Check out this post on a Maxima forum. This would be ideal. The only thing to figure out would be the wiring for the alarm trigger. Other wires for ACC, Constant, and Ground would be easy. Anyone who can easily read through the service manual know which wire we could tap to use for the alarm trigger???
6th Generation Nissan Maxima Community :: View topic - Adding shock and tilt sensors on to 07-08 factory alarm