Installation - HELIX PP40 Handbuch

Installation

The HELIX PP40 has to be connected to the head unit
(radio) as follows:
Caution: For carrying out the following steps you will
need special tools and technical knowledge. In order
to avoid connection mistakes and damages, please
ask your dealer for help if you have any questions
and please follow the mandatory instructions on
page 9 of this manual.
1. After removing the head unit / radio from the radio
slot by using the respective tools, disconncet the vehicle
cable harness from the head unit / radio. Afterwards, con-
nect the vehicle cable harness to the ISO terminals of the
HELIX cable harness (compare No.1, Fig.3).
2. Connect the ISO terminals of the HELIX cable
harness to the head unit / radio (compare No.2, Fig.3).
According to your vehicle type, you might need a speci-
fic adapter. Please check our vehicle-list (compare the
plug'n play section on www.audiotec-fischer.com) for fin-
ding out if you need such an additional adapter for instal-
ling the PP40.
3. Connect the HELIX cable harness to the PP40.
(compare No.3, Fig.3)
4. Concerning the power supply of the PP40 there are
two alternatives which are described in the chapters 4a
and 4b.
4a. Power supply via vehicle cable harness: Depending
on the vehicle type, the connectors for ignition-plus and
permanent-plus can be altered. The PP40 must not be
powered via the ignition plus because this might result
in a damage of the vehicle's electronic circles. Thus, the
assignment ignition-plus and permanent-plus (the battery
has to be connected again) has to be checked before
the final start of operation at the cables E (yellow) and
F (blue) with a voltmeter. Permanent-plus is the cable
where you a messure a 12V signal if the ignition of the
car is switched off.
After measuring, connect cable G to the permanent plus
(compare Fig.4a). the plus-cable of the cable harness is
normally secured by a fuse of max. 20A.
If you are not sure with the assignment of ignition-
plus and permanent-plus, please ask your dealer for
help.
4b. Direct power supply via the battery:
If the power supply of the PP40 cannot be provided via
the vehicle cable harness (max. 20 A), you can connect
the PP40 directly to the car battery. To do so, disconnect
the connection H (ground) and I (+12V). Afterwards, the
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ground cable should be connected to a central ground
reference point (this is located where the negative ter-
minal of the battery is grounded at the metal body of the
vehicle), or to a bright bare-metal location on the vehicle
chassis, i.e. an area which has
been cleaned of all paint residues. Before you under-
go this step, disconnect the car battery at the minus
pole. Connect the +12V power cable to the positive ter-
minal of the battery. The plus cable from the battery for
the complete system should be provided with a main fuse
(20 A) at a distance of max. 30cm from the battery. Each
of the cables J which are now out of use has to be insu-
lated. You can now reconnect the car battery (compare
Fig.4b).
Optimizing the volume set up: In order to set up the
ideal volume, turn the level controls Front an Rear to the
minimum (left stop). Now switch on the head unit / radio
with its maximum volume (right stop) and turn the fader to
front. Afterwards, turn the level control Front of the PP40
slowly to the right until you can realize a slight speaker
distortion. Now, turn the level control a little bit back to
the left. Turn the fader of the head unit / radio to rear and
repeat the procedure with the level control Rear. Finally,
turn the fader back to its original position.
Caution:
The PP40 might have more power than your head
unit / radio. Most factory system loudspeakers can
cope with this easily. Nevertheless, please be very
careful with the volume control. Excessive volumes
can result in a distorted sound and can damage the
loudspeakers.