Hogtunes NCA 450-AA : 4 Channel Amplifier / 4x50 watts (1998 - 2013 - model years) - Manual (Page 3)

Attach the amps red wire to the positive (+) battery terminal, and the amps black
wire to the negative (‐) battery terminal. The factory battery wires are also re‐
installed at this point. When attaching the power and ground wires, it is always a
good practice to do the negative first. When the positive connector touches the
battery, some sparking is normal.
Step#7: Turn the stereo on, and at low volume, test to make sure all speakers are
working and the fader on the radio (if present) works. Note: Sound quality is best
with the fairing mounted and secured on the bike. Re‐install the seat making sure
the amplifiers “+” and “‐” connectors are positioned in such away so they will not
bend or break when the riders weight is on the seat. This is the best time to take a
few minutes to “clean up” the wiring, and secure using supplied zip‐ties.
Adjusting the Bass and Treble: The way the system sounds sitting still or at a stop
light will be RADICALLY different from how it sounds “at speed”. Your able to use
the radios controls to adjust the sound, but please do so carefully when riding.
Re‐install the fairing and your system is now ready to enjoy!
This will also be the position to choose if you are using this amp to run front
speakers and lowers on an Ultra where a separate amp or radio power will
drive the rears. In "No Fader" mode a 3 position switch on the side of the
amp becomes active. This switch allows you to adjust the "balance" between
the different speakers when no fader on the radio is present as a "set it and
forget it" deal. The switch adjusts the speakers plugged into the rear channel
output of the amplifier only.
Step#6: The power harness ends in a black plug with 1 larger (10awg) red
wire, 1 larger (10awg) black wire, and 1 smaller orange wire. Locate this and
plug it into the matching black “pigtail” on the amplifier. The input harness
has a smaller black 8 pin plug with smaller gauge wire. Plug this into the
black “pigtail” socket on the amplifier marked “hi level input”. Locate the 4
pin black plug with black/brown, and black/blue wires. This will plug into the
“front out” on the amp, which is a “pigtail” ending with a 4 pin black socket.
A) If installing on an Ultra where the amp will power fronts and rears:
Locate the long "rear speaker" harness with 8 black wires in it. One end has a
white 8 pin connector that will go to the rear of the bike, the other end has
two 4 pin connectors that will remain in the fairing. One of the 4 pin connec‐
tors on this long harness will plug into the empty 4 pin plug on the input har‐
ness. It will only go on one way. The other 4 pin plug on the rear harness will
plug into the “rear out” which is a “pigtail ending in a white plug. Remember
to have the “Fader/No Fader” switch set to “Fader”.
B) If installing on a EG Classic or Street Glide where the amp will power
fronts and rears: Locate the long "rear speaker" harness with 8 black wires in
it. One end has a white 8 pin connector that will go to the rear of the bike,
the other end has two 4 pin connectors that will remain in the fairing. The 4
pin plug on the rear harness will plug into the “rear out” which is a “pigtail
ending in a white plug. The other white 4 pin plug is not used. Remember to
have the "Fader/No Fader" switch set to "No Fader".
C) If installing on a EG Classic or Street Glide where the amp will power fair‐
ing speakers, and saddlebag lid or fairing lower glove box speakers: For Hog‐
tunes lowers or saddlebag 6x9” lid speakers use the harness’s that come in
that kit. Plug the white plug on this harness into the rear out "pigtail" on the
side of the amp. If adding rears locate the long "rear speaker" harness with 8
black wires in it. One end has a white 8 pin connector that will go to the rear
of the bike, the other end has two 4 pin connectors that will remain in the
fairing. One 4 pin plug on the rear harness will plug into the "bypass out"
which is the "pigtail" with a blue socket. The other white 4 pin connector on
the same end of this harness is not used. Remember to have the "Fader/No
Fader" switch set to "No Fader". IMPORTANT In this configuration, the amp
is powering 4 speakers and the radio is powering the rears.
Before re‐installing outer fairing, turn front wheel to each extreme side
making sure any wiring is not impeding the steering of the motorcycle.
Failure to do so can result in serious injury or death!
Low Level Instructions. When this is used, we are assuming the amp is going in a
custom install. Everything you need to know to “make” the amp work is in the
manual, but the majority of info required is in this section.
The low level input on the amp uses a standard 3.5mm jack and when used, the
fader/no fader switch must go to “no fader”. All 4 channels of the amp will play,
and the 3 position switch on the side of the amp will allow volume adjustment to
the rear output of the amp.
When mounting, please give careful consideration for the amplifier to cool itself
as this amp will shut itself off as a means to protect itself if overheated. Also pay
careful attention to water or other elements the amp may see.
WATER DAMAGE IS NOT COVERED BY WARRANTY!
Power is Red and Ground is Black. The orange wire is remote turn on and
requires a switched +12 volt from the bike to turn the amp on/off.
Music Input is via the 3.5mm jack. The Black plug with blue/black and brown/
black wires is typically used for front output. Blue/black is brake side (right)
Brown/Black is clutch side (left) The BLACK WIRE IS THE POSITIVE. The amp
comes with long wires and white plugs typically used for rears. If these will not
work, you can locate the blue plug with white/black and red/black wires and use
it. Red is brake side (right) and black is positive. When using the low level input,
the bypass output on the amplifier will not work.
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