I have a 2014 Nissan Titan that I lost sound to about 2 months ago. I diagnosed about everything that I could on it and the problem seems to be the amp, as the radio still has power, but just no sound coming out of it. I ordered a stock amp and tried to put it in, but am unsuccessful in finding where it is under the dash. I found a black box with 3 connections, and the harnesses are different from the amp I ordered, and the amp of course only has 2 connections. I have read on here that the amp is behind and above the gas pedal on the firewall and has a blue connection on it. I have looked multiple times and still don't seem to find where the amp is. If someone could help me out to find the exact location, and possibly send pictures, schematics, etc., it would be greatly appreciated.