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Electrical 2nd Gen Dodge Ram Electrical Problems and Questions.

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Old 12-30-2010, 11:48 PM
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String13 String13 is offline
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Unhappy Horn Dead Short

So, purchased an air horn that requires the compressor, yada yada; irrelevant. The switch were using is it lights up when "on" and has three terminals (Ground on the far right, A/C On in the middle, and Supply Volt on the far left.
Well, I wanted to run that horn and the factory horn to the switch so I could use both. We have terminal 86 wired to the hot wire from the steering wheel button, terminal 87 is wired to the factory horn. The 85 terminal is grounded, terminal 30 is wired with a fusable link to the battery to get 12v power. What the idea was? Wire both the compressor and the factory horn to terminal 87 and have the switch be spliced into the wire between the compressor and terminal 87 (so with the switch on, both horns will sound, with the switch off, the power to the air horn will be cut so only the factory will sound.) What we did was everything above, like connected the terminals and what not, but we didn't connect the compressor (we just wanted to see if the switch was in the on or off position, and see if it had any effect on the factory horn.) The switch lights up blue when "on", and when I first hit the horn, it lit up and the factory horn sounded. I switched it to off, hit the horn, ..dead short. Does anyone know why this might've happened? Did we forget to ground something, put wires into the wrong terminals, not use a strong enough fuse? (30 amp) We're mind boggled.
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Old 01-02-2011, 10:28 PM
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Jersey Devil Jersey Devil is offline
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First a 30amp fuse is way too big for that 20amp switch you have.
I would think somehow your feeding two hots into the switch and one to a ground. Its hard to try and figure out what your attempting without seeing it. But be careful with a 30amp fuse if the wires not rated you may have bigger problems, like fire.
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Old 10-27-2012, 09:55 PM
david60 david60 is offline
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I have a 2002 ram and my horn stoped working just checked out the horn with a battery hooked up to the horns and they work, Every time you push the pad down a relay clicks but no horn Help.....
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