Sorry to be "that guy" but this looks like the most knowledgeable forum for these vehicles, so I'm gonna ask away!
Car: 2019 Nissan Leaf+ SL
I wanted to install a a dash cam, and it seemed to me a great place to wire it in would be the 12volt power going to the auto-dimming mirror. I clipped the wires, used my multimeter to figure the positive/negative (red/green, imagine that) and spliced in the voltage adapter.
Everything seemed to be fine, but I noticed a few obvious problems pretty quickly. The climate control panel is completely off, the radiator fans turns on full blast, and every time the car is started (actually maybe when stopped) I get a message to email and nissan connect that my security alarm was triggered. When I plug in to 110v AC the rad fan starts there as well. I have an OBD2 plug which worked on my 2016 leaf and currently still works on my wife's car, and it does not light up at all.
The mirror seems to work fine, so it's not the fuse connected to that (what's the third wire?), I hear a relay click about 4 times towards that back driver side of the vehicle. I've taken a look at every single fuse that I could find, and they're all fine. I pulled the AC relay, and not knowing exactly how to test it, probed the resistor pair, and got .07 ohms, not sure if that's good or bad. I attempted to "reset the car buy unplugging the 12 volt battery, but that only seems to revert a few settings. Plugging or unplugging the rearview mirror doesn't have any effect either, currently the dash cam is not wired in at all.
Any ideas? I'm not thrilled about driving it monday and tuesday before the dealership has a space open, and I'm not thrilled about taking it to the dealership.