Switchable Hot Lead from
the Headlight Nacelle
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When you need it hot!
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Us Road King Riders who like to have our gadgets and gadget
chargers with us on the road, often find it desirable to have a hot lead
on the bike without the need for the ignition being on. And those of us
with gadgets on the bars often want a full time hot lead inside the
nacelle, to avoid stringing new wires back to the battery.
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The accessory switch on the nacelle provides
power to a four pin Deutsch connector located just in front of
the battery compartment under the seat. This connector carries
leads for running lights, brake lights, ground, and auxiliary
power from the nacelle switch, which normally requires that the
ignition be either on or in the accessory position. The drawing
and description below will show you how to eliminate the
ignition switch from the process, and provide power to the
connector any time you want it.
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The nacelle switch draws it's power from a 10 or
15 amp accessory fuse at the fuse panel (behind the left side
cover) through an Orange wire with red tracer. What you want to
do is relocate its power source to the hot side of the main
breaker, so the switch will not require the use of the ignition
switch to operate.
This allows you to power a GPS, radio, or cell
phone charger while the bike is turned off, but still allows you
to switch the power on and off via the nacelle switch.
This is done by cutting the Orange and red wire
loose from the fuse panel, and either re-routing it or extending
it up to the hot side of the main breaker.
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Click image for larger view
Click here for
larger Component Layout Diagram Below
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The blue wire shown above is the added extension to
connect the orange with red tracer wire to the main breaker hot
lead. An alternative method would be to pull the orange and red
wire from an opening in the protective sleeving under the seat
and just route it over to the main breaker. Either way, be sure
to add an inline spade fuse of 10 or 15 amp rating to the wire!
Alternatively, you can slice open the
sleeving further up the line and cut the Orange and Red wire
there, leaving plenty of wire left from the fuse in case you
ever want to put it back the way it originally was, or use that
fuse circuit for something else. (Just make absolutely sure you
are cutting the correct wire!!!!
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If you want switchable power at the nacelle, you can simply tap into
the orange wire from the switch connector (on the bike harness side!),
and if you should need a full time hot source in the nacelle
without the benefit of a switch, you can tap into the Orange with red
tracer wire at the same area (this is not recommended).
Now you can charge your cell phone or iPod while you're having lunch,
or leave your GPS on the whole day without having to switch it over to
battery backup when you stop for a break.
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