StarletIrl Posted August 5, 2020 Share Posted August 5, 2020 Hi, Having an issue with my Starlet P7 horn. The horn works when wired to a positive and negative of the battery but when I plug it into the car nothing happens. I checked the earth, fuse,wiring and changed the switch assembly behind the steering. It didn't solve the problem. Any ideas? Quote Link to post Share on other sites
5T4R7ET N/A Posted August 5, 2020 Share Posted August 5, 2020 The horn on steering wheels normally just work when the earthed. make sure the earth connection is good on steering column The horn itself has a power supply and bracket is earthed to the body of the car. hope that helps Quote Link to post Share on other sites
StarletIrl Posted August 5, 2020 Author Share Posted August 5, 2020 I thought it was the aftermarket steering wheel causing it, so changed back to the oem wheel and problem still occurred. So I tired wiring it up separately to a 4 pin relay but the relay clicks but no horn and when I earth the horn on the body its on constant. Maybe I done it wrong. Would one of the two connections on the horn button be an earth? Quote Link to post Share on other sites
5T4R7ET N/A Posted August 5, 2020 Share Posted August 5, 2020 Try just to earth the horn button. The horn Button should not need a live feed as gets power from the relay. Quote Link to post Share on other sites
StarletIrl Posted August 20, 2020 Author Share Posted August 20, 2020 I've it wired up to a switch, when I press the switch the relay clicks but no horn working. If I earth the horn on the body it works constantly Quote Link to post Share on other sites
ChristopherEP70 Posted August 24, 2020 Share Posted August 24, 2020 Instead of a relay you could just wire it to a switch, have an in line fuse and should be fine Quote Link to post Share on other sites
maerijn Posted August 25, 2020 Share Posted August 25, 2020 try a different relay? Quote Link to post Share on other sites
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