MOST Audio Gateway

Location

Part Numbers

For vehicles except option code 529 (Japan) and 530 (USA):

Part No.	Notes
A2208271142	To date 20/01/2004
A2208701789	From date 20/01/2004 (replaced by A2208702889)
A2208702889	From date 20/01/2004

For vehicles with optin code 530 (USA), 625 (Australia) and K08 (radio frequencies for South Africa):

Part No.	Notes
A2208271242	From date 28/10/2003 to 20/01/2004 (replaced by A2208701889),
A2208701889	From date 28/10/2003 (replaced by A2208702989)
A2208702989	From date 28/10/2003

Wiring diagram

MOST and MQS 4-pin plug socket.

Audio output and power sockets.

Antenna sockets.

MOST + MQS 4-pin connector

MOST 2-pin plug (A0025459040) and MQS 4-pin plug (A0025458440) is used inside MOST and MQS 4-pin housing (A0005458430).

MOST housing:

• 1 MOST in
• 2 MOST out

MQS 4-pin housing:

• 1 (yellow/black) - Mute (Telephone mute connector sleeve)
• 2 (brown/red) - CAN-B H (Left voltage distributor (CAN) connector)
• 3 (blue/black) - MOST wakeup
• 4 (brown) - CAN-B L (Left voltage distributor (CAN) connector)

Audio output connector

14-pin bushing housing (A2205453728).

Contact spring for 14-pin bushing housing (A0135451426).

• 1 (blue) - (+) Bass module speaker speaker connector (pin 2)
• 2 (blue/white) - (-) Bass module speaker connector (pin 1)
• 3 (blue/yellow) - (+) Center cockpit speaker connector (pin 2) through Cockpit wiring harness and FFS [RBA] connector (pin 4)
• 4 (brown) - (-) Center cockpit speaker connector (pin 1) through Cockpit wiring harness and FFS [RBA] connector (pin 3)
• 5 (grey/green) - (+) Center cockpit speaker connector (pin 2)
• 6 (grey/white) - (-) Center cockpit speaker connector (pin 1)
• 7 (green) - (+) Left front door speaker group connector (pin 2)
• 8 (brown/green) - (-) Left front door speaker group connector (pin 1)
• 9 (pink) - (+) Left rear door speaker group connector (pin 2)
• 10 (brown/pink) - (-) Left rear door speaker group connector (pin 1)
• 11 (white) - (+) Right rear door speaker group connector (pin 2)
• 12 (brown/white) - (-) Right rear door speaker group connector (pin 1)
• 13 (black) - (+) Right front door speaker group connector (pin 2)
• 14 (brown/black) - (-) Right front door speaker group connector (pin 1)

Power connector

4-pin plug housing (A2205453928).

Contact spring for 4-pin plug housing (A0135451426).

• 1 (blue) - Rear window antenna amplifier module connector (pin 2)
• 2 - unused
• 3 (brown) - Ground (left wheelhouse in luggage compartment)
• 4 (red/yellow) - Fuse 24 left fuse box

Antennas

• (black) - Rear window antenna amplifier module (pin B)
• (black) - Rear window antenna amplifier module (pin C)