05 toyota tundra alarm trigger problem

Installed a Black Widow Z1 alarm/autostart on a 2005 Toyota Tundra.Alarm (siren)goes off a minute after arming.I have used the individual wires at bcu dr-gray/red gray plug,pass frt lt GREEN/ blk black plug,Lr RED / white gray plug and Rr RED / white black plug. Temporarily i have tapped into the supervision blue/black wire.The reason iam saying temporarily is because of another issue which is the auto rearm feature when activated even after opening a door,rearming does not cancel,led keeps blinking and arms the alarm.The same happens with individual wires. Any feedback will be very much appreciated.

It definately sounds like a door contact problem, the re-arming problem points that way, test all your door contacts  the dome supervision, and your grounds,  a bad ground could also cause this, last of all make sure the plugs on the alarm module are all pushed home properly.