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What is the object attached to the center back of the engine compartment of a 1996 Volvo 850 as circled in red in the photo below:
According to this video it is the horn for the alarm system. It is separate from the horns mounted by the radiator.
And eEuroparts.com shows the item as Volvo Alarm Horn - Genuine Volvo 30796932
Looks like a horn to me, but hard to tell from the low-res photo.
Does it have electrical or vacuum connections going into it?
Required, but never shown