Hogtunes NCA 450U Kit-RM : 4 Channel Amplifier / Speakers (2014 - model year) - Manual (Page 4)

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Step #3: Installing the new speaker: With the cabinet removed from bike,
undo the four screws that hold the factory speaker to the cabinet.
Carefully take off each speaker wire by disconnecting one at a time.
Take a Hogtunes speaker and re-attach the factory speaker wires noting
they will only go on one way. Make sure to use the model 362F-RM
speakers (with larger magnets) for the fronts! The #1 reason for tech
related calls is loose wires at the speaker which is why we designed the
self-locking clips on the speaker frame. Using the factory screws, attach
the Hogtunes speaker to the cabinet noting that there is a locator “peg”
on the cabinet and a hole in the speaker’s frame which needs to line up
so the speaker sits flush to the cabinet. Bass response will be greatly re-
duced if the speaker is not flush to the cabinet! The factory speaker grill
must be removed and replaced with the supplied metal mesh grill using
the three factory screws on the inside of the fairing. On the factory grill,
you will see two round holes and one “keyhole” where the screws go
through and into the fairing. The keyhole on our grill needs to go in
the same spot for proper fitment of the new grill! With the new grills in
place and the speaker properly attached to the speaker cabinet, the
cabinet can be re-installed to the bike. It’s always a good idea to put the
factory fasteners back in to specified torque.
Repeat Step #3 for the second cabinet. Make sure to plug the power
cable back into the power port/cigarette lighter assembly on the brake
side. If your bike has the CB module, make sure to re-install the antenna
cable and main harness.