ford n.c door trigger

I did a 2012 Ford Mustang MT Remote Start. I used tech Doc 1921 under the download section to interface the door triggers. My unit only had a negative door trigger input so I had to wire the 1921 tech doc to a PAC TR-7 to a relay to convert to a negative door trigger. For some reason the wiring with the 1921 Doc didn't have enough voltage to trigger the DEI 8616 relay and that's where the TR-7 came into play. Anyways my question has anyone wired the NC ford door trigger to have a negative door trigger instead of a positive or is it even possible. The negative trigger would have saved me time and money. I drink current, eat ohms, and bleed voltage

why not use the dome light wire and convert that to negative? gray/purple (-) or (+) depending on model @ passenger kick what unit?Ted

2nd Year Tier 1 Medical School

Still installing as a hobby...pays for groceries

Compustar Expert

I originally used the dome light but the dome light kicked back on when the vehicle shut down after the MT takeover/shutdown procedure It a crime stopper RS4-G4I drink current, eat ohms, and bleed voltage

Edit: I meant after reservation modeI drink current, eat ohms, and bleed voltage