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To simplify installing to an OEM or aftermarket ra-
dio the HELIX DSP PRO can also be connected
using the optional Easy Plug Cable (EPC 5.2 - art.-
no. HZ45000) which will supply the processor with
both power and loudspeaker signals of the radio.
No factory wires or plugs need to be cut using this
connection method.
Connection to an OEM radio is detailed below:
1. Once the radio has been removed by using the
right tools disconnect the OEM harness from
the radio. Connect the vehicle cable jack con
-
nectors of the Easy Plug Cable. You may need
a special ISO-adaptor depending on vehicle
type. In order to varify please check the adaptor
database on the Audiotec Fischer homepage
www.audiotec-fischer.com.
2. Connect the cable plugs to the car radio.
3. Connect the highlevel plug (8-pole connector)
and the power supply plug (4-pole connector)
to the appropriate HELIX DSP PRO inputs.
4. Please note when connecting the power supply:
The constant and switched 12 Volts can be re
-
versed depending on vehicle type.
The HELIX DSP PRO should not be plugged
into the power supply via the ignition cable as
this may cause interference. Before connecting
the Easy Plug Cable to the HELIX DSP PRO,
verification of the constant 12 Volts wire must be
made between the blue and red wires coming
from the ISO connectors of the harness with a
voltmeter. The constant 12 Volts wire will show
voltage even when the ignition is turned off.
Once the correct wire is identified connect the
red wire with jack to the corresponding blue or
red wire with plug. The positive cable of the har
-
ness usually has a fuse of max. 20 A.
Attention:
The ex factory condition is that the
red wires are connected.
If you’re uncertain of assignment ask your
dealer.
Note - Cars equipped with MOST bus:
In cars equipped with MOST bus structure it is
mandatory to unplug the fiber-optic cable from the
original radio connector and insert it into the ISO
adaptor, which has a dedicated recess for this.
Installation with „Easy Plug cable“
