| nighthawk 550 electrical problem [message #454976] |
Tue, 27 September 2005 02:07 |
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jlpridge Wrote:
> Krusty,
>
> I just checked the resistance on the three yellow leads from
> the stator again and this time put the setting on the lowest setting.
> Once I did this the resistance measured .5 on all three leads. Maybe it
> is a bad connection. But where? The symptoms are strange in that the
> bike is erratic. Once it warms up it will run good and allow you to rev
> the engine above 2000 rpm. Before it is warmed you cannot exceed 2000
> rpms. The funny thing is that after riding it for a few minutes it goes
> back to the way it runs when cold. I am stumped. I have checked every
> ground and they all seem well connected and clean.
Krusty,
Part B of further testing. I just finished testing that
involves the switched 12V supply input to the rectifier and based on
the results I got the electrex chart says that I have a bad connection
from the battery(+) through the ignition switch to the rectifier. It
just so happens that they say this is the most difficult to find. Any
advice would be most helpful.
--
jlpridge
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| Re: nighthawk 550 electrical problem [message #454978 ] |
Tue, 27 September 2005 05:44 |
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jlpridge wrote:
> Part B of further testing. I just finished testing that
> involves the switched 12V supply input to the rectifier and based on
> the results I got the electrex chart says that I have a bad connection
> from the battery(+) through the ignition switch to the rectifier. It
> just so happens that they say this is the most difficult to find. Any
> advice would be most helpful.
The DC output from rectifier ordinarily goes straight to the battery
positive terminal, and another wire will go to the main fuse in the
fuse block. From there, the power will normally go to the ignition
switch, and when you turn the ignition switch on, power will go back to
the other fuses in the fuse box.
If the DC power has to go through the ignition switch before it can get
back to the battery, that means you would have up to 25 amps at 12
volts going though the ignition switch!
I recommend verifying Electrex's assertion involving the ignition
switch by studying the wiring diagram in your owner's manual. If the
battery charging current does in fact go through the ignition switch, I
recommend touching the back side of the switch very carefully after the
engine has been running a few minutes. If the wires on the switch are
getting hotter than hell, the switch may be your problem. I have burned
up two ignition switches on different vehicles before...
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