Hi all,, just bought this on ebay item number 200065151174 looks good but after reading a lot about wiring on this forum am i right in saying the earth is the switchable wire ie if i wanted to wire it up so as when i hit reverse the camera and screen becomes live i have to have a positive feed probably from the ignition and the earth would cut into the reversing light circuit, if you get what i mean, i think i have confused myself, any help would be greatly appreciated..
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