Most likely the points are a set of contacts at the tip of a spring loaded moveable part (armature). Their purpose is to open a electric circuit through a coil when the armature is attracted to this coil and to close the circuit if the armature returns to its starting position.
Clicking is the sign for not opening the circuit, so the contacts are either welded together or wrong adjusted.[edit] or the armature can't move strong enough due to low power or mechanical failure [/edit] Adjustments affect the frequency, loudness and current draw of the horn. To keep an eye on current draw I suggest using a strong battery charger with an ammeter for bench testing.
If I remember correctly the adjustments are made at a nut and bolt at the armature (Cured my '54 3100s horn from clicking last year)
Last edited by Helmut Barth; 02/01/2017 10:58 AM.
