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Old 20th June 2011
ssjordan0311 ssjordan0311 is offline
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Exclamation HELP Blowing Fuses!

I need help and bad. I have had my horn system for over 2 years and it has been going strong with no problems. All of the sudden I am blowing fuses left and right. I have checked all major connections and wire splices and installed all new connections and still I am blowing fuses. Is there anyone else out there that knows what this problem may be and how do I fix it? I miss my horn.
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Old 20th June 2011
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Default Re: HELP Blowing Fuses!

Is it your main compressor fuse? Does it blow right away?

Maybe a wire is pinched somewhere. Or worn through - for instance where a wire passes through the firewall if you didn't use a grommet.
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Old 20th June 2011
ssjordan0311 ssjordan0311 is offline
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Default Re: HELP Blowing Fuses!

It is the main fuse near where I have the large gauge wires connected to the battery. No breaks or frays in the wiring, I have searched every inch. I am guessing i need a new pressure switch? or Maybe a bigger fuse but I have tried everything from 30 amp to 40 amp fuses. The compressor will come on and run until full and then the fuse blows or the next time I turn on the truck a fuse blows.
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Old 20th June 2011
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Default Re: HELP Blowing Fuses!

Is your ground solid? no paint to interfere, soild connection(not loose) and preferably water free?
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Old 20th June 2011
ssjordan0311 ssjordan0311 is offline
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Default Re: HELP Blowing Fuses!

Probably not 100% water free. I could re-check the ground. Will a faulty ground cause a fuse to blow?
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Old 21st June 2011
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Default Re: HELP Blowing Fuses!

ok....... when the fuse blows, examine the remnants of the fuse. Has it blown to smithereens or are there bobbles on the wire part of the fuse? Sometimes you can tell if it is a dead short because the fuse blows and there is not much left of it, where as a fuse that blows from overloading will have bobbles of melted metal.

The other thing to try is, when the compressor is running, feel the fuse, is it getting warm or hot? If so it could be your compressor is faulty and starting to draw more ampage than normal.

The third thing I would suggest is to disconnect the pressure switch and run a temp wire from the battery to the compressor, via a fuse and see if the compressor still blows the fuse?
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Old 21st June 2011
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Default

Hell I used 80amp fuses cuz mine kept blowing..never blew again after 80amps. Lol

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Old 21st June 2011
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Default Re: HELP Blowing Fuses!

Thanks for all the great advice. I will give all the options offered a try. Hope something works soon.
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Old 21st June 2011
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Default Re: HELP Blowing Fuses!

Quote:
Originally Posted by ssjordan0311 View Post
Probably not 100% water free. I could re-check the ground. Will a faulty ground cause a fuse to blow?
Yes. It's worth taking off and sanding it clean to be sure.
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Old 21st June 2011
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Default Re: HELP Blowing Fuses!

is it possible the check valve can cause that with some compressors?
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