MGF / TF horn

Two of them in the bonnet (One only with the MGTF). One high sounding and another deeper.
If there is one failing then it needs replacement. See it from inside below.
YEB100780 Horn Low note is always installed
YEB100770 Horn High note is at MGF/TF until VIN 606594 only :)

An der Unterseite eine Justageschraube (Torx) versteckt hinter weissem Kitt. Die ist zur Justage des Kontaktabstandes an dem Türklingel ähnlichem Unterbrecher. On the bottom is an adjustment bolt hidden behind white mastix. (Torx head screw)
It is to adjust the contact distance of the 'door bell' like interuption contact.
Das Oberteil halbiert half cutted upper case .
   
Resonator ab removed resonator
Membran entfernt Membrane removed
Membran mit Anker Membrane with steel part (moves in the coil up and down)

Unterbrecherkontakt wie bei einer alten Türklingel.
Links die Einstellschraube
Mittig der Kontakt
Rechts der Festpunkt der Blattfeder

Interruptor contact (relay) like at a door bell.
- LH the adjustment screw
- Centre the contact
- RH the fixture of the contact blade
The white plastic part is the coil

Niet ausgebohrt Rivet drilled off and ...
Kontakt platte entfernt. ... the fixed contact removed
Insulation plate visible.
der untere bewegte Kontakt Lower 'moving' contact
Ziemlich vergammelt ;) Lot of corrosion
Die Spule The coil

Pictures courtesy Lutz

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