heater CHEVROLET CAMARO 1967 1.G Chassis Owners Manual

ENGINE-ELECTRICAL 6Y-10

circuit. Make absolutely certain all connections in

the circuit are secure.

5.
Do not short across or ground any of the terminals

on the generator or regulator.

6. Do not attempt to polarize the generator.

7.
Do not disconnect lead at generator without first dis-

connecting battery ground cable.

Trouble in the A.C. charging system will usually be

indicated by one or more of the following conditions:

1.
Faulty indicator lamp or ammeter operation.

2.
An undercharged battery (usually evidenced by slow

cranking speeds).

3.
An overcharged battery (usually evidenced by exces-

sive battery water usage).

4.
Excessive generator noise or vibration.

Described below are a series of on-the-vehicle quick

checks which are designed to assist the service tech-

nician in locating troubles within the various components

of the engine electrical system. Additional checks, ad-

justments and overhaul procedures of these components

are also described in the "Charging Systems—Service

Operations Section" and should be referred to as

necessary.

STATIC CHECKS

Before making any electrical checks, perform the fol-

lowing static checks:

1.
Check for loose fan belt.

2.
Check for defective battery. (Refer to Battery).

3.
Inspect all connections, including the slip-on con-

nectors at the regulator and Delcotron.

NOTE: Do not short field to ground to check if

generator is charging since this will seriously

damage the charging system.

SYSTEM CONDITION TEST

This test is used .to indicate the overall condition of the

charging system (both good and defective) and to isolate

the malfunctioning unit if the system is defective.

NOTE: On Corvette models difficulty may be

encountered -when attempting to make the re-
quired test connections at the voltage regulator.

It is advisable to remove the regulator from its

mounting location to perform the necessary con-

nections at the regulator for the following tests

but make sure unit is grounded.

1.
With ignition off, perform the prescribed Static

Checks outlined in this section. Then set hand brake

and shift transmission
into
neutral.

2.
Connect a voltmeter from junction block relay to

ground at regulator base.

CAUTION: Be sure meter clip does not touch a

resistor or terminal extension under regulator,

3.
Connect a tachometer on engine.

4.
Models equipped with Indicator Lamp: Turn ignition

switch on "ON" position and check indicator lamp.

If lamp fails to glow, perform appropriate tests and

corrections (Indicator Lamp Circuit Tests) before

continuing.

Models equipped with Ammeter: Turn ignition

switch to "ACC" with an accessory on and check

ammeter. If ammeter fails to read discharge, check

ammeter circuit before continuing.

5.
Models equipped with Indicator Lamp: If lamp glows,

start the engine and run' it at 1500 rpm or above.

Check indicator lamp. If lamp fails to go out, per-

form appropriate test and corrections (Indicator

Lamp Circuit Test) before continuing.

Models equipped with Ammeter: If ammeter reads

discharge, start the engine and observe ammeter. If

meter fails to move toward charge (from original

position), perform appropriate test and corrections

(Field Circuit Tests) before continuing.

NOTE: At this point a field circuit has been

established and any other problem will lie in

generator or regulator.

6. Turn on high-beam headlights and heater blower

motor to high speed, run engine at or above 1500

rpm (for a few minutes, if necessary) and read the

voltage on meter.

AIR GAP

ADJUSTING NUT

ONLY

ADJUSTING SCREW

(Turn To Adjust

Voltage Setting)

Fig.
6c—Adjusting Voltage Setting

CHEVROLET CHASSIS SERVICE MANUAL

ENGINE-ELECTRICAL-6Y-30

Fig.
2 li—Removing Ignition Switch Nut

4.
Remove heater and/or A/C control panel assembly

retaining screws and push panel assembly from

console.

NOTE: If interference between control panel

and radio is encountered, loosen radio retaining

nuts.

5.
Remove radio control knobs, bezels and retaining

nuts.

6. Disconnect radio wiring harness and antenna lead-in.

7.
Remove radio rear brace attaching screw and re-

move radio from vehicle.
Fig.
231—Switch and Connector Unplugged

8. Remove ignition switch bezel nut using Tool J-7607

and push switch rearward from panel opening.

