Alfa Romeo GT 1.8 T.SPARK – INSTRUMENT LIGHTING – – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

Wiring diagram - INSTRUMENT LIGHTING - Alfa Romeo GT 1.8 T.SPARK

INSTRUMENT LIGHTING - WIRING DIAGRAM Alfa Romeo GT 1.8 T.SPARK

Components - INSTRUMENT LIGHTING - Alfa Romeo GT 1.8 T.SPARK

Component code	Name	Assembly reference
B1	JUNCTION UNIT	-
B2	JUNCTION UNIT UNDER DASHBOARD
B5	MAXI FUSE-1 BOX	-
B99	MAXIFUSE BOX ON BATTERY
C15	FACIA EARTH, DRIVER''S SIDE	-
C38	EARTH ON TUNNEL	-
D20	REAR DASHBOARD COUPLING ( REAR )	-
D31	RIGHT FRONT DOOR REAR COUPLING/.	-
D43	DASHBOARD/CENTRE CONSOLE COUPLING	-
D75	RADIO PHONE JUNCTION ( FACIA )	-
D97	SHORT CIRCUITING COUPLING	-
E50	INSTRUMENT PANEL
H1	IGNITION SWITCH
H10	CONTROLS FOR HEADLAMP ALIGNMENT INSTRUMENT LIGHTING ADJUSTMENT ( FACIA )
H12	HAZARD WARNING LIGHTS, FOG LIGHTS, REAR FOG LAMPS CONTROL
H35	SWITCHES ON TUNNEL ( CONNECTORS )
H50	ELECTRIC WINDOW SWITCH ON FRONT DOOR PASSENGER SIDE
M1	BODY COMPUTER
P20	RADIO
P20	RADIO
P50	CIGARETTE LIGHTER/POWER SOCKET ( CONNECTORS )

Location of components - INSTRUMENT LIGHTING - Alfa Romeo GT 1.8 T.SPARK

INSTRUMENT LIGHTING - LOCATION OF COMPONENTS Alfa Romeo GT 1.8 T.SPARK

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Components - INSTRUMENT LIGHTING - Alfa Romeo GT 1.8 T.SPARK

Component code	Name	Assembly reference
B1	JUNCTION UNIT	-
B2	JUNCTION UNIT UNDER DASHBOARD
B5	MAXI FUSE-1 BOX	-
B99	MAXIFUSE BOX ON BATTERY
C15	FACIA EARTH, DRIVER''S SIDE	-
C38	EARTH ON TUNNEL	-
D20	REAR DASHBOARD COUPLING ( REAR )	-
D31	RIGHT FRONT DOOR REAR COUPLING/.	-
D43	DASHBOARD/CENTRE CONSOLE COUPLING	-
D75	RADIO PHONE JUNCTION ( FACIA )	-
D97	SHORT CIRCUITING COUPLING	-
E50	INSTRUMENT PANEL
H1	IGNITION SWITCH
H10	CONTROLS FOR HEADLAMP ALIGNMENT INSTRUMENT LIGHTING ADJUSTMENT ( FACIA )
H12	HAZARD WARNING LIGHTS, FOG LIGHTS, REAR FOG LAMPS CONTROL
H35	SWITCHES ON TUNNEL ( CONNECTORS )
H50	ELECTRIC WINDOW SWITCH ON FRONT DOOR PASSENGER SIDE
M1	BODY COMPUTER
P20	RADIO
P20	RADIO
P50	CIGARETTE LIGHTER/POWER SOCKET ( CONNECTORS )

Description - INSTRUMENT LIGHTING - Alfa Romeo GT 1.8 T.SPARK

The vehicle has numerous light sources for optimum lighting of the instruments and the controls.Some of these are lit up when the ignition is ON (INT), others with the side lights on and on others the intensity varies according to a dimmer logic managed by the Body Computer.The following controls light up when the ignition is turned ON:electric window switch on front door passenger side;controls for hazard warning lights, fog lights, rear fog lamp;controls for headlamp alignment, instrument lighting adjustment, milometer zeroingradio* - switch unit on the tunnelThe Body Computer manages the lighting of the following using the go ahead signals with the ignition ON (INT) and the side lights:cigar lighter/ashtrayconnection for radio phoneAll the instruments are lit up with the ignition switched ON.The light intensity can be adjusted to different levels, using an outside button, located in the panel to the side of the steering wheel: there are 11 different settings. (from 0 to 10)The intensity level is set by pressing the ''MODE +'' and ''MODE -'' buttons and is shown on the instrument panel; the setting is also memorized and used later on.767the light intensity cannot, however, be reduced to zero.The light intensity level is also supplied, via the CAN, to the radio connectors (or the radio-phone-navigator) and the climate control system control unit to dim the backlighting of the displays: it ranges from maximum lighting (daytime) to dimmed lighting (nighttime): the same logic also adjusts the control button lighting.With the exception of the speedometer, the instrument panel lighting can be deactivated by operating the ''MODE''button for a prolonged period (between 4 and 10s).If there is a problem with one of the items not lit up (e.g. fuel reserve, engine coolant overheating, etc...) the entire panel is lit up.The instrument panel displays are lit up and can always be adjusted whether the side lights are on or off.

Functional description - INSTRUMENT LIGHTING - Alfa Romeo GT 1.8 T.SPARK

The supply line with the ''ignition ON'' (INT) protected by the fuse F39 of the underdashboard control unit B2, provides the lighting for the electric windows switch in the front door, passenger sideH50, the hazard warning lights, fog lights, rear fog lampH12, headlamp alignment, instrument panel light adjustment, milometer zeroingH10, connector for preparation for the telephoneD75and lastly the switch unit on the tunnelH35in addition to the radioP20(BASIC version - without display).The supply with the side lights on is, on the other hand, provided by the Body ComputerM1 pin 18 of connector C to the cigar lighter P50 and to the connector for the preparation for the telephoneD75.The ''MODE'' and ''KM'' controls for the unitH10are also supplied by the line (INT) protected by fuse F39 of control unitB2and send the command to the instrument panelE50, pin 16 of connector B and pin 9 of connector A.The Body ComputerM1is connected, via the CAN line, to the instrument panelE50 from which it receives the ''light intensity adjustment'' signal which is transmitted to the radio connector (or the radio-phone-navigator) and to the climate control system control unit .