Viper 791 XV on 04’ Elantra

What you need to do is use the dome light trigger wire from the unit and wire it into a relay like the first diagramon this link :  http://www.velocitymotorsport.com/images/install_notes/105.jpg

The dome light circuit requires a high current ground and the output of the alarm system is only a low level output ( 200 - 250 mA ).

I connected a relay for the domelights like in that diagram and it works great.

I'm having problems with my shock sensor.  When I hit the car it doesn't activate the alarm.  I sat inside the car and and actually moved the sensor and I did see the red light blink on the sensor but the alarm did not engage.  I recieved a page with the shock sensor displayed but the alarm did not go off.  I'll check other post to see it this is common.

Wow, your having a bad install on that Hyundai aren't you ??  

For the shock sensor, how long after the systems arms do you wait until you try to activate the system ? Some systems have a 30 second to 1or 2 minute wait time before the sensor's will activate the alarm. Check to see if there's a time frame on the system that you have first by arming the system and waiting about 5 minutes and then try to hit the car.

If this still doesn't work, try to relocate the sensor to a larger loom of wires or directly onto the frame of the car or where there's metal. I've heard some people say that metal interfere's withthe sensor, but I haven't had this happen to any of the install's that I've done with a shock sensor installed onto a metal surface. Try it out and post your results

I think I already tried everything you said.  I had dinner with the alarm armed and went back and progressively taped my pillars.  I saw the red light blink on the sensor but the alarm didn't go off.  I was thinking it was a bad sensor but I am getting paged with the shock sensor messege.  I tried different mounting locations and it still didn't activate the alarm.

I connected the basic stuff so the alarm would work but I did not connect any of the ignition harness wires.  You need to insert the key to program some of the fetures and to reset some warnings right.  Maybe the brain has some code in it's memory that's not allowing it to activate the alarm.  To get rid of the nuisense prevention think do you need to turn on the ignition.

I think that's it.  The nuisense protection thing came on so the alarm doesn't turn on.  I don't want the remote start option so what other wires do I need to connect to make the alarm work right?  I think I already posted what I've connected.

Sounds like it might be a bad CPU. Just throwing ideas out right now. I'm not familair witht he system so I'm not sure if there's programming issues or not. Have you tested to see if the trigger is throwing a (-)signals to the CPU ?

Di you connect the pink wire to the ign wire of the car