Area Representative Kingsley Young Posted August 1, 2017 Area Representative Share Posted August 1, 2017 If I was to change the hooter for air horns , is it a simple swap of the terminals from existing horn onto the compressor ?Kingsley. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted August 1, 2017 Member Share Posted August 1, 2017 What's the nominal current rating on the new compressor/ horns? You might need a relay.JonathanPS: I'm still interested in a cheap lightweight "horn" if anyone can find one. I think that DJ.'s above were the best that came up in previous discussions... Link to comment Share on other sites More sharing options...
DJ. Posted August 1, 2017 Share Posted August 1, 2017 I fitted some PIAA horns, they are really loud and weigh less than the originals. They were a straight swap on the Caterham mount too http://m.ebay.co.uk/itm/PIAA-Dual-Tone-Horns-Kit-400Hz-500Hz-With-Weather-Resist-Cover-Twin-Pack-HO2E-/251930789042?hash=item3aa83ec4b2%3Ag%3A5dgAAOSwyDxXhJfZ&_trkparms=pageci%253Ac99bd71e-7689-11e7-a7e9-74dbd18007ba%257Cparentrq%253A9caa238415d0aa1301f3c358ffff991c%Edit: swapped to PC to get the link to work- Blatchat is still crap on a phone. By the way, when I took the car for its MOT, they said they were the loudest horns they'd ever heard. Link to comment Share on other sites More sharing options...
SM25T Posted August 1, 2017 Share Posted August 1, 2017 I added a 4 pole 12V relay with a fuse to feed a new supply to the compressor as it takes a fair current. Use the existing cable to switch the relay. Or run a new one ... It may be easier. Recall maybe the horn button is fitted to the earth ground side rather than the +12V .... ? All in all a simple job .... and triple air horns make people notice ! Link to comment Share on other sites More sharing options...
Area Representative Kingsley Young Posted August 1, 2017 Author Area Representative Share Posted August 1, 2017 Thank you guys for your comments, DJ. they look very good had not thought of a dual horn and may be easier to fit. Sorry for not responding earlier , but we are on holiday and have been out for the day. Kingsley. Link to comment Share on other sites More sharing options...
Tony Whitley Posted August 1, 2017 Share Posted August 1, 2017 Comparison with standard Jeep horn Link to comment Share on other sites More sharing options...
John Vine Posted August 1, 2017 Share Posted August 1, 2017 I'm still interested in a cheap lightweight "horn" if anyone can find one.I fitted a pair of these after one of my original horns failed (as discussed here). They're cheap, cheaply made, but LOUD, probably making an air-horn unnecessary.You'll need a bit of extra wiring as the body of the horn doesn't connect to earth.JV Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted August 1, 2017 Member Share Posted August 1, 2017 Thanks, John.You'll need a bit of extra wiring as the body of the horn doesn't connect to earth.And a multimeter?Jonathan Link to comment Share on other sites More sharing options...
TomB Posted August 1, 2017 Share Posted August 1, 2017 I fitted those Amazon ones a couple of years ago and they are fab. Basically a Chinese copy of PIAA air horns. They are fairly compact, fit the standard horn brackets and are quality tin top loud. Due to the absence of plastics and plenty of space, they work very well. As above, you just need a short Earth cable from the terminal on the horn to the steering rack bridge. Link to comment Share on other sites More sharing options...
vertew Posted August 2, 2017 Share Posted August 2, 2017 I fitted Stebel Nautilus Compact horns to both 7s I've owned. Youtube example . This is relatively small, so fits to a 7 fairly easily, though does need a high-current supply / relay (included in kit). The sound is really quite impressive and the few times I've needed to use it, I've had no problems being noticed! Link to comment Share on other sites More sharing options...
JNC Posted August 2, 2017 Share Posted August 2, 2017 Vertew, where and how did you mount the Stebel horn ? Link to comment Share on other sites More sharing options...
BigCol Posted August 2, 2017 Share Posted August 2, 2017 What John Vine said in post #7 and TomB in post #9...I bought a pair of these a couple of months ago and have only just around to fitting them... wow... proper car noise rather than the puny standard horns and all at an amazingly-low price. Does need an earth cable and a wait for them to come from China but well worth it! Link to comment Share on other sites More sharing options...
Alan Archer Posted August 2, 2017 Share Posted August 2, 2017 Hopefully this will put the question of whether you need a relay or not to bed. After ordering the PIAA horns yesterday, I wanted to know if I needed to bother with the relay, having read DJ's post I messaged him asking the question, his reply and link below should give you all the answer. Thanks DJAs you asked, I thought I'd better check, and I've found an old thread where a chap connected his horns to a spare battery with an ammeter and he found about 5amps for both horns : http://www.fjrforum.com/forum/index.php?showtopic=114732 Link to comment Share on other sites More sharing options...
vertew Posted August 2, 2017 Share Posted August 2, 2017 Hi John,The horn is 'suspended' by a simple fitting with a single bolt, so would typically be mounted to a hole drilled in flat plate. Not too many flat plates on a 7, so I fitted mine with a spare and suitably sturdy bike light / handle-bar mount and hung it from an upper chassis tube inside the nose cone. Could also see an option to make up a simple metal bracket to wrap around a frame bar.For the high-current power supply - the horn draws 18A (info from Stebel site here). I ran a new +25A wire with in-line fuse direct from battery.For the switch circuit - the Stebel horn is fitted right next to the original horns (which I left in place), so just use the original +12V horn power wire to power the relay switch.Then connect power and switch circuits to relay, then feed to horn + earth and that's it.There are various install vids on youtube (eg. ) which given an indication of how the mounting bracket works. tks, Andrew. Link to comment Share on other sites More sharing options...
JNC Posted August 2, 2017 Share Posted August 2, 2017 Thanks Andrew, I've had one of these in my stock box for ages I can't remember what car I bought it for but thought it would be good for the cat , but after searching around the engine bay it was confined back to the box ! I did see one mounted on the bulkhead but I thought it would crack it in no time so decided against that ! , so after seeing you have fitted one my interest was how and where you fitted yours.Thanks John Link to comment Share on other sites More sharing options...
Blue C7 Posted August 3, 2017 Share Posted August 3, 2017 I also fitted a Steibel horn. Made a triangle plate , bent at 90 degrees and drilled to fit the original horn studs with a single hole at the top of the triangle for the horn. Link to comment Share on other sites More sharing options...
Edzup Ezzer Posted August 4, 2017 Share Posted August 4, 2017 I fitted a similar Stebel Nautilus horn several years ago. I bolted in it place of the original horn on the cross member behind the steering rack. Very neat package with the horn pointing downwards to avoid water collection. As above I used the original horn circuit to switch a relay and took a supply directly from the battery, with an in-line fuse very near the battery for protection. It's loud and has worked fine for years. I even have a spare if anyone is interested (for a mutually agreeable sum) which I intended to fit to my daily drive (a VW Golf) but gave up on the idea as installation was going to be a lot more difficult than the Seven. Ezzer Link to comment Share on other sites More sharing options...
Doc007 Posted April 26, 2023 Share Posted April 26, 2023 DJ, do any changes need to be made to the wiring to fit the PIAAs? Link to comment Share on other sites More sharing options...
Area Representative Kingsley Young Posted April 26, 2023 Author Area Representative Share Posted April 26, 2023 No you don't they are a straight swap !mine were just spade connectors. Kingsley Link to comment Share on other sites More sharing options...
Doc007 Posted April 26, 2023 Share Posted April 26, 2023 Thanks! Link to comment Share on other sites More sharing options...
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