Let's be carefull out there
Join Date: Jan 2006
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It's an alarm for the hard of hearing, they see the lights and run off, or maybe it's so the neighbours don't get upset.
fun over, have you tried making sure it is wired to the siren / horn correctly as that may be the problem.
Currently in chris m's garage:
2000 Scenic 2.0 16v Monaco, BMW 3 Series, Pug 206