Hey all! Newer to the Infiniti scene, I got a 2008 G37. I bought one of those Tesla screens and went to install it. I got it in, but the climate controls weren't working properly. I tried a different harness (the radio came with three different harness setups and a CAN bus box), and now I have a car that will start, but all the gauges are dead, although they are all lit up! It also wont go into gear. I can't find any blown fuses. I took everything out and put the original stuff back in; the gauges are still down, and the climate control doesn't work at all. Any help would be greatly appreciated!

Update: av box was plugged in incorrectly