Recently had to crawl around under the Kia Sorento and find why the TV was not charging the trailer battery while driving. Found a crimp-wire connection in the rear bumper had come loose, simple enough to fix. Decided to replace the crusty 7 pin male connector from the camper while I was at it. I was three beers into the job and was looking at the wrong 7 pin connection diagram (inside vs outside connections) and managed to reverse the power and ground wires (reverse connection solenoid on the battery cable saved the day, no harm done. Drinking and wiring don't mix). I've always wondered whether the 12v power pin was "hot" when the TV was turned off (so many conflicting posts on whether leaving the camper plugged in to the TV overnight will drain the TV battery). I generally disconnect the TV once I'm at camp, but leave it connected for overnight stops, etc. Poked around with my multimeter and found that on my 2017 Kia Sorento the 12v pin is not hot if the vehicle is turned off (and not on ACC). Looks like the tech who installed the brake controller and 7 pin connection at Camper World wired the 12v pin to a "switched" connection on the fuse block so no power supplied unless the ignition is either in the "on" or "acc" position. Many conflicting posts on this subject never mention this contingency.