P44YNE Posted May 15, 2012 Share Posted May 15, 2012 (edited) Anybody who might be able to help, I've been gifted an air horn and want to replace my standard horn with it (at least for a few weeks to show gratitude lol) but on attempt number one, got stuck because the two wires leading up to the standard horn weren't positive and negative as I'd anticipated but actually joined together inside the plug and are the sme colour. I have a relay that requires a positive and negative from the horn, a battery feed, and a connection to the air horn which in turn needs to be earthed. I think!!!Well that was the plan at least until the discovery of the two identical wires. Is that right or where moght I have gone wrong? Edited May 15, 2012 by P44YNE Quote Link to post Share on other sites
F3rAL Posted May 15, 2012 Share Posted May 15, 2012 I fitted one from ebay too, it says you need to have 30amp relay but it works fine on a factory 20a one.wire that you have are both positive, negative comes from the mount. I would suggest you just to connect it to the stock wires with stock relay and don't hold a horn on for a long time and you will be fine, if you will, you will have to change a fuse Quote Link to post Share on other sites
P44YNE Posted May 15, 2012 Author Share Posted May 15, 2012 So basically the two stock wires to positive and make an earth for the negavive terminal on the air horn. No extra relay, no extra fuse in a new fuse holder?Thanks for your help Quote Link to post Share on other sites
F3rAL Posted May 15, 2012 Share Posted May 15, 2012 Well depends what you have, my one was a simple 140db (i think) air horn, I thought I will try to connect it to the factory wiring if the fuse or relay goes I will change it but so far so good 10 months and everything is fine and I love to use it a lot I had to change fuse once, (it was a lot of traffic and ... )If you have two wires connected together and everything works that must be a positive wire. Quote Link to post Share on other sites
metalmickey0 Posted May 16, 2012 Share Posted May 16, 2012 You do know that to pass the mot you have to have a working elecrtic horn and a airhorn wont pass. thats what i`ve been told anyways. Quote Link to post Share on other sites
F3rAL Posted May 16, 2012 Share Posted May 16, 2012 Air horn will pass if it is a single tone horn, if it is a multitone horn it is illegal I was told Quote Link to post Share on other sites
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