JBL GTS100X Owner's Manual - page 15
15
Power Supply Connections
The power input and remote turn-
on wires are connected to the
GTS100x via the power connector
on the end of the amplifier. Use
the included wire harness for con-
nections. In some cases, such as
a custom competition installation,
you may wish to make your own
custom power harness. The part
numbers of the mating connector
and terminals are listed in the
specifications section of the man-
ual, and are common parts avail-
able at many electronics parts
retailers. Please do not call JBL
for these; we stock only the pre-
made harness supplied with the
amplifier.
+
12V Battery Wire (Yellow)
• Connect the yellow wire di-
rectly to
+
12 volt terminal of
the battery.
• If it is necessary to extend the
power wire, use 12 gauge or
larger wire that is heat and oil
resistant.
• The GTS100x will draw as much
as 20 amps from the vehicle’s
electrical system, enough to
overload conventional vehicle
wiring. Therefore, the
+
12-volt
power supply must be run
directly from the positive side
of the battery. Do not connect to
the vehicle’s fuse block or to a
wire feeding other accessories.
• To prevent electrical system
damage or fire, a fuse holder
and fuse (not included, maxi-
mum 20A) must be installed in
the power supply wire, as close
to the battery as possible,
and before the wire travels
through the firewall or other
metal panel.
Ground Wire (Black)
• Proper grounding is extremely
important. It has a significant
effect on the overall perfor-
mance and noise level of the
system. The ground wire must
be solidly connected to a major
sheet-metal structure of the
vehicle. Usually the power sup-
ply ground wire can be con-
nected to a sheet metal panel
near the amp mounting loca-
tion. Scrape all paint and
primer off the sheet metal at
the grounding point to ensure a
good electrical connection.
Attach the wire to the ground-
ing point with a sheet-metal
screw and lock washer (prefer-
ably a star lock washer) or a
bolt/lock washer/nut set.
• In some vehicles, such as those
that have non-metal bodies, it
may be necessary to extend the
power supply ground wire and
connect it to a frame rail or
even directly to the negative (–)
terminal of the battery. Use
heat- and oil-resistant 10 gauge
or larger stranded copper auto-
motive wire and crimp or sol-
der and insulate the wire-to-
wire connections. Keep the
extension wire as short as possi-
ble. Solder or crimp a terminal
on the end of the extension wire
and connect it to the frame or
battery terminal.
GTS100x OM 7/16/98 2:56 PM Page 15