Ok y'all. Have not done much stereo install other then head unit. Got a Fosgate amp R250x4, 2 fosgate 6.5 and one Custom auto sound 4.5. I did not install this system. I am just trying to fix stuff screwed up when they restorodded a 65 Ford F100. Driving me nuts. I am good at wiring and diagnosing in vehicles. Unlike whoever did this for my boss. Deck is a Custom Auto sound. Checked power feed and I got power on both sides of the fuse and to the amp. Ground seems good but planning to check it. Amp has no power. Help please.