR VOLTAGE CHECKS CONNECT TO RT. TURN TO LT. TURN
12 VOLT TEST BULB BETWEEN IND. BULB IND. BULB
GROUND AND TEST POINT
BEING CHECKED
CONNECTOR
Fig. 12-19 Turn Signal and Hazard Warning Lamp Circuit