Ford COUGAR 1968 Shop Manual page 649

PART 15-3-
Instrument
. . .
Cluster. Gauges and
.
.
t
Controls
. .
Section
. .
Page
Section Page
.......
1 Description and Operation
............................
15-34
Charge Indicator Gauge
-
~ o u & r XR-7 15-43
.
.
Charge Indicat~r~Gauge
-
Montego
Electric Clock
-
and Mustang
.......
: : :
..............................
I 5-34
Cougar (Console Mounted)
.....................
1 5 d
.
.
Charge Indicator Light
..............................
15-34
Fairlane
...............................................
15-44
. ,
Fuel Indicating System
.....
:
........................
15-34
Falcon
...................
. -
.........................
15-44
..............................
Instrument Voltage Regulator
.....................
15-35 Mustang and Cougar 1 5.44
......................
Low Fuel Level Warning System
.................
15-35
Montego (See Tachometer) 15-53
Oil Pressure Gauge
...................................
15-35 Fuel Gauge
-
.
.
......................... ...............
Oil Pressure Indicator Light
!
15-35 Fairlane
. .
15-44
...........
............
................................................
Speedometer
............................................
15-35 Falcon 15-44
.............................................
Temperature Gauge
..................................
15-36 Montego 15-45
Temperature Indicating Lights
I
5-36
Fuel Gauge and Temperature Gauge
-
.....................
..........
2 Diagnosis and Testing
..................................
15-36
Cougar, Cougar XR-7 and Mustang
15-45
....................................
Trouble Diagnosis Guides
..........................
15-36 Fuel Sending Unit 15-45
Brake Warning Light
.............................
15-36
Igni3on Switch
-
All
.................................
5-45
Clock 15-36
Instrument Cluster
-
..................................................
.................
Cold Temperature Light
.........................
15-37
Fairlane, Falcon and Montego 15-45
.......................
Instrument Cluster
.................................
15-37
Cougar and Cougar XR-7 15-46
..............................................
Hot Temperature Light
...........................
15-38
Mustang 15-47
..........
Low Fuel Warning Light
........................
15-38
Instrument Cluster Illumination Bulbs 15-47
Oil Pressure Light
..................................
15-39
Instrument Voltage Regulator
................................................
Speedometer
.........................................
Cougar 15-47
15-39
...............................................
Tests
......................................................
15-40
Fairlane 15-47
................................................
Ammeter
.............................................
15-40
Falcon 15-47
.............................................
Charge Indicator Light
...........................
15-40 Montego .I 5.47
..............................................
Fuel Gauge and Fuel Sending Unit
...........
15-40 Mustang 15-48
.............
Ignition Switch Continuity
......................
15-40
Oil Pressure Sending Unit or Switch
15-48
......
Instrument Cluster Gauge Wiring
Parking Brake Warning Switch -Cougar
15 4 8
Harness
............................................
15-41
Speedometer
-
...............................................
Instrument Voltage Regulator
..................
Fairlane 15-48
15-41
..................................................
Instrument Voltage Regulator -Gauge Falcon 15-48
..............................................
Calibration
........................................
1 5.4 1 Montego 15-48
..........
Low Fuel Level Warning System
15-41
Mustang, Cougar and Cougar XR-7
15-49
..............
............................
Oil Pressure Indicator Gauge 15-42
Speedometer Shaft
-
All 15-49
...................
Oil Pressure Indicating Light
...................
15-42
Speedometer Shaft and Housing
-
.............................
Speedometer
.......................................
15-42 Cougar and Mustang 15-49
...............................
Temperature Indicating Lights
.................
15-42 Falcon and Fairlane 15-52
Temperature Gauge
...............................
15-42 Montego
..............................................
15-52
3 In-Vehicle Adjustment and Repair
..................
15-43
Tachometer
-
...............................................
Clock Adjustment
.....................................
15-43 Fairlane 15-52
...................................
Speedometer Repair Procedures
...................
15-43 Montego
. .
........
15-53
.....................
4 Removal and Installation
..............................
15-43
Mustang and Cougar XR-7
15-53
Charge and/or Oil Pressure Indicator Temperature Sending Unit
.........................
15-53
Gauge
-
Mustang
.................................
..............................................
15-43
5
Specifications 15-53
1 DESCRIPTION AND OPERATION
CHARGE INDICATOR GUAGE-
MONTEGO AND
MUSTANG
The charge indicator gauge is an
ammeter. which indicates whether
the battery is being charged or dis-
charged
.
The ammeter is non-adjus-
able and should be replaced if proven
to be defective
.
CHARGE INDICATOR LIGHT
the battery is discharging and the al-
ternator is not supplying current
.
When the ignition switch is closed.
battery current flows through the
charge indicator light and 15-ohm
parallel resistor. and through the reg-
ulator voltage limiter contacts to the
field. and the light comes on
.
When the alternator builds
UD
enough voltage to close the field rela;
contacts. full voltage is applied to the
A red alternator charge indicator field and the charge indicator light
light is used
.
This light glows on if goesout
.
FUEL INDICATING SYSTEM
The fuel indicating system consists
of a sender unit located in the fuel
tank and a fuel gauge mounted in the
instrument cluster
.
The fuel gauge pointer is attached
to a wire wound bi-metal strip and
when heated by the flow of current
controlled by the sender. produces the
appropriate indication
.
When the
current is low. there is little heating
effect and the pointer moves a short