2008 ford focus, remote start

Hey, the door trigger's on my car go to an open circuit when the door is opened. How do I diode isolate them so i can get my 689m module to work?

Any thought to check pin outs on engine and or gearbox management to see if there's a neutral safety switch?

anyone have a idea on the door trigger pins yet? shows ground when door is closed, open circuit (neither high nor low) when door is open.

Can't remember the part number but DEI make an interface for this, incidentally on Euro Focuses (Foci?) from about 05 on we go to the dome light feed which goes neg when the doors are open, check it out to see if US versions are the same then use that but put diodes across the 12v+ feeds to all the bulbs with the bands towards the bulbs.

I tried making the circuit that bigdog posted and It doesn't trigger the 689m. i'm only reading ~6.5v from the trigger wire when i have the door open?? https://www.the12volt.com/installbay/forum_posts.asp?tid=102297&get=last

well figured out a circuit that works for me. Using a NPN transistor ~1.47k ohm resistor and two diodes. it works like a champ. diode isolate the tigger wires. then put the resistor on it and direct it to the base. take the neg door trigger sense wire from the 689m and put it to the collector and just wire the emitter to ground. works so far. The only problem i have now is the RAP feature on my car. Radio stays on after I close the door for the 689m. I'm thinking if i take the fact alarm rearm wire from the R/S and have it open the circuit on the SJB side of where i tapped into the door triggers for my transistor it should work. I'm gonna go play....