So i just bought a Avic-Z140BH from someone on craigslist, and when i went to install it, there's no audio. I double check my connections and figured out that the system remote does not have a signal. I hooked up a different Pioneer radio and it turns on my PPI amp just fine. 

 

I'm positive it's the system remote wire not sending any signal to the amp to turn it on. Is there a specific setting in the unit to turn it on? or is the unit just bad? Any way to get another signal to turn on the amp?

 

Thanks 

So that means if you have a built-in radio antenna amp in the car, you will need to switch that on as well.

 

You can purchase 12v turn-on delays, and have it triggered by the switched wire to the radio.  You will need a unit that can be set to a very long delay (i.e. up to 30 seconds) ... otherwise you will get a loud pop when the radio boots up and turns on it's preouts.