bare with me this is a long one to explain
I have had six bmw z3s all of them have had pants keys that work only when they want to if at all when it comes to central locking. With my current build I have fitted a toggle switch hidden so you can lock,unlock the car without relying on the button on the key. I have fitted alfa handles on my kit with the travel in the door lock it's near impossible to lock unlock it off the key with the alfa handle. so I am thinking of a switch in the door that will lock it by using the key in the door handle connected to the central locking. so problem the key always returns to the middle on the door handle it needs to stay up or down on a toggle middle is off .bmw works on 3 wires one permanently live, hold live to either of the other two wires it will lock hold it on the other unlock, but needs to stay in position . any brain boxes reading this got an idea around this
