Edge ED305-E1 Owner's Manual page 6

WIRING CONNECTIONS TO AN OEM
OR AFTERMARKET HEADUNIT
attached to the crossover and the tweeter.
vehicle ensuring that correct polarity is observed.
Positive:
Negative: Black
terminals of the woofer.
WIRING CONNECTIONS TO AN
EXTERNAL AMPLIFIER
attached to the crossover and the tweeter.
Positive:
Negative: Black
terminals of the woofer.