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Locate an area near the amplifier(s) that is metal and clean an area about the size
of a quarter to bare metal. Inspect the area around and underneath to be sure you
won't drill into wires, brake or fuel lines, etc. Drill a pilot hole in the middle of this
area. Terminate the ground wire with a ring connector and attach it to the bare
metal using a #8 sheet metal screw and washer or preferably, a bolt, nut and a
star washer (not supplied). We suggest crimping and soldering this connection.
After the connection is complete, coat the area (on both sides) with silicone or
some similar material to prevent rust from developing on the bare metal. If your
grand total current draw is over 50 amps (or total output power is over 300 watts),
you should run a separate ground wire beside your power wire from the battery
to the amplifier(s). Keep the ground and power wires as close together as possi-
ble, and use the same gauge wire for both. This will ensure that you have a good
ground path, and may eliminate such potential problems as engine noise and
overheated amplifiers.
If your grand total current draw is over 100 amps (or total output power is over
600 watts), you are probably exceeding the capability of your charging system.
Dimming lights and fluctuating voltage are solid indicators that you need to
upgrade your alternator, battery, or both. Keep in mind that your amplifiers simply
convert electrical energy to acoustical energy, and any electrical deficiency will
compromise the performance of your sound system. For more information about
charging system upgrades, see your local authorized PrecisionPower Dealer or
call PrecisionPower Technical Support at 1-800-62POWER x 229.
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