I recently had a new stereo put in my 2005 350z At a stereo shop and when I got it back my a/c is not coming on. My 2nd and 3nd ***** light come on but my first **** light doesn’t. There is no noises coming from the car. What can it be? Fuse? I took bottom shifter console back out and cleaned the ribbon plug and plugged It back into climate control and made sure it was connected good in the controller but still nothing.

 

Might be a relay for the blower motor. The relays are tricky to get to. The fuse box for this is located to the left of the pedals. The relays are on the BACK of this box, hence why it's tricky to get to. You'll have to pull out the box to access the relays. However, FIRST check the fuses to make sure they're good. Also check the wiring to the new stuff to make sure they didn't mess something up. They could have cut a wire by mistake going to the climate control and not soldered it back.

 

So the Relays are not behind the battery for A/C?

 

Well as it seems the blower isn't engaging (air isn't coming out at all), sounds like it could be the relay for the blower motor. It's not a fuse, it's a black plastic block (relay). Try replacing that to start with

 

I find it hard to believe there is a fuse panel behind fuse panel on driver side under dash by dummy pedal. There is nothing in manual or online about that location. I have checked two blower fuses under dash and behind battery and they are good

 

It's not a fuse panel behind a fuse panel. It's a double sided panel

 

Sounds like something with the meter amp. It also controls the climate control. Check that the ribbon cable isn't damaged. Check the amp itself for damage (white box under the stereo).