autostart 4500 problem

i have a combo alarm remote starter in a civic 90 dx 3 doors. my problem is the alarm sound without any reason. change unit and shock sensor for a new. the problem always presnt . i use one diode for trunk and one for doors.(i have one input for both)  i'm try to use diode in other side but alarm not work. the led flash 4 times for false alarm indicate doors is open .

tank to help

pat

ok jeff . but in wiring diagram the  wire for doors pin is the dome light . i'm use this wire . but the dome light when passenger door is open the light from the dome light  is more strong and the light from open driver door is very low. it is possible is my touble?

tank

pat

Doesn't really matter, as long as it's grounding you will have a signal. The problem your stating is that it falses with a door trigger notification from the alarm. Make sure that the trunk trigger is sending a (-) pulse ONLY when the lid is open. What you can also do is disconnect one of the triggers for a while until the alarm falses again. The n you will know which one it is.... the hatch or the doors.