96 chrysler town&country disarm

     I have installed a remote /start keyless entry on a 96 Town&Country van, all works fine but I can not get the factory alarm to disarm, It goes off when the car is started with the remote start. I have the door locks working properly they will arm and disarm the system,I did have to enable 3 second pulse to get system to disam when unlocking.  The problem is I have hooked up the factory disarm wire from the remote start module to the white /red disarm wire at the bcm module with a 680 ohm resistor and it still won't disarm. If I arm the system and ground the WHITE/ red wire through the resistor it will disarm, it almost seems that the remote start module is to fast for the factory system.The system is a Prostart 2300. Any help would be greatly appreciated. Thankyou Paul.