Voxbell repair & connections

carlitox33

carlitox33

Full member
Location
Madrid, Spain
Lots of threads about repairing Voxbells, but I have 2 questions, and I don?t want to refloat a 20th century thread. Mi 1200TS has only 1 voxbell horn, fitted to the lower left side of the engine, with 4 spade connectors, and only two cables for horn operation. It doesn?t work. I?ve taken the rivets out, and opened the "thing".

Questions:

1.- considering I only have 2 cables, in which of the 4-spade connectors should I plug them? Are these 2 cables + and earth?

2.- The "points" inside are permanently in contact. If I press down the lower part, they separate. I see that the "lid" has a metal part that presses down the bottom part, but it doesn?t seem to touch it. Any ideas here? I?ve tried connecting 12v while "lowering" the bottom part, but have not been able to honk at all, probably related to #1 (although have tried several combinations).

Thank you!
 
4 pin horn is Basso and 2 pin horn is Alto regarding sound.
Throw it away and buy a new pair, easier in the long term.
I have had varied success repairing these contraptions and now just buy new.
If you want to persist then connect one wire to one pair (connected to horn by a rivet) and the other wire to one of the other pair of pins.
 
The 4 spade connectors are in fact 2 pairs of 2.  So if you imagine them numbered 1 to 4 then connect your two wires to 1 and 3 or 2 and 4.(1 and 4 or 2 and 3 will also do the same thing!!)

Before doing that, check that one wire has 12v on it when the ignition is turned on (should be the black wire).  Check that the other wire has no volts on it and that it connects to earth (zero resistance to battery negative) when the horn button is pressed. (ignition does not need to be on for this)
 
just put Fiamms, Hella or these Bosch ones  on ,least you"ll be heard!

http://www.carparts4less.co.uk/search/442770010?gclid=Cj0KEQjwmcTJBRCYirao6oWPyMsBEiQA9hQPbt1eTpuKaAyKWSfgNR9PAGWx6ijb8QOCcee0w1-CdiYaArzp8P8HAQ

 
carlitox33 said:
Lots of threads about repairing Voxbells, but I have 2 questions, and I don?t want to refloat a 20th century thread. Mi 1200TS has only 1 voxbell horn, fitted to the lower left side of the engine, with 4 spade connectors, and only two cables for horn operation. It doesn?t work. I?ve taken the rivets out, and opened the "thing".

Questions:

1.- considering I only have 2 cables, in which of the 4-spade connectors should I plug them? Are these 2 cables + and earth?

2.- The "points" inside are permanently in contact. If I press down the lower part, they separate. I see that the "lid" has a metal part that presses down the bottom part, but it doesn?t seem to touch it. Any ideas here? I?ve tried connecting 12v while "lowering" the bottom part, but have not been able to honk at all, probably related to #1 (although have tried several combinations).

Thank you!
Click to expand...

The horn will not work without its "lid".  The lid is actually a spring that is pulled inwards by an electric magnet/solenoid, which in turn is switched off by the travel of the lid.  This on/off/on happens at a high frequency, which creates the sound.

Follow the given advice and throw them away, investing such an amount of time in attempting a repair is pointless when compared with the price of new ones. 

The type currently available seem to draw a little more current than the originals, you might find you'll need to wire them through relays to get them working.  I've found the original wiring will support one horn, but not both, just too much current for the old wires and button to handle!

piet
 
sfcpiet said:
Follow the given advice and throw them away, investing such an amount of time in attempting a repair is pointless when compared with the price of new ones. 
Click to expand...

That's not necessarily true Piet. It's OK if you're working and have a reasonable income. But for retired blokes like myself who have an abundance of time and a small income, it makes sense to fix things rather than throw them out.

Voxbell horns are simple devices and can be easily restored to working condition. I've done a bunch of them. So don't chuck it away Carlos. Give it to someone who can use it.
 
Cam worked me through fixing mine, and some other bloke told me the long forgotten secret that stops them working. They have a tiny drain hole that is bloody hard to see that needs to be set at the bottom of the horn or they fill with water and rust.Only took me 30 years to hear about that.
 
Dellortoman said:
That's not necessarily true Piet. It's OK if you're working and have a reasonable income. But for retired blokes like myself who have an abundance of time and a small income, it makes sense to fix things rather than throw them out.

Voxbell horns are simple devices and can be easily restored to working condition. I've done a bunch of them. So don't chuck it away Carlos. Give it to someone who can use it.
Click to expand...

Agree to a part Cam.  Yes, they are simple devices, and can be repaired.  But, the ones I've opened in an attempt to repair, landed in the scrap... usually a too-far gone rusty mess with corroded-off contacts, etc.  Even if you get one to work half-decently, cleaning up the entire assembly, making a new gasket and sourcing screws to put the sucker back together, possibly re-chroming the grille, just doesn't make much sense to me as long as a new set costs under ?70.  But then, I'm not yet eligible for pensioning.  Maybe I'll change my mind in 5-6 years. :D

piet
 
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