Hello,
I am new here and am eager to learn. I need a device or circuit that can have a ground on one side and power on the other side like a light bulb. What I mean is that I need to feed a ground signal back on the a 12vdc power wire when there is no power supplied, but then when the voltage is supplied it will not short out due to the fact that the other end is shorted to ground. It works exactly like a light bulb, a bulb has continuity and so there for ground will travel through the bulb to the source of the power, but when power is supplied the bulb lights up and there is no problem. however I cant use a light bulb for this application, i need something that replicates this principal but without the light bulb. I have a line that is 12vdc when turned on, and I need to tee this Device or whatever will do the job, to the 12vdc line and when it is switched off it will produce a ground on the whole 12vdc signal wire. Hope this makes some sense, as I found it kind of hard to get my point across in this application.