9. Disconnect wiring connector from rear of switch.

10.
To install, reverse removal procedure.

SPARK PLUGS

CLEANING AND REGAPPING

Clean the spark plugs thoroughly, using an abrasive-

type cleaner. If the porcelains are badly glazed or

blistered, the spark plugs should be replaced. All spark

plugs must be of the same make and number or heat

range. Use a round feeler gauge to adjust the spark plug

gap to specifications (fig. 24i).

Fig.
22i—Unlocking Ignition Switch Connector

Fig.
241—Setting Sfxirk Plug Gap

CHEVROLET CHASSIS SERVICE MANUAL

ELECTRICAL-BODY AND CHASSIS 12-21

2.
Remove ash tray, retainer attaching screws and

retainer.

3.
Remove Air Conditioning distributor
duct'
retaining

screws and duct.

4.
Remove heater and/or Air Conditioning control panel

assembly retaining screws and push panel assembly

from console.

NOTE:
If interference between control panel

and radio is encountered, loosen radio retaining

nuts.

5. Remove radio control knobs, bezels and retaining

nuts.

6. Disconnect radio wiring harness and antenna lead-in.

7. Remove radio rear brace attaching screw and re-

move ra(Jio from vehicle.

8. Remove ignition switch bezel nut using Tool J-7607

and push switch rearward.

9. Disconnect cigarette wiring connector.

10.
Remove cigarette lighter retainer and lighter as-

sembly from console.

11.
To install, reverse removal procedure.
Fig.
35 - Cigarette Lighter — Chevelle

CHEVROLET INSTRUMENTS AND GAUGES

INDEX

Page

General Description 12-21

Service Operations 12-22

Instrument Cluster........................ 12-22

Instrument Cluster Lamps 12-22

Printed Circuit .
* •
12-22

Speedometer 12-22

Speedometer Cable 12-23

Fuel Gauge 12-23
Page

Clock 12-24

Tachometer 12-24

Ammeter . . 12-24

Temperature Gauge 12-24

Oil Pressure Gauge 12-24

Oil Pressure Indicator 12-24

Generator Indicator 12-26

Temperature Indicator 12-26

GENERAL DESCRIPTION

The standard instrument cluster on all models contains

seven circular housings consisting of: a speedometer;

fuel gauge; oil pressure, generator and temperature indi-

cators; right and left directional signal indicators; brake

warning and high beam indicators; and includes a clock

on deluxe models. An optionally available instrument

cluster provides special instrumentation which includes

in addition to the speedometer and clock: a tachometer;

fuel, oil pressure, ammeter and engine temperature

gauges; which replace the standard fuel gauge and indi-

cator lights. The brake warning indicator is relocated

to the tachometer dial face and the high beam and direc-

tional indicators are positioned in the speedometer dial

face.

Instrument cluster removal is recommended before at-

tempting to service the printed circuit and gauges even

though some units may be accessible from behind the

cluster. Limited working space under the instrument

panel increases the possibility of electrical malfunctions

due to poor connections, and damaged or improperly in-

stalled printed circuit. The printed circuit is service-

able but not repairable and requires complete
replacement.

The brake warning light serves a dual purpose. It

functions as an indicator when the parking brake is ap-

plied and also warns if a malfunction (loss of hydraulic

pressure) should occur in the brake system. The two

separate switches, which provide the signal to operate the

indicator, are located at the parking brake support and in

the hydraulic brake line at the master cylinder. Service

of the brake pressure, differential switch unit at the

master cylinder is described in Section 5 of this manual.

All indicator and cluster illumihating lamps may be

replaced without removing the cluster from the vehicle.

The bulbs are installed in plastic holders which lock into

the cluster housing and make contact with the printed

circuit. An instrument lamp is used to illuminate the

ignition switch. A special fibre optic lucite wiring

transmits light from the lamp to the switch.

