JBL GTS100 owner manual Power Supply Connections, +12V Battery Wire Yellow, Ground Wire Black

Power Supply Connections

The power input and remote turn-on wires are connected to the GTS100 via the power connector on the end of the amplifier. Use the included wire harness for connections. In some cases, such as a custom competition installation, you may wish to make your own custom power harness. The part number of the mating connector and terminals is listed in the specifications section of the man- ual, and is a common part available at many electronics parts retailers. Please do not call JBL for this, we stock only the pre-made harness as supplied with the amplifier.

+12V Battery Wire (Yellow)

•Connect the yellow wire directly 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 GTS100 will draw as much as 20-Amps from the vehicle’s electrical system, enough to overload conven- tional vehicle wiring. Therefore the +12 volt power supply must be 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, maximum 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 impor- tant. It has a significant effect on the overall performance 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 supply ground wire can be connected to a sheet metal panel near the amp mounting location. Scrape all paint and primer off the sheet metal at the grounding point to ensure a good electrical connection. Attach the wire to the grounding point with a sheet metal screw and lock washer (preferably 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 automotive wire and crimp or solder and insulate the wire-to-wire connections. Keep the extension wire as short as possible. Solder or crimp a terminal on the end of the extension wire and connect it to the frame or battery terminal.

•When multiple amplifiers are installed in the system, it is often best to ground all of the amplifiers and signal processors to the same point to pre- vent noise pickup from a ground loop. In some unusual installations the noise level will be lower if the amplifier or amplifiers are grounded to the same point that the head unit is grounded. Use of heavy gauge

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