Thanks-I had a Tesla repair guy check and there is no power on the two outside wires. The middle one has 10V which he uses for diagnostic purposes. Where is the fuse box located?Which wire are you using? There are three. Count them like this. 1 - 2 - 3 - empty
The #1, the only outside wire is 12V persistent. The middle #2, we don't use. The #3 is black, its ground.
The #1 has been reported to be different colors, so we can't tell you for certain its color. Although #3 is black.
As for fuses, I've seen to different spots in the fuse box reported as the fuse. Both #50 and #100. I don't know what's correct. Could be depend on year of car. However, it does not matter to me, because I am putting an inline fuse on the camera anyway (always).