Reverse light issue

[Miklswab]

Hey guys I tried to search this with no luck.   I got into a bit of a battle with a tree a few weeks back in my 18 sierra. The tail light ended up getting torn out of the box and it pulled the harness pretty badly.  A couple of the wires had the sides stripped a bit.  I'm going to get a new harness and have taped it up for now but my LED bulbs I put in are staying on all the time.   I checked voltage at the reverse socket.   With the damaged side disconnected I get a reading of 127 mv.  With it connected and no bulbs in I get a reading of 2.5v.    With one bulb in 72mv.   Has anyone ever tested the voltage of the reverse socket on their truck ?   Is this a normal reading for this.    The whole reason. I'm asking is that 2.5V is triggering my LED bulb to be on enough to keep my backup camera to be on all the time.  With factory bulbs in there isn't enough power to trigger the camera.  Any help would be awesome !!   Thanks