370z problems after I installed Kenwood bt322u

[Zeetah]

Installed my Kenwood single din receiver bt322u, 2012 automatic z, the 3 climate control dials light up except the dot in the very centre on all 3 do not light up, no heat or cold work, the sound from music only seem to be coming from the dash speakers, door panel speaker and the ones behind the seats are super low in volume, almost non existent, the max volume goes to 35 and it the equivalent of the oem stereo on volume 18 to 20, hardly any bass and not super clear, I played with all the eq settings to what crutchfield told me and still nothing, after driving for 1 hour, I parked, came back to my car 1 hour later and the "service engine soon" light is now on and it seems the Z goes in one gear and doesn't change automatically anymore

Kenwood killed my Z