Audio2Car

The professional mute

Audio2Car

Installation description

for 84609 Audio2Car harness used for

Mercedes with Audio Gateway.

Needed items:

A: Audio2Car harness including Mute-box & Mute-loop.

B: Audio2Car extension cable (bought separately).

C: Audio2Car carkit adaptor (bought separately).

D: Carkit (bought separately).

Note: B & C can be replaced by an additional Mute-box and

extension cable from our Drive & Talk range.

Installation:

When delivered this Audio2Car cable-set is always fitted

with a Mute-box and a Mute-loop connector.

1st: Remove the key from the ignition barrel. This is

done to avoid error messages on the cars electrical system.

Such error can only be reset by an authorised Mercedes

Repair shop.

2nd: Locate & uncover the amplifier unit. Amplifier

locations:

•

CL-class C215 & S-class W220 both without Bose sound system install on amplifier in the left side of the

boot. An Audio2Car extension cable item no. AE5 is also required.

•

CLS-class W219 & Mercedes E-class W211 install on amplifier in the left side of the boot above wheel arc.

An Audio2Car extension cable item no. AE5 is also required.

•

SL-class R230 without Bose sound system install on amplifier below side panel beside left rear seat. An

Audio2Car extension cable item no. AE5 is also required.

•

SLK-class R171 without Harman Kardon sound system. Install on amplifier below front passenger step-

plate. An Audio2Car extension cable item no. AE3 is also required.

3rd: Connect the car-specific cable. Disconnect the connector on the amplifier unit and insert the Audio2Car harness

between the connector and amplifier unit.

4th: Check ignition source. When the cable-set is delivered the blue ignition wire is connected to the most used

ignition position. If there is no ignition source on this pin an IGNIBOX item no. “I” can be inserted to create an artifi-

cial ignition source or the blue ignition wire can be disconnected by the bullet connectors and manually connected to

an ignition source found elsewhere.

5th: Check fuse size. The fuse on the Audio2Car cable should not be bigger than the ones used on the wiring loom

supplied with the carkit. The fuses on the Audio2Car cable should be replaced with a size similar to the ones supplied

with the carkit.

Note: Never exceed the Maximum Fuse size for the Audio2Car cable. See first page.

6th: Extend the cable-set to the preferred location of the carkit. Use the extension cable B (or additional Drive &

Talk Mute-box with extension cable) to extend the cable-set to the preferred location of the carkit. Behind the glove-

box is recommended.

7th: Connect the carkit adaptor. Connect the carkit adaptor to the extension cable. Connect the carkit adaptor to

the carkit.

8th: Only applicable For Mercedes CLS class & Mercedes E class with Harman Kardon sound system upgrade

(Code 810). For these cars it is necessary to manually connect the yellow Mute-wire to the amplifier to achieve a full

mute of all speakers. Please see description on next page. Remaining Mercedes models: Connection of the Mute

wire to these cars models are not needed.

See our complete Radio Mute program on our website www.kram.dk

Connection of Mute-wire

Only applicable for CLS & E class with Harman Kardon sound system upgrade

Troubleshooting Guide

Carkit does not start up. Check if there is 12V between the black and the red wire and also between the black and

blue wire, in the 24 pin connector, when the car is started. If there is not 12v on both wires please check the follow-

ing:

1. If there is supply on the red constant 12v wire but not on the blue ignition wire the car may require an

alternative ignition source. See installation step 4.

2. Check that the bullets on the supply wires are properly connected. The supply wires are the red, blue and

black wires.

3. Check for a blown fuse on the Audio2Car harness or in the cars fuse-box.

The carkit does not turn off when the key is removed from the ignition barrel. Your carkit needs a real ignition

source. Please check the following:

1. Is there an ignition supply on the blue wire? There should be no voltage on the blue wire when there is no

key in the ignition. See installation step 4.

Not all speakers are muted. Try to disconnect the Mute-box and the Carkit adaptor C (or additional Drive and Talk

mute-box) from the Audio2Car harness then turn on the radio and check the following :

1. All front door speakers keep playing: This is the wrong Audio2Car harness for this car / sound system.

2. A few speakers keep playing: The mute wire needs to be connected, see installation step 8 or this is the

wrong Audio2Car harness for this car / sound system.

3. All speakers are now muted:

•

Carkits with 1 speaker mute: Some carkits can only mute 1 speaker channel with their build in

mute-box. This is normally stated on the label on the carkit adaptor for these carkits, else please

check the carkit manual. If a full mute is desired with these carkits, then this can be achieved by

either connecting the mute wire, see installation step 8. Or adding an additional mute-box from

our Drive & Talk range.

•

Carkits with 4 speaker channel mute: (or when additional Drive & Talk mute-box is used): Please

check that the “Mute-Loop” is attached to Mute-box delivered with the cable-set. Else please try

another carkit.

Carkit sound is in the wrong speakers or there is no carkit sound.

1. The two 24 pin connectors in the cable-set may be switched. The carkit should be connected to the 24 pin

connector with the Green, White, Gray and Purple wires.

2. The carkit may be defective. Please try another carkit.

Radio will not turn on or not working properly after installation.

1. Please check for a blown fuse at the radio or in the car fuse-box.

2. Remove the Audio2Car harness and connect the radio to the original car connector. If the radio is now work-

ing replace the Audio2car harness.

A: Audio2Car Harness

Item number 84xxx

24 pin Connectors

C: Audio2Car Adaptor

Item number AAxxx

D: Carkit

Bullet Connectors

Mute-box

B: Audio2Car Extension

cable Item number AEx

24 pin Connectors

Mute-loop

The amplifiers mute-input is found on

the amplifier in the MOST-bus connector

opposite the power and speaker connec-

tor

Beside the orange fiber optic cables 4 wires

are found. The mute-input is the yellow wire.

It is to this yellow wire the mute wire from

the Audio2Car cable will have to be con-

nected.

The yellow mute wire is

found near the male con-

nector on the Audio2Car

cable

Mute-wire

1 2

Audio2Car 1

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