00 pontiac grand prix door trigger

Are ya ready? I have never worked on this type of car (I know, it's just a GM) Compustar CM1000, plain old alarm. I set the door pins like so.

Testing all with my meter. all triggered when opening the described doors. I tested the drivers door, then the rest. I hooked only the drivers door. Upon arming I get an instant alarm trigger. SO.... I wait till the dome lights go off before arming....same result.

So, for laughs I went to the under dash light negative trigger. It works with ALL the doors, testing with my meter. Make the connection, arm/lock, open the dorr.....NOTHING. No trigger for the alarm.

Locks function, trunk pop works, light flash as they should.    Yet I have the problem as described abouve.

Can ANYONE shed some light on this?     AND of course, thank you in advance.

This is an idea I might need to try. If this is the case.... I'm not that happy with the compustar unit. The negative trigger at the BCM should be more than enough to do the job..... it always has been in the past?

I am not triggering the tan (drivers) door pin when arming the compustar. This is one way to trigger the factory security, wich has NOT seemed to be a problem. The customer has only 1 key, and no factory transmitters. So as far as changing any of the programming on the factory security, we're stuck with how it's set up now... This car belongs to a guy that, well, we have a language barrier. He is more than likely NOT aware of the fact his car has a salvage title. In the state of Washington they tag the door jamb with a sticker. This car has been wiped, and put back together.

I won't see the car till NEXT Sat. so I'm on an information gathering mission.

I think Salvage might be a red herring except:- did you check door contacts before starting? Yes I know, we've all been there!

Tan for 1 door contact, blue something for other side, what illogical idiot specified the colours? Must have worked for Peugeot!

Not knowing much about the Peugeot auto's this statement still gives me a chuckle. I my self, laugh at GM, never been a Chevy guy. But then again , most of the U.S. auto makers have allways looked for an "easier way" rather than the "best way"  IMHO.  I'm sure there are plenty out there that would argue this.

ALSO, the term "red herring"  I'm thinking this must be the same as a "red flag" I did give this some thought, but all of the doors and the 37 lights that are turned on when opening work fine!