10-01-2007, 03:35 PM
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CC Member
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Join Date: Mar 2006
Cobra Make, Engine:
Posts: 277
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Not Ranked
On many cars nowadays (especially non-US built), the horn and headlights are hot-wired and protected by a fuse. The horn button or light switch makes the ground to complete the circuit. I see there is no reference to a horn relay in the Haywire description of your harness. If you have tied into a ground some where, the horn will blow as long as the battery is connected. The same thing will happen if a relay (used for the horn) has welded up the contacts, and is permanently "making". Seen it happen many times.
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