DirtTorpedo Posted May 30, 2003 Share Posted May 30, 2003 My air horns were great when they worked, but last week they stopped working. I checked all the connections. I have it hooked up through a relay. When I push the horm button I can hear the relay click, and verified 12V coming out the wires hooked up to the air compressor with a voltmeter. I always thought electric motors were too simple to break, but I ordered a new one anyway and just hooked it up tonight. Same thing. I am getting voltage, but the compressor shows no sign of life. While it's possible I got 2 bad compressors in a row, the more likely explanation is I'm overlooking something obvious. What am I overlooking? Ted p.s. Got cut off last week and couldn't even blow my horn at the assole. That sucks. I have to get this thing working again. Quote Link to comment Share on other sites More sharing options...
CALCXX Posted May 31, 2003 Share Posted May 31, 2003 Good advice Joe, 1-hot (positve) To the compressor lead 1-ground (negative) lead to compressor frame, unless compressor has 2 leads marked pos.and negative. Then connect accordingly, If it does have 2 leads, and it still don't work, you could possibly have the polarity reversed. It's possible to have another bad compressor, but not very likely. If you have an OHM meter. take a measurement between the positve and negative at the compressor with the battery disconnected. An open reading means "bad". If the compressor has a rated current draw, tell me and I will apply OHM's law and will let you know what the resistance reading should be. Later, Cal Quote Link to comment Share on other sites More sharing options...
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