Davemate Posted June 19, 2016 Share Posted June 19, 2016 My horn relay clicks when I push the button but the horn don't work Quote Link to comment Share on other sites More sharing options...
John Bonnett Posted June 19, 2016 Share Posted June 19, 2016 Hello Dave,The original relay as is the one you have has a common feed for the coil and the contacts. The lower left wire goes to the horn switch and thence to earth. So when you operate the horn switch you complete the circuit to earth and the click you hear is the closing of the relay contacts. But if there is no power out on the top wire to the horn when the horn switch is operated it does point to a problem with the relay. Quote Link to comment Share on other sites More sharing options...
GT6 M Posted June 19, 2016 Share Posted June 19, 2016 Dave, see them wee folds of metal ont frunt oft relay,then fold some back, and the innards will pull oot,then ye can see the workings,the contact plate will merst likely be corroded up,clean up wid a fine abrasive file / sandy paper/nail file.and it,ll be as good as new.same too for the bigg OD relaysM Quote Link to comment Share on other sites More sharing options...
Davemate Posted June 19, 2016 Author Share Posted June 19, 2016 I'll have a play and see. Quote Link to comment Share on other sites More sharing options...
John Bonnett Posted June 19, 2016 Share Posted June 19, 2016 For the price of a new relay I cannot see the point in trying to resurrect one that's worn out and forty years old. Quote Link to comment Share on other sites More sharing options...
GT6 M Posted June 19, 2016 Share Posted June 19, 2016 John, originality, !!!my olde OD relay, , redundant on,a J type.is powering me Spots, its quite a substantial bit of stuff wen its got intocant beat a good tinker of something in need ofa good tinkering, M Quote Link to comment Share on other sites More sharing options...
John Bonnett Posted June 19, 2016 Share Posted June 19, 2016 Quoted from GT6 M John, originality, !!!my olde OD relay, , redundant on,a J type.is powering me Spots, its quite a substantial bit of stuff wen its got intocant beat a good tinker of something in need ofa good tinkering, M Can't argue with that Markus 🙂 Quote Link to comment Share on other sites More sharing options...
TedTaylor Posted June 20, 2016 Share Posted June 20, 2016 Dave I agree with John. That relay really looks past it.I have lots of new/nearly new correct Lucas relays here - shall I bung one in the post to you?MUT Quote Link to comment Share on other sites More sharing options...
Davemate Posted June 20, 2016 Author Share Posted June 20, 2016 Ted I'll yank the relay out tonight and have a quick look,if it's beyond a 10 min fix then I'll give you a shout Quote Link to comment Share on other sites More sharing options...
Davemate Posted June 20, 2016 Author Share Posted June 20, 2016 Had a play for ten mins and no joy,still clonking and live coming out.Yes please Ted Quote Link to comment Share on other sites More sharing options...
John Bonnett Posted June 20, 2016 Share Posted June 20, 2016 Dave forgive me if you already know this but the horn relay on your car has a single 12V feed with an internal link connecting the contacts and the coil. If Ted lets you have a modern 4 Pin relay you will need to split the feed into two. In the diagram the two parallel terminals are for the coil and the other two the contacts. So you will need one feed going to 87 and one to 86. 85 goes to the horn switch and 30 to the horn. Quote Link to comment Share on other sites More sharing options...
TedTaylor Posted June 20, 2016 Share Posted June 20, 2016 Will do Dave - sort something tomorrow.John just for info, for my 'historic' cars, AFH (very early Mk1 2000) and SCG (Mk1 PI estate) I always use original Lucas cans and keep spares. For Woodie which was a much modified Mk2 estate when I bought it I am not bothered about originality to use modern plastic ones ........ out of the stock I accumulated from scrapping Range Rovers.MUT Quote Link to comment Share on other sites More sharing options...
