Can anyone recommend a good dual stage shock sensor for the factory alarm?

Where would you connect the prewarn wire to?

 

DEI makes a pretty good one. There is no place to hook the prewarn up to. Your only real option is to wire the 2nd stage (alarm) to the hood pin (must diode isolate). I have a feeling that in the near future there will be a device released commerically to integrate ANY sensor you want with the factory alarm (full alarm and warn away).

If you have any questions let me know.