Factory Alarm Actuate Relay?

Is there a way that the factory alarm when armed could actuate a realay?

Lets say that the factory alarm is connected to 85, and 86 is grounded(therefor when the alarm is armed the relay is closed).  Then 30 is connected to the lock side of the door lock (- pulse)  and 87 is connected to the - input of my remote start(when pulsed negative 1 time the remote start will start).

i.e. press lock 2x and the remote start will start the Jeep.

This would allow the use of the factory remote  to remote start and I wouldn't need an interface box for the door locks, memory seat, etc... BTW Vehicle is 1998 Jeep Grand Cherokee 5.9 limited.

thanks again

-Jeff