John Bonnett Posted June 21, 2016 Share Posted June 21, 2016 Quoted from TedTaylor Will do Dave - sort something tomorrow.John just for info, for my 'historic' cars, AFH (very early Mk1 2000) and SCG (Mk1 PI estate) I always use original Lucas cans and keep spares. For Woodie which was a much modified Mk2 estate when I bought it I am not bothered about originality to use modern plastic ones ........ out of the stock I accumulated from scrapping Range Rovers.MUT You're a Wombler Ted just like me. A man after my own heart 🙂 Quote Link to comment Share on other sites More sharing options...
TedTaylor Posted June 21, 2016 Share Posted June 21, 2016 (dance)MUT Quote Link to comment Share on other sites More sharing options...
TedTaylor Posted June 21, 2016 Share Posted June 21, 2016 Posted Sent a couple, one scruffy NOS and one good s/h. Keep the one you don't use as a spare.MUT Quote Link to comment Share on other sites More sharing options...
Davemate Posted June 21, 2016 Author Share Posted June 21, 2016 Cheers Ted Quote Link to comment Share on other sites More sharing options...
Davemate Posted June 22, 2016 Author Share Posted June 22, 2016 Quoted from Davemate Ted the relay you sent has 4 terminals, the old one only has 3 Can anyone tell me how to wire it up by only using three ! Quote Link to comment Share on other sites More sharing options...
TedTaylor Posted June 22, 2016 Share Posted June 22, 2016 Ah sorry - sent you the uprated Police spec one and did not check properly Your old relay earths through the case so only uses one W wire (feed +ve).Look at the markings by the terminals. The wires go to the same relative positions as with your old three pin one.C stands for the contacts so C1 and C2 are for on and off (or if C3 this is changeover type).W stands for the windings on the operating coil connected to the switch and earth. So W1 is ground (-ve) and W2 is feed (+ve) the single wire on your old relay. To make the earth connection simply put a connection from W1 to the fixing screw.Does this make sense .......... ?MUT Quote Link to comment Share on other sites More sharing options...
nang Posted June 23, 2016 Share Posted June 23, 2016 BEEP BEEP (evil)(evil)Tony. Quote Link to comment Share on other sites More sharing options...
Davemate Posted July 24, 2016 Author Share Posted July 24, 2016 I've just had a play about with my horn.I now have a working hooter, I can't flash my main beams though Quote Link to comment Share on other sites More sharing options...
TedTaylor Posted July 24, 2016 Share Posted July 24, 2016 Probably the horn contact brush not making contact properly due to the change of wheel boss.Put an additional long momentary switch on the dash ....... while you are at it make it two - one for your co-driver! MUT Quote Link to comment Share on other sites More sharing options...
Davemate Posted August 27, 2016 Author Share Posted August 27, 2016 Purple wire goes to horn rim hidden by the steering boss Should it be live ?Mine isn't but if I send power down it then my hooter works I thought it should be live and by pushing the hooter then it's earthed out to compleat the circuit If I set it up so when a switch is thrown that 12v goes down the purple wire will it cause any problems Quote Link to comment Share on other sites More sharing options...
Davemate Posted August 27, 2016 Author Share Posted August 27, 2016 May have answered my own question :-I'm useing this relay and not the standard one C1 + C2 is fused power and power to hooter W1 Earth W2 trigger feed from hooter switch Looking at the wiring diagram the trigger wire should be live up to the hooter button and it earths out to the steering colum,so it should be live. It must take its feed internally from inside the original relay I can't see any problem with sending a live feed down the purple wire to activate the relay Quote Link to comment Share on other sites More sharing options...
Davemate Posted August 27, 2016 Author Share Posted August 27, 2016 I decided to run a new feed wire(blue), knowing my I'd blow something up if I'd run power the wrong way down a wire Quote Link to comment Share on other sites More sharing options...
Radders Posted August 27, 2016 Share Posted August 27, 2016 Dave, FFS, get that engine bay painted the same colour as the rest of the car! Quote Link to comment Share on other sites More sharing options...
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