Regular maintenance is not required on the instrument

cluster or its components other than maintaining clean,

tight electrical connections, replacing defective parts and

keeping the speedometer cable properly lubricated.

CHEVROLET CHASSIS SERVICE MANUAL

10

27

18

1.
To R. H. Door Jamb Switch

2.
To Inst. Pane! Compt. Light

3. To Heater Control

4. Heater Control Lamp

5. To Ignition Switch

6. To Seat Separator Harness Conn.

7. Inst. Cluster Conn.

8. To Directional Signal Conn.

9.
Door Jamb Switch to Light Switch Conn,
Fig.
40 - Instrument Panel Wiring

10.
To Wiper Switch

11.
To Light Switch Conn.

12.
To Gen. and Fwd. LP. Harness Asm,

13.
To Light Switch

14.
Courtesy Lamp

15.
To Dome Lamp Conn.

16.
ToL.H. Door Jam Switch

17.
Gen. and Fwd Harness Conn.

18.
To Paricing Brake Alarm Switch
19.
To Rear Door Jamb Switch

20.
To Fisher Body Conn.

21.
To Stop Lamp Switch

22.
To Back-Up Lamp Switch

23.
To Directional Signal Flasher

24.
To Cigarette Lighter

25.
To Heater Resistor

26.
Directional Signal Flasher

27.
Door Jamb Switch

VIEW
A

VIEW
B

(13700-800)

Fig. 44
-
Instrument Panel Wiring Harness

1.
R.H. Door Jamb Switch

2.
To Instrument Panel

Compartment Light

3. Heater Control Lamp

4.
Ignition Switch Connector

5. Cigarette Lighter

Connector
6. W/S Wiper Switch

Connector

7. Light Switch Connector

8.
L.H.
Door Jamb Switch

9.
To
Body Harness Connector

10.
Parking Brake Alarm

Switch Connector
11.
Directional Signal Switch

Connector

12.
Backing Lamp Switch

Connector

13.
Stop-Lamp Switch

Connector

14.
Flasher Unit
15.
Heater Control Switch

Connector

16.
Heater Resistor Connector

17.
Console Courtesy Lamp

Connector

18.
Neutral Safety Switch

Connector

Fig.
48 - Instrument Panel Wiring Hamess

1.
To Instrument Panel

Compartment light

2.
Heater Control Bulb

3. To Heater Switch

4.
To Directional Signal Flasher
5.

6.

7.

a
To Heater Resistor

To Blower Motor

Connector

To Cigarette Lighter

To Ignition Switch
9.

10.

11.

12.
To Wiper Switch

To Light Switch

To Fisher Body Connector

To Directional Signal

Connector
13.
To Stop Lamp Switch

14.
To Backing Lamp

15.
Fuse Panel

16.
To Dimmer Switch

17-

VIEW A

Fig.
53 - Instrument Panel Wiring Harness

1.
To Glove Box Light

2.
To Heater Control

3. Heater Control Lamp

4. To Cigarette Lighter
5. To Ignition Switch

6. To Instrument Cluster

7. To Wiper Switch

8. To Light Switch

9.
To Directional Signal Switch
10.
To Stop Lamp Switch

11.
To Backing Lamp Switch

12.
Fuse Panel

13.
To Dimmer Switch
14.
To Fisher Body Connector

15.
To Directional Signal Flasher

16.
To Heater Resistor

17.
Directional Signal Flasher

ELECTRICAL-BODY
AND
CHASSIS
12-62

BULKHEAD-

CONNECTOR
HEATER

RESISTOR

PANEL ASM.

12 BRN
20
Y

12 BRN

»-67 MOD ONLY

*45 MOD ONLY
14 PPL

DIRSIG.

FLASHER

20 BRN
'20 LBL

20
P

16 BRN

>20
LG

• 20 PPL

•
14 LBL

• 20
T

.20 OR

-20 DG

20
Y

20
LG

—
20DBL/W.

