I am running an Avital 2300 in a '93 astro and would like to use the second aux. to drop the air-ride sus. (white wire w/blue stripe). I have a directed 528t pulse timer. The alarm gives a neg pulse and the air-ride uses +12 volt to drop. Not real sure how to make it all work. (never messed w/ air-ride before). Thanks for the help!
You don't really need the pulse timer, you could just hold the button down for a couple seconds. You can just use the output of the alarm(or timer) to a relay to up the amperage and control multiple relays. Then you use 4 relays, 1 per solenoid, and tie into the wire for drop.
Same goes if you do use the timer, set for 5 seconds and use the output to the first relay.
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Assuming you need high current relays to drive the +12V to the suspension bits, hook up the extra relay auex mentioned, with one side of the coil getting a constant 12V, and the other side connected to the alarm (-) output.
Then connect a ground wire to the common (COM) side of the relay contact, and the normally open (NO) side to one side of the relay coils on the four relays. This uses ground switching control of the four relays, which is better if you have long wire runs, by not having a lot of 12V powered wires everywhere.
Connect the other side of the four relay coils to a constant 12V, so now whenever the alarm (-) is active, the four relays should energize and click on.
Connect the COM side of each of the four relays to constant 12V.
Connect the NO side of the four relays to control the four air drops. The normally open contact will put out 12V whenever the relays click on-
Add fuses to the wires as close as possible to the 12V power source connections so if a wire shorts out somewhere, it'll protect things.