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Lucas horn not working.
https://ausmini.com/forums/viewtopic.php?f=2&t=93908
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Author:  milton s [ Mon Oct 03, 2016 12:57 pm ]
Post subject:  Lucas horn not working.

Polished up my Lucas horn from black to a nice and shinney finish now it doesn't work.
When I first mounted back on the car it worked but only just, very faint and sounded as if it was under water.
So I played with the flat screw on the back hoping to adjust or something and now its shorting somewhere because as soon as I plug it in I blow the fuse. Looks great though haha.
Anyone help me? Can you still get them, or can mine be fixed? Or does someone have one for sale?
My car is a 1970 mk2 cooper s.

Author:  DavidE [ Mon Oct 03, 2016 2:42 pm ]
Post subject:  Re: Lucas horn not working.

milton s wrote:
Polished up my Lucas horn from black to a nice and shinney finish now it doesn't work.
When I first mounted back on the car it worked but only just, very faint and sounded as if it was under water.
So I played with the flat screw on the back hoping to adjust or something and now its shorting somewhere because as soon as I plug it in I blow the fuse. Looks great though haha.
Anyone help me? Can you still get them, or can mine be fixed? Or does someone have one for sale?
My car is a 1970 mk2 cooper s.


What process did you use to make it bright and shiny?

Author:  milton s [ Mon Oct 03, 2016 5:40 pm ]
Post subject:  Re: Lucas horn not working.

Paint stripper,polishing mop on my bench grinder and elbow grease.
I goggled Lucas horn repair and learnt a little about them. So I opened mine up and the flat screw on the back that I adjusted was adjusting the contacts. So by screwing all the way in I think i've created the short. Nothing seems fused at all but I don't know where this screw should be adjusted to. It still doesn't work.

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