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My 89 wrangler horn is not working. what should I do first

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Assuming the fuse is ok,(thinking it's dome light also)
Unplug the horn itself and check for 12 volts when the horn is applied.This will check the horn .
If there is no power there,you will have to check either at the steering column connector,(for ground when the horn is applied)
Or at the relay for ground on the control side and 12 volts on the
output side.
You should be able to hear the relay click when the truck is off(ign,on) That's a much easier way to check the relay!
I would more suspect the horn itself ,due to winter salt and such.

Posted on Apr 07, 2011

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