Audi A3 car radio harness diagram

Discover in this article, the wiring diagram for the car radio (I8A) from Audi for Audi A3

Common course pattern

Data bus diagnostic interface, Information electronics control unit 1, Connection for external audio sources, Fuse 1 on fuse holder A, Fuse holder C

J533 - Data Bus Diagnostic Interface

J794 - Information electronics control unit 1

R199 - Connection for external audio sources

SA1 - Fuse 1 on fuse holder plate A

S131 - Fuse 1

SC - Fuse holder C

SC12 - Fuse 12 on fuse holder plate C

T4s - Connector, 4 connections

T8j - Connector, 8 connections

T12v - Connector, 12 connections

T12y - Connector, 12 connections

T20a - Connector, 20 fittings

687 - Ground point 1 on the central tunnel

B415 - Junction 1 (Infotainment CAN bus High) in main wiring

B421 - Junction 1 (Infotainment CAN bus Low) in main wiring *

- except for RS3 *2

- only on vehicles with connection for external audio sources – AUX IN socket *3

- only on vehicles with 8 speakers (8WD) *4

- only on vehicles with 4 speakers (8RE) *5

- only for RS3 *6

- See current flow diagram valid for the battery

Multimedia system control unit, Information electronics control unit 1, Front left tweeter, Front left bass speaker, Front right tweeter

E380 - Multimedia system control unit

J794 - Information electronics control unit 1

R20 - Left front tweeter

R21 - Left front woofer

R22 - Right front tweeter

T2ii - Connector, 2 connections

T2ij - Connector, 2 connections

T2ik - Connector, 2 connections

T8ag - Connector, 8 connections

T8k - Connector, 8 connections

T12v - Connector, 12 connections

T27 - Connector, 27 connectors, on left A-pillar

* - only on vehicles with 4 speakers (8RE)

*2 - only on vehicles with 8 speakers (8WD)

Information electronics control unit 1, Left rear tweeter, Left rear bass speaker, Right rear bass speaker, Right front bass speaker

J794 - Information electronics control unit 1

R14 - Left rear tweeter

R15 - Left rear woofer

R17 - Right rear woofer

R23 - T2il front right woofer - Connector, 2 connections

T2im - Connector, 2 connections

T2in - Connector, 2 connections

T2io - Connector, 2 connections

T8ag - Connector, 8 connections

T27a - Connector, 27 connections, on the right A-pillar

* - only on vehicles with 4 speakers (8RE)

*2 - only on vehicles with 8 speakers (8WD)

*3 - only on vehicles with 3-door equipment

*4 - only on convertibles

Information electronics control unit 1, Left rear tweeter, Left rear woofer, Right rear treble speaker, Right rear woofer, Aerial amplifier, Aerial amplifier 2

J794 - Information electronics control unit 1

R11 - Antenna

R14 - Left rear tweeter

R15 - Left rear woofer

R16 - Right rear tweeter

R17 - Right rear woofer

R24 - Antenna amplifier

R93 - Radio antenna 2

R111 - Antenna amplifier 2

T2ip - Connector, 2 connections

T2iq - Connector, 2 connections

T2ir - Connector, 2 connections

T2is - Connector, 2 connections

T2it - Connector, 2 fittings

T2n - Connector, 2 connections

T2o - Connector, 2 connections

T4v - Connector, 4 connections

T8ag - Connector, 8 connections

T27b - Connector, 27 connections, on left B-pillar

T27c - Connector, 27 connections, on right B-pillar

R71 - Connection (positive, loudspeaker) in the left rear door wiring harness

R72 - Connection (negative, speaker) in left rear door wiring harness

R73 - Connection (positive, loudspeaker) in the right rear door wiring harness

R74 - Connection (negative, speaker) in right rear door wiring harness

* - only on vehicles with 8 speakers (8WD)

*2 - only on vehicles with 3-door equipment

*3 - only on convertibles

*4 - only on vehicles with 5-door equipment

*5 - only on vehicles with 4-door equipment

Information electronics calculator 1, Antenna amplifier, Antenna amplifier 2, Antenna amplifier 3

J794 - Information electronics control unit 1

R11 - Antenna

R24 - Antenna amplifier

R93 - Radio antenna 2

R111 - Antenna amplifier 2

R112 - Antenna amplifier 3

T2k - Connector, 2 connections, Coupling point for rear cover

T2l - Connector, 2 connections, Coupling point for rear cover

T2n - Connector, 2 connections

T2o - Connector, 2 connections

T4v - Connector, 4 fittings 50

- Earth point, left in luggage compartment 51

- Ground point, right in the luggage compartment

* - only on vehicles with 3-door equipment

*2 - only on vehicles with 5-door equipment

*3 - until October 2014

*4 - only on convertibles

*5 - from November 2014

*6 - only on vehicles with 4-door equipment

Also read: How to remove audi a4 car radio?

Information electronics control unit 1, Antenna amplifier

J794 - Information electronics control unit 1

R11 - Antenna

R24 - Antenna amplifier

R111 - Antenna amplifier 2

R248 - Radio antenna

T2fm - Connector, 2 fittings

T2fn - Connector, 2 connections

T4bk - Connector, 4 connections

T4v - Connector, 4 connections 51

- Ground point, right in the luggage compartment

* - only on convertibles

This article on the Audi A3 Car Radio Wiring Diagram is now finished. We hope it has you more. Do not hesitate to let us know in the comments.

Glossary Audi A3 car radio wiring diagram: For car, Dashboard, Alpine, Pioneer, Steering wheel control, Discount, Thumbs, Kits, Adapter, Hands-free, Diesel, PLUS, Mégane, Tactile, Touch screen, Stereo, Spare parts