GTH400-20107 06/03/98 15:49 Side 17
•The GTH400 will draw as much as 60 amps from the vehicle’s electrical system, enough to overload conventional vehicle wiring. Therefore the +12 volt power supply must be taken 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 60 Amp) 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
•Proper grounding is extremely important. Use a heat- and oil- resistant stranded copper automotive wire equivalent to the size used for the +12V connection. Crimp or solder and insulate any
The color code for the
Speaker-Level Input Harness
Color Codes |
| |
Group 1 Left (+): | White | |
Group 1 Left | White with | |
|
| Black Stripe |
Group 1 Right (+): | Gray | |
Group 1 Right | Gray with | |
|
| Black Stripe |
Group 2 | Left (+): | Green |
Group 2 | Left | Green with |
|
| Black Stripe |
Group 2 | Right (+): | Purple |
Group 2 | Right | Purple with |
|
| Black Stripe |
5. Adjusting the Gain
Before operating the GTH400, recheck all wiring connections to make sure they are correct and secure. Be sure that a fuse (60 amps, not included) is installed in the +12V line near the battery. Reconnect the negative ground
•The setting of the gain controls on the GTH400 is important to ensure proper performance, low noise levels, and maximum reliability in the system. As a general rule, controls on components at the
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