I just recently purchased a Viper 790xv 2 way alarm.. It works great and has incredible range. I got it for a great deal too, $280 installed. Im loving it so far.

Initial testing of the unit confirmed that the shock sensor was working well. It took a pretty good hit to set it off though. Yesterday i was testing it out, and noticed that it wasnt very sensitive at all. All the triggers work, but even a hard hit doesnt set it off. How do you adjust the sensitivity of the alarm so it will do off when it should? I dont see any adjustment on the brain.

 

need to find out

 

If you don't see any adjustment screw in the brain, look around the steering colunm or else where for a lil black box with LEDs and adjustment screw(s). Also, a four wire plug comming out of it. If none of these exist, then the adjustment is done from the remote. Read the manual.

 

not in the manual.. ive been looking for it.. I also checked the brain, and i see nothing?

 

The viper 790xv has a CLEAR shock sensor, a white 4 pin harness from the brain leads to a clear box , on one side of the box (small enough to fit in the palm of your hand) is an orange dial inset in the shock sensor, use a small phillips screwdriver to adjust. Clockwise for more sensitive, counter-clockwise for less sensitive....now the hard part might be finding the shock sensor. It should be zip-tied to a bundle of wires or an air vent under the dash.

 

thanks.. now i know what to look for