1995 AUDI A4 radio antenna

91-3

Retrofitting radio systems

The connectors on the factory-installed radio
wiring harness are designed for genuine Audi
radios.
Radios with different types of connectors must
be installed using adapter wires.

CAUTION!

When connecting the vehicle speed sensor
signal wire (on radios with the GALA
function), take particular care to avoid short
circuits, which could result in vehicle
malfunctions (e.g. in the engine management
system).
Vehicle malfunctions may also occur if the
vehicle speed sensor signal wire is connected
to radios supplied by other manufacturers.
If a non-stock radio is installed ("Concert" m.y.
1998 ) it can have a negative effect on the
antenna amplifier. The original Audi radio units
supply power to the antenna amplifier through
the center wire of the HF cable.

Retrofitting CD systems
The wiring for the CD changer is installed in the
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p://127.0.0.1:8080/audi/servlet/Dis
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pair&id=AUDI.B5.EE02.91.1

91-4

Radio system, overview ( m.y. 1997)


"Delta" radio system
Multi-pin connectors I, II, III (on back of radio), terminal assignments
Note:
Terminals which are not listed are vacant/unassigned. 1 - Rear window antenna with antenna amplifier
2 - Bass speaker in front door trim (bottom)
3 - Mid-range/treble speaker in front door trim (top)
4 - Broad-band speaker (active with double amplifier) in parcel shelf (left-
rear)
5 - Broad band speaker (passive) in parcel shelf (right-rear)
6 - CD changer (optional) in luggage compartment (left-rear)

20-pin connector I
1 - Line out, left-rear
2 - Line out, right-rear
3 - Low frequency Ground (GND)
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p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
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pair&id=AUDI.B5.EE02.91.1

91-6


8-pin connector III (black)
1 - Vehicle speed sensor (Gala)
2 - Low frequency mute switch (telephone system)
3 - Terminal 30
4 - Terminal 86s connection for ignition key switched on and off (S-
contact)
5 - Switched positive supply (B+) for antenna amplifier
6 - Illumination (terminal 58d)
7 - Terminal 30
8 - Ground (GND) (terminal 31)
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p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE02.91.1

91-7

"Delta" radio with BOSE sound system

Multi-pin connectors I, II, III (on back of radio) terminal assignments
Note:
Terminals which are not listed are vacant/unassigned. 1 - Rear window antenna with antenna amplifier
2 - BOSE amplifier in luggage compartment (left-rear)
3 - Bass speaker in front door trim (bottom)
4 - Mid-range/treble speaker in front door trim (top)
5 - Broad band speaker in rear door trim
6 - Bass speaker in parcel shelf
7 - CD changer (optional) in luggage compartment (left-rear)

20-pin connector I
1 - Line out, left-rear
2 - Line out, right-rear
3 - Low frequency Ground (GND)
Pa
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ystems
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE02.91.1

91-9


8-pin connector III (black)
1 - Vehicle speed sensor (Gala)
2 - Low frequency mute switch (telephone system)
3 - Terminal 30
4 - Terminal 86s connection for ignition key switched on and off (S-
contact)
5 - Switched positive supply (B+) for antenna amplifier
6 - Illumination (terminal 58d)
7 - Terminal 30
8 - Ground (GND) (terminal 31)
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ystems
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE02.91.1

91-10

Radio system, overview (m.y. 1998 )


"Concert" radio (sedan)

"Concert" radio (Avant) 1 - Rear window antenna with antenna amplifier
2 - Bass speaker in front door trim (bottom)
3 - Mid-range/treble speaker in front door trim (top)
4 - Broad band speaker (active with double amplifier) in parcel shelf (left-
rear)
5 - Broad band speaker (passive) in parcel shelf (right-rear)
6 - CD changer (optional) in luggage compartment (left-rear)

1 - Roof antenna with antenna amplifier
2 - Bass speaker in front door trim (bottom)
3 - Mid-range/treble speaker in front door trim (top)
4 - Broad band speaker (2-way) in rear door trim
5 - Bass speaker (subwoofer) in left-rear of cargo area under side trim
6 - CD changer (optional) in left-rear of cargo area under storage
compartment
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11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE02.91.1

91-14

"Concert" radio with BOSE sound system
(sedan)

"Concert" radio with BOSE sound system (Avant) 1 - Rear window antenna with antenna amplifier
2 - Telephone speaker
3 - BOSE amplifier in luggage compartment (left-rear)
4 - Bass speaker in front door trim (bottom)
5 - Mid-range/treble speaker in front door trim (top)
6 - Broad band speaker in rear door trim
7 - Bass speaker in parcel shelf
8 - CD changer (optional) in luggage compartment (left-rear)

1 - Roof antenna with antenna amplifier
2 - Telephone speaker
3 - BOSE amplifier combined with bass speaker (subwoofer) in cargo
area (left-rear) under side trim
4 - Bass speaker in front door trim (bottom)
5 - Mid-range/treble speaker in front door trim (top)
6 - Broad band speaker in rear door trim
7 - CD changer (optional) in cargo area (left-rear) under storage
compartment
Pa
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ystems
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE02.91.1

91-18


Radio system, overview (sedan)

1 -
Radio
In center consoleRemoving and installing page 91
-23
2 -
BOSE amplifier
In luggage compartment (left-rear) under
parcel shelf Removing and installing page 91
-35
3 -
Antenna amplifier
In left D-pillar trimRemoving and installing page 91
-39
4 -
Rear window antenna
Upper 3 wires are AM antenna (non-
heated) Remaining wires are FM antenna (heated)Removing and installing Repair Manual, Body Exterior, Repair Group 64
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11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE02.91.1