1999 Honda Passport 2 same fuses, keep blowing

1999 HONDA PASSPORT
160,000 MILES • 6 CYL • 4WD • AUTOMATIC
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BGTLTM
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How can I find what is causing both the horn and foglights fuses to keep blowing. As soon as I replace the fuses and turn the key, both fuses immediately break.

Thanks,
Tom
Nov 19, 2009 at 6:47 PM
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KHLOW2008
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Hi Tom,

The horn fuse is shared by the following :

Alarm & relay control
Security horn
Datalink connector
Alternator ( 3.2 L). This is the most likely cause as it is affected by the ignition switch power. Try unplugging the alternator wire connector and testing.

The fog light fuse is independent of the ignition switch and I could not find any relations between them so it is surprising that the ignition switch is affecting it. Unplug the fog light relay and retest.
Nov 24, 2009 at 9:36 AM