I just bought a used pick-up that has a viper system installed.

Here is what I know it has.
2 - 4 buttom remotes (lock/unlock/Aux/and a yellow button)
An antenna installed inside for more distance
It replaces the factory ford lock/unlock remotes
It has remote start if you press the yellow button twice.
Auto door locks when you start to move.

Since it is used, I dont know what model it is. when you lock the doors, there is no chirp. And I dont recall seeing a aftermarket siren under the hood.

I know if you hit the Aux button and then the lock, the factory horn beeps and the lights flash to let you know it is locked.

Is there a way to keep this setting, so everytime you lock or unlock the doors the horn chirps??

 

That's a little werid. The 4 button should be lock, unlock, aux, & panic. Remote start should be lock/unlock buttons at the same time. Aux should toggle the chirps on & off. Like pres aux then lock no chirp, pres aux then lock again & chirp.
What truck is it installed on? If you press panic does the stock horn sound or an alarm siren?

 

It is installed on a Mazda B4000 pick-up (ford Ranger)

If I press the Aux and then lock, the horn does beep. But that is it. The next time it wont unless you again hit the Aux button.

Yeah, the yellow looks like a panic, but when you hit it twice, the truck starts.

 

If you hold the panic down it should trigger the alarm.