i've installed autopage rs-655 on 1997 plymoth voyager the horn is (-) so if i hook up the siren from unit it's fine but when i hook up the horn on a relay and the alarm goes off the horn blows constantly
how do i hook up the siren and the horn to work together since the unit have only one output for horn or siren
thanks in advance
The siren requires a constant output, but the horn needs a pulsed output (for the 'honk honk' instead of continuous sound.)
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I'm not a professional installer. But I did stay at a Holiday Inn Express.
I know the siren is constant and the horn needs a relay for (honking) got that part hooked up
but how do i make the siren sound off constant since the unit only have a output for the (siren or horn )
what i'm asking is how to wire a relay up for constant sound from alarm
What you need to do is hook up your siren as it should be. Then take a tap or splice into the positive wire feeding your siren and install that lead onto a flasher that you would use for your turning signals which you can buy at pep boys, autozone, or any automotive supply store. Take the other terminal from the flasher and run that to the positive coil on a 12 volt relay. Ground the negative coil side of the relay to chasis. Next, ground your common side of the relay, and hook up your normally open contact to the (-) output to your horn honk relay where ever that might be located in your car. So every time your alarm goes off, your siren will go off, and the signal you feed the flasher will pulse the relay and make your horn honk every second or two.