20
DG

—16 BRN

20 DG

10
OR

TAPE BACK

'10 OR

10 OR/B

18
P

20 BRN

Fig.
105 -
Fuse Panel
—
Chevrolet

CHEVROLET CHASSIS SERVICE MANUAL

ELECTRICAL-BODY AND CHASSIS 12-63

R.H. COURTESY
LP,

(67 MODELS &

16600 ONLY)

•18Y
R. H. DOOR JAMB
SW

(ALL EXCEPT 15300-400)

BK.
NEU.

LP.SW.SAF.SW.

(RJ»JD^

20 OR

20 OR
COMPT

(U*INST. PANEL COMP. LAMP

R-i3r
(ALL EXCEPT 15300-400)

14BRN

18
LBL

18 OR

14 OR

HEATER

CONTROL
LP.

RADIO CONN.

CIG.
LGT

20
P —

4
PPL

20
LG'

14 PPL—

NSOLE

CONN.

(16700-800

ONLY)
CONSOLE

CONN.

(16700-800

ONLY)

12
PPL

14 OR

12 PPL/W

20
GY/B

20 OR

14 OR

20 OR

14 OR

20 OR

20DBL

20 OR

20
GY
INSTRUMENT

CLUSTER

-ILLUM

-ILLUM

-R.H.
S

-GEN

-OILP

-ILLUM

-ILLUM
20 GY

20 GY

20DBI

20DBL/W

18
W

16BRN
-CLOCK-—:(i??T0°)

-ILLUM
^™LY

18
B

18
DBL

18
LBL
-HIGH BEAM—(11

-ILLUM

-
FUEL-GAGE —{30

-ILLUM

-ILLUM-^

-PARK BRAKE

ALARM & BRAKE

WARN. LIGHT

-ENG TEMP.—(35),
(39

-L.H.
SIG.
LAMP—(14

-ILLUM
-
TRAFFIC

HAZARD

SW.

20
LBL

20
P

16BRN

20
LG

20
PPL

14
LBL

20
T

20 OR

20 DG
20 OR

20
t

20 DG

20
Y

20
LG

20
BRN

12
PPL
PARK BRAKE
SW.

20 DBL/W

20 DG

12R

20 DG

10 OR
12
GY

20 OR

18
W

18
W

14
LBL

14T/W

14
B
SW.
67
MOD ONLY

L.H. COURT
LP.

(67 MODELS
&

16600 ONLY)
18 W-'
T/G WINDOW
SW.

(45 MOD ONLY)
DOOR JAMB
SW.

(ALL EXCEPT 15300-400)

Fig.
106 - Instrument Panel Cluster ~ Chevrolet

CHEVROLET CHASSIS SERVICE MANUAL

ELECTRICAL-BODY AND CHASSIS 12-68

-7«3« R.H. DR. JAMB.SW.

C_18W-^{|>R.H. COURT

es RADIO CONN.

c5£ siHp INST. PANEL

COMPT. LAMP

ALL EXCEPT

(13100-400)

HEATER

CONTROL

HTR. CONTROL

LAMP

IGNITION SW.

LGT.

R. TURN IND.

INST.'CL. LP.
HEATER

RESISTOR

18 OR

20 Y

12 PPL/W

12 R

12 P

20 DG

14BRN

12 BRN

24 BRN/W

14
OR

20 GY
12 PPL/W

12 R

12 P

24 BRN/W

14
OR

BRK. ALARM

IND.

HI BEAM

IND.
LP.

GEN. IND. LP.

TEMP. IND. LP

INST* CL. LP.

OIL PRESS

IND.
LP.

HORN BUTTON

TO TRAFFIC

HAZARD SW.

20DBL
INST. CL. LP.

INST. CL. LP.

18 LBL

18 B

18DBL

r—20
BRN

20 OR
20
OR

20 PPL

4 LBL

20 DG

12 R

18 OR

BODY HARNESS

18 W—O-18W
^-20 BRN

20 LG

20 Y

20 DG
L.H. DR. JAMB SW.

20 LG

20 Y

20 DG

Fig.
Ill - Instrument Panel and Cluster — CheveNe

CHEVROLET CHASSIS SERVICE MANUAL