Yep - I'm pretty sure that's where your F'up was!! And you figured it out now yourself. Your car is too new to have something wrong. I bet you a few hours rest with no terminal neg on will fix it ......... just remember to have everything that needs to be plugged in or hooked up, together before reattaching your battery, or it will happen again.
Glad to help out and much thanks for this forum as everyone here helps one another!!
