18
4. WIRE ROUTING & CONNECTION
IMPORTANT! Disconnect the negative battery ter-
minal (-12V) before you start any wiring work! The
power supply of the car audio system must be dis-
connected until the entire wiring and installation is
completed.
The recommended minimum power cable cross-section of
the main power supply cable is 16 to 20mm
2
.
Using main power cables with small cross sections can re-
sult in unnecessary over-heating of the amplifier circuitry,
distortion at high volume levels and might even cause the
thermal protection circuitry to shut-off the amplifier.
■
Use rubber grommets when running cables through any
metal or sharp plastic, to prevent accidental shorting or shea-
ring. Make sure the cables do not interfere with normal ope-
ration of the vehicle.
■
The music signal cables (RCA interconnects) should be
kept far away from any potential sources of electrical inter-
ference e.g. electronic vehicle management systems (engi-
ne computers, relays etc.) fuel pumps, wiring harnesses etc.!
4.1 ROUTING RCA INTERCONNECTS &
REMOTE LEAD
Carefully run the RCA audio signal interconnect(s) and the
remote wire from the head-unit to the amplifier. The audio
signal cables must be routed completely separate from the
power cables. Use only double or triple shielded high qua-
lity interconnects!
Connect the remote wire lead to the remote output of the
head-unit and to the remote input terminal of the amplifier.
Finally connect the plugs of the RCA interconnects to the re-
spective outputs of the head-unit and the RCA input sockets
of the amplifier.
4.2 CONNECTION OF LOUDSPEAKER
CABLES
Connect the loudspeaker wires to the speaker terminals of
the amplifier. Use good quality wires of 1.5mm2 to 2.5mm2
cross-section. You will need a set of Allen wrenches for the
connection of the wires!
When baring wires, remove approximately 6-8mm of the in-
sulation and after axially twisting the wires; insert the bare
ends into the corresponding speaker terminal output on
the amplifier and tighten the terminal screws. Be sure to
maintain correct polarity ("
" to "
"; "
" to "
").
R650FRD_Manual 2003 25.04.2003 17:11 Uhr Seite 18
