stevie_b Posted July 22, 2007 Share Posted July 22, 2007 I recently fitted a second-hand horn (the upper one that sits just to the left of the bonnet catch). Do they often have bad earths? The horn was working up to about a month ago, but doesn't any more. I've checked the signal to it, and the loom side of the connection sees 12.75v when I press the horn button. Either: 1) the +ve signal insn't getting to the horn unit itself: unlikely because the connector seems to be in good nick and not rusty. 2) the horn isn't getting a good earth via the metal strap. Posible, but I've tried running another (somewhat heath-robinson)earth, and the horn still didn't work. 3) the horn unit itself has given up. Possible I suppose. I guess I need to test it by connecting it directly across the battery. Quote Link to comment Share on other sites More sharing options...
robin Posted July 22, 2007 Share Posted July 22, 2007 Can you measure the voltage at the horn itself while somone else pushed the button? tbh I would expect the horn itself has died. Quote Link to comment Share on other sites More sharing options...
stevie_b Posted July 22, 2007 Author Share Posted July 22, 2007 Tricky to measure directly. You can't access the signal wire without removing some flex. Quote Link to comment Share on other sites More sharing options...
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