I have a Viper 5901 alarm/remote start in my truck that I'm looking to ramp up the security on.
I currently have the built in shock sensor, glass break sensor, backup battery, and the external "armed" light.

I also have a tilt sensor I plan on running inside the toolbox and I ordered the proximity sensor as well for in the cab.
I have the included siren mounted inside the rear door, which is nice that it can't be disable easily, but of course limits the sound, so I have ordered a real motor driven siren that will be mounted in an undisclosed location (just kidding I actually haven't decided where it will go)

In addition I will be getting security bolts for my sub and amp so they cant be removed with a standard screwdriver.



reason being both my friends had their cars broken into in their new apt, after being there like a week, and since I'll be there a lot on weekends i'm not looking to take any chances. OK so one of them left their car unlocked but still..


Now the question. I am wanting to I guess trigger both sirens and also my hazard lights with the alarm activated. I know I will need a relay to do this. But is the brown wire (siren output) a constant voltage that I can use as a trigger? just wasn't sure if it had a variable current or anything to control the siren, if it is all controlled by the siren itself. Or if a varying current even matters in a relay.

And in case anyone is wondering, I am wiring into hazard lights with the trigger because the 5901 brain's parking light output (white) is dead.

here is a link to the install guide:
http://www.directeddealers.com/manua...2008_08web.pdf

I will also document my progress...

 

Sirens are generally just speakers.
What worked some time ago for a friend of mine whose stereos were swiped a couple times was to solder fish hooks to the outside of the case.
They only broke in once after he did that.

He was Pi$$ed cause he lost the blood trail.

 

Now that I think about it, the siren does chirp for a warning or will do full siren, so it must get some different signal from the brain. so if I had the siren hooked up as usual, and wired a relay inline for the second siren and hazard lights, would it activate with the full siren and the chirp? how much current is needed to activate a relay normally?

i'm guessing the hazards are on a relay already so if I tapped in past the switch then they would be activated as well without overloading anything, correct?

 

You can't use the siren output (that goes to the speaker) to operate a relay,if that's what you're thinking.

 

you should just have a mine field around your truck

 

I would use the H1/9 black/white wire to trigger a relay.Be sure the relay coil draws 200ma or less.