aux output for sound system

hey, has any1 used an aux of a remote start/alarm to operate a sound system before? like trigger a relay to power the accessories for an amp/deck? if so can you fill me in on how you did so? dont fell like testing then frying sumthing. thanks

So you wish this to operate when the vehicle in OFF/

You wont be frying you will be cooking - your battery, if you set the output to timed, you get about 3 mins., if you latch it it  will be on permanently. A bad move.

i have an alarm that will have a 500ma max latched output. So just run that to a relat to switch 12v to acc wire to ruen on my deck and im good right? I dont mind about the time i run it. i have an amp/sub but they only 400 rms and i wont even run it that long. well thanks for the reply. have to find time u open up my radio and run some wires

you need a latching relay to do this. i use to do that in the 80s with a vse alarm and it works perfect. you hit the button to turn on and hit again to turn off.

I just put a Python 1400XPL in my personal truck, I swapped it from a 551T. I wanted to be able to turn the radio on and off with the aux channel. I set the Python to have the aux output as latched, reset with ignition. I powered the second accessory wire in the truck with the relay (this circuit is not required for remote start so I never powered it with the 551T). Yes, if I happen to leave it on too long it will kill the vehicle battery but being my own vehicle I am willing to take that risk. This was actually prompted by a family function recently. I turned on my system with the key to the accessory position to have music outside. After about 20 minutes I decided to remote start the truck then remembered that using a 555F the truck would see 2 pellets....meaning I could not remote start it with the key in the accessory position. I did not feel like going through the trouble of wiring up a relay to kill the 555F with the keysense wire. So, while swapping out the remote start I used the aux out in the same manner you are describing. I personally like it, just keep in mind that if running amplifiers with the vehicle off will not only kill the battery, it will stress the amplifiers.Installer, IT support, and FFL. I need less hobbies.

alright, thanks for the input everyone. My alarm does have a dedicated latched output, untill key in ingnition; so no need to get a latching relay, a normal relay should be fine for my application. time to rip apart my dash and run some wires, i know it will stress the batt, but i hope my caps can just keep less strain on my batt for a while. As u mentioned twelvolts, im willing to take a risk myself lol !