Wiring alarm in trailer needed

I am putting a basic car alarm in my trailer that had a battery in it with a solar cell. The alarm works except it auto arms because you either have to turn the key to acc or open the door. I don't have the door switches hooked up yet (not sure how). How would you hook this up without a key and where do you wire the door switches? I have the alarm working as well as the shock sensor but like I said it auto arms without the acc or door.

More than likely, the trailer will not have door triggers and you will need to add them. as for ignition, you would need a way to turn it on then off like a switch.