The KX amplifi er's RCA inputs will receive either high or low level signals from your car stereo's source
unit. A high-level signal can be run from the source unit's speaker outputs to the stereo RCA input on the
end panel of the amplifi er using the KICKER KISL as shown. Alternatively, the signal can be delivered to
the amplifi er using the low-level RCA outputs on the source unit. Keep the audio signal cable away from
factory wiring harnesses and other power wiring. If you need to cross this wiring, cross it at a 90 degree
angle.
core conductor
source unit
high-level speaker
outputs
+
–
Install a fuse within 18" (45cm) of the battery and in-line with the power cable connected to your amplifi er.
If you ever need to remove the amplifi er from the vehicle after it has been installed, the ground wire should
be the last wire disconnected from the amplifi er--just the opposite as when you installed it.
Model
External Fuse
(sold separately)
KXA400.2
1 x 60 Ampere
KXA400.4
1 x 100 Ampere
KXA1200.2 1 x 150 Ampere
POWER WIRING
≤24"
(60cm)
bare-metal chassis ground
2017 KXA Stereo Amps Rev E.indd 3
2017 KXA Stereo Amps Rev E.indd 3
shield
Power/Ground Wire
8 Gauge
4 Gauge
4 Gauge
audio inputs
external fuse
remote turn-on
(see page 6)
KICKER KISL (optional)
to amplifi er
OR
RADIO
DETECT
OFF/ON
≤18"
(45cm)
12V
battery
to amplifi er
from source unit high-
level speaker outputs
KICKER Wiring Kit
PK8, CK8
PK4, CK4
PK4, CK4
bare-metal
chassis ground
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