91 240sx, Door Locks

Can anyone assist me....

I have a 1991 240sx, with power locks..factory.  Actuators on both doors.  When i lock the doors I have to hold the handle up...If i dont the door will remain unlocked.

I would like to have the doors lock off my alarm...Commando 520-s.  I am having difficulty setting up the appropriate wiring.  Can anyone tell me if it is a negative...positive...3 wire...system? And which diagram on the 12 volt would apply.

Thanks for your assistance on this matter.

yes, when the door is closed flipping one of the doors locked will automatically trigger all doors to lock and vice versa....I am absolutley sure both have actuators, as using the key to open either door triggers the opposite to open as well.

So again what does this tell me ?...which type of switch system do I have....and can you recommend a wire diagram to hook this system up?

Thank you for your assistance...

p.s. good to speak with another manitoban!! I was from winnipeg...8 years in cali now.

Actually in regard to your last statement how do you test the doors?  Cut the door lock wire when the doors are closed?

which is supposed to be black and orange on this car...from what i have researched.

i did door lock on one there right to the top left of the kick use two relays