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Hibrydsoul wrote:So I've wired in a GPS tracker in a friend's car and encountered that the door sensor has only one wire as opposed to older model cars that have two wires. So part of the mechanism for the GPS and most alarms is to be wired to two wires one signaling when the door is closed and the other wire signals when the door is opened. So I figured I would wire the GPS door wiring to his alarm only to realize that only the green (-) wire was wired and the purple (+) was condemned. So it got me thinking to use the same single wire that indicates when the door is open and use it as lead for a 5 pin relay and wire it normally close and condemn the 87 terminal making the GPS think that the circuit for the door is complete when the door is both closed and open and not just opened alone. What are your thoughts?
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