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Li S3 horn troubles.....

Technical help for Series one, two and three Lambrettas. Models include the Li, Li Special, TV, SX, GP, Serveta and API/SIL models

Li S3 horn troubles.....

Postby LammyS3-1991 » Sun Jun 17, 2018 4:09 pm

Hi

Just looking for a bit of advice I have an original genuine S3 horn fitted to my Li S3 it’s been working absolutely fine but all of sudden it’s been sounding every time I accelerate without me even touching it ( & no buttons are stuck etc )

Can someone please give me some advice

Many thanks :)
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Re: Li S3 horn troubles.....

Postby rossclark » Sun Jun 17, 2018 4:35 pm

The horn button usually makes the circuit to earth so the horn sounds.

You've either got a frayed wire or the switch is shorting at the back.
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Re: Li S3 horn troubles.....

Postby LammyS3-1991 » Mon Jun 18, 2018 6:16 pm

Thanks Ross I will do some investigation
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Re: Li S3 horn troubles.....

Postby a.lo » Tue Jun 19, 2018 4:53 pm

if it is when you accelerate I would suspect the throttle pulley is making contact with some headset wiring, may have rubbed through the insulation.
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