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Step#5: Locate the silver “posts” with the hex key opening and put silver 
lock washers and washers on them. Place  an 0902-AA speaker into open-
ing in adaptor. Start each thread into the brass inserts in the angled 
speaker holder BY HAND!!!!! After all the threads are started, use sup-
plied hex key to tighten speaker into place. Press the grill into place by lin-
ing up the holes on the inside of the grills on to the silver posts. 

 

Step#6: Once everything is complete in both lowers, use the supplied wire 
ties to secure the exposed speaker wires to the crash bar. Moving back into 
the fairing, use supplied wire ties to secure the FLSK/AMP harness to the 
bike.  

 

Step#7: Turn the stereo on, and test to make sure all 4 front speakers are 
working. The front speakers will turn on immediately, and the fairing 
lower speakers will turn on after the amplifier delay of about 2 seconds. On 
the clutch side of the amplifier is the amp level. Adjusting the amp level 
sets the “balance” between front and fairing lower speakers. It is recom-
mended that you start with the level at “0” and turn up (+3)or down (-3) if 
desired. Re-install the seat making sure the amplifiers “+” and “-” connec-
tors are positioned in such away so they will not bend or break when the 
riders weight is on the seat.

 

Note: Sound quality is best with the fairing 

mounted and secured on the bike. Re-install the fairing.  

 

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 se-
rious injury or death!  

 

Adjusting the bass levels: The USA 24.2 Ultrasound™ Amplifier yields 
HUGE bass due to the MaxxBass

®

 feature. On Radio Sound

®

 radios, 

between 5-6  “bars” is all that is needed on the bass level screen. On 
Harman-Kardon

®

 radios, 4-5 bars is what we have found works best. This 

is a suggestion only. Adjust the system for what sounds best to you! 

 

When washing your bike, water may collect on speakers in lowers. Gently 
wipe of with a soft cloth before playing and all will be OK! 

 

Warranty Information: 

 

Hogtunes speakers are warranted for a period of 20 years to the original pur-
chaser. Hogtunes Amplifiers are warranted for 1 year from original purchase 
date. Proof of purchase is required for all warranty claims. All Warranty 
claims must be made through the dealer this product was originally purchased 
from. Speakers found to be defective during the warranty period will be re-
paired or replaced (with a product deemed to be equivalent) at Hogtunes sole 
discretion. Amplifiers will be repaired.

 

 
 
 
 

Step #3: The amplifier gets mounted to the top of the factory radio using 
the supplied “hook and loop” adhesive, and must sit so you can read the 
text on top of the amplifier as in diagram 1.1 .The amplifier needs to mount 
as far back on the radio as possible so the fairing can go back on. The mini-
mum distance from the back of the radio to the most forward edge of the 
amplifier is 5/8” (15mm). On pre-2006 model bikes, it is a tight fit--but will 
go. Advanced Audio radios in 2006 and newer Ultras have the CB Radio 
mounted on top of the radio. The supplied hook and loop adhesive is strong 
enough to have half the amp sitting on top of the CB radio. 2006 and newer 
bikes non-Ultras have a “bump” on top of the radio that runs from front to 
back down the center of the radio. Cut the hook and loop adhesive in half 
and apply on either side of the bump. The amplifier will then mount flush. 
Note: Most adhesives work best at room temperature or higher.  

 

Wire Color Codes:  

 

Yellow/Black:          Clutch Side Amplifier Input From Factory Radio 
Brown/Black:          Clutch Side Radio Output to Front Speaker 
Green/Black:           Brake Side Amplifier Input From Factory Radio 
Blue/Black:              Brake Side Radio Output to Front Speaker 
Orange:                    Remote Turn On Lead  
Red:                          12v Positive--Attaches Directly to “+” Battery Post  
Black:                       12v Negative--Attaches Directly to “-” Battery Post 

 
 

Wiring the Amplifier:  

 

Step #1: Plug the 2 connectors of the main wire harness into “Power” and 
“Audio Input/Output” on the amplifier. Tighten (snug) the 2 small flathead 
screws on the power connector to prevent it from backing out while riding.  
 
 
 
 
 
 
 
 
 
 

 

Step #2: Locate the yellow/black pair of wires with the male connectors. Un 
plug the factory speaker wires on the clutch side of the bike and plug the 
yellow/black wires in to those. They will only go in one way. Locate the 
brown/black pair of wires and plug them directly onto the clutch side 
speaker--again--they will only go on one way. 

    

 

 

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