288 MG Tech | Lucas Windtone Horns 

5:24 The little round thing held in place by a six point star is not a capacitor. It is a resistor for spark suppression to reduce contact erosion and radio interference. On one of my 12V windtone horns it measured nine ohms. I plotted current versus voltage to see if it was some sort of semiconductor overvoltage suppressor but it came out a straight line - so simply a resistor.

Thanks very helpful, got my whintone working again.

these are d world best horn

Am trying to get my hands on a pair of these for quite some time

Thank You, been sitting on a old horn, going to experiment see if I can connect it to me jeeps 😊

well done

Hi John, what should the points GAP be please. & polarity of the connections in your video.

Any tips on locating replacement points?!

Thanks - going to give this a try today, when you connect up the 12v supply, can you advise which side is positive vs negative?

Is this a 12 volt Horn? Also, which is positive and negative? Did you put the positive on the horn first, then sound the horn with the negative?