Quote Originally Posted by 53 Chevy5 View Post
but then I realized that if I open my doors after it sat a while, I would set the alarm off myself. The delay switch would work good for setting it but not for getting back in. When I get Rita back from the shop I'm going to be anxious to wire it up.
Look closer, the module gets it's initial ground through the door jam switch starting the delay. When you leave the door jam switch starts the delay so you have time to leave, close the the door before the delay is up and it starts all over because the relay hasn't latched yet. Open the the door to get in, the module grounds and starts the countdown again, turn the activation switch off and nothing happens, don't turn the switch off and the alarm activates once countdown is done. The trick to this circuit is to set the delay for it with as little time as possible so the crook doesn't have enough time to close the door, yet you have enough time to de-activate.

Want to go a little further, add a wireless remote switch, no delay needed.
https://www.amazon.com/dstfuy-Wirele...NsaWNrPXRydWU=