Broken Horn problem solved? Thought i would share - Ford Powerstroke Diesel Forum
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post #1 of 1 Old 10-26-2011, 12:28 PM Thread Starter
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Broken Horn problem solved? Thought i would share

This could be a help to others maybe in the future i am not sure, but i will share my long struggle with this dang horn and electrical issue.

I figured out awhile back that my windshield was leaking and the water was landing right onto the GEM and Fuse panel under the dash causing a possessed truck. Such as the horn going off randomly at night til the dome light is turned on, hvac fan running, radio running, windshield wipers running. This is all happening when the truck is not even on. After i got the windshield properly sealed i havn't had these issues.

Now that inspection time has come around i couldn't get my horn to work for the life of me. Changed out the horn, relay, fuses, checked the grounds, but then i finally took out the entire fuse panel under the dash to find water damage and corrosion. After a lil cleaning the horn worked once again.

But the kicker to this mystery is that i cannot put the fuse panel cover back on (the little black cover the says the relay #s and covers the fuses). When i put the cover on the relay will click but wont let any power to the horn. When the cover is off it works perfectly fine. All i have to do is push in the bottom part of the panel right under the bottom fuses and the horn will not sound. Wierd little mystery.

I believe i will buy a new fuse panel just to insure that i don't have any other electrical mysteries in the future, expecially something more important than my horn.

Hope this helps somone in the future and saves a little bit of time and sanity


99 F-350 7.3 turbo diesel ext cab 4x4
All terrain tires
Hypertech Power Programmer III
Hurculiner on entire bed
Tonneau cover
fog lights
4" Straight turbo back exhaust
DIY Tymar Intake
wastegate delete
ISSPRO triple pod guages
Much more wanted but $ plays a big factor in college
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