Craig98sxr 0 Posted October 23, 2019 Report Share Posted October 23, 2019 Hi all, Not a big issue and still working on it but have just installed air horns [ eBay cheapies but heaps better than standard ] to work via the factory horn button and not sure if it's my wiring or the cheap relay but when I hooked up the factory cable to the relay for the air horns it operated fine 3 times then blew the 7.5 amp fuse under the bonnet no spares the right size so temporarily used a 15 amp fuse & now works fine but the relay is heating up and staying hot while the wiring is connected. Is there maybe a residual current in the factory wire? Now thinking try new Hella relay and if still an issue then a spring loaded switch on console or dash in one of the blanks I think. Anyone have any idea's or experience to offer. Thanks in advance, have looked at a lot of internet stuff but couldn't find anything specific to our cars. Quote Link to post Share on other sites
marks_2_sparks 8 Posted October 23, 2019 Report Share Posted October 23, 2019 Without knowing anymore information I think you need to check how you wired the relay. Sounds like you might have the relay constantly turned on and be powering the air horns with the factory horn wire. Was it the aftermarket fuse that blew or one in the fuse box? Quote Link to post Share on other sites
Craig98sxr 0 Posted October 23, 2019 Author Report Share Posted October 23, 2019 The one in the fuse box blew, I've rechecked the wiring but anythings possible, also its a cheap no name relay that came with the horns I'll keep on it over the next few days. Main power came in on pin 30, air horns power on pin 87, earth on pin 86 and horn button [ power when button pushed ] on pin 85. Any suggestions welcome Thanks Mark Quote Link to post Share on other sites
Craig98sxr 0 Posted October 25, 2019 Author Report Share Posted October 25, 2019 Just closing this off. Bought and fitted a good quality 30 amp relay [ Tridon brand ] and all issues solved - works perfectly - no fuse problems and no heat in relay at all so cause must have been the cheapie relay that came with the kit, pity as the horns are really good. Thanks for the interest and advice. Quote Link to post Share on other sites
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