Precision Power D500/1 - Manual (Page 9)

Note: The cables running from the battery to the rear of the car
should be installed on the side of the car opposite to the antenna.
When using 16 gauge wire or larger, run the speaker wires from the
amplifier location through the vehicle to the speakers. Observe the
same precautions for routing these wires that you followed for running
the power and remote turn on wires. Cut off excess and, using wire
strippers, strip 1/4-inch of insulation. Locate the speaker/remote turn-
on
PowerLock TM connector. Using a hex wrench loosen the screws on
the upperside of the connector. Insert the speaker leads into the end
and secure with the hex wrench. Check to be sure you've maintained
proper polarity before securing each wire.
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