Originally posted by NC03GT
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That answer is only valid if you know that model alarm has a programmable output. Otherwise, you just destroyed his horns.
Problem #2: siren outputs are low current 1-2 amp outputs that should not be used to directly drive a horn. So if it is negative output siren you would still need a relay.
Being a lead autotech installing alarms daily and not nowing basic things is another reason why everyone should avoid Best Buy installers
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