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Electrical delima ????????

Yahoo Message Number: 11692
2007 diesel----

Equiped with a WOLO twin trumpet air horn mounted behind the front bumper. Suddenly, the air compressor started making a grinding sound when the horn was blown but no sound coming from the horns.

While waiting on a new comperssor to arrive, the light would not go off indicating the parking brake was still applied, the cruise would not work and the electric seats would not function.

Sure that a fuse was blown but after checking every fuse that could be located, no blown fuses were located.

Unpluged the wires from the compressor and everything worked as intended.

We were going on a 4 day trip and needed a horn, borrowed a regular horn from an S-10. Plugged it up and everything worked fine.

Returned from the trip and unloaded. This afternoon moved to our parking garage and the same gremlin appeared. However, this time the regular horn blows but the parking brake light, cruise and seat are not working. Quickly glanced at the fuses but can't find one blown.

Guess take a longer look this weekend but to say the least it is strange.

Anyone have any ideas? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

Thanks,

Don

Re: Electrical delima ????????

Reply #2 –
Yahoo Message Number: 11694
Maybe so but how would that have any effect on the system as the compressor is laying on the garge floor and not connected but the same effect as is it were connected.

Re: Electrical delima ????????

Reply #3 –
Yahoo Message Number: 11695
with out a meter I can't tell for sure, but if the compressor shorted and heated up the wire powering it, that may have melted enough insulation that you're getting "cross talk".

To: KodiakChassisClassC@yahoogroups.com
From: dgryder@...
Date: Fri, 9 Aug 2013 08:29:58 -0400
Subject: Re: [KodiakChassisClassC] Electrical delima ? ? ? ? ? ? ? ?


Maybe so but how would that have any effect on the system as the compressor is laying on the garge floor and not connected but the same effect as is it were connected.

Re: Electrical delima ????????

Reply #4 –
Yahoo Message Number: 11699
What do you mean by "the light would not go off indicating the parking brake was still applied"? What light are you talking about?

Re: Electrical delima ????????

Reply #6 –
Yahoo Message Number: 11701
Did it all start at the same time or are these thing you have noticed right along? Looking at the schematics I don't see nothing those circuits have in common. As for the red dash brake light, it could also mean your brake fluid reservoir is low; might want to check that. Several things could be causing the cruise control not to work. As for as the power seat goes, the factory manuals has zilch in regards to electrical power seats, they only have air suspension type power seats.

Re: Electrical delima ????????

Reply #7 –
Yahoo Message Number: 11702
Yes, all the items started the same time and stopped the same time when the original air horn was unplugged.

Later today, I plan to unplug the horn and see what happens then.

Thanks
Don

Re: Electrical delima ????????

Reply #8 –
Yahoo Message Number: 11703
I went to the garage and unplugged the horn from the Chevy S-10 we installed. When I unpluged it, everything began working.

Is this strange or what? ? ? ? ? ? ? ? ?

Thanks,

Don

Re: Electrical delima ????????

Reply #9 –
Yahoo Message Number: 11704
Is the connection for the horn stock or has it been modified for the air horn?

 

Re: Electrical delima ????????

Reply #11 –
Yahoo Message Number: 11709
It acts like the positive side of the horn circuit is shorted and drawing power from the other circuits when it grounds through the horn. Test for voltage at the horn wire (horn disconnected) and then disconnect fuses unplug and wiggle test things until the voltage disappears. Start with anything that has been worked on or modified previously. It probably is low amperage or the horn would be on all the time.

Dan