Aftermarket keyless entry w/fact.alarm
 

Ok, its time for outside help. I've installed aftermarket keyless entry on my 87 300E. Works like a charm (one wire to cut, 2 relays, proper pulse duration, etc). The only problem is that it will arm the factory alarm while locking, but will not disarm upon unlock. The result is loud and predictable when the door is opened. Am I missing something very obvious? The unit has a disarm output but connecting that seems like a duplication of what the system is already doing (throught the blue wire from the driver's door). Help Please. Thanks, Hanno.