I switched out my head units today - a swap from a Pioneer 860mp to a Pioneer 780mp. Since the harnesses were the same, I did not disconnect the battery. When I got everything all plugged back in, the HU works perfectly, but now my front amp is not getting power. It's not in protection mode, there is just no power I tried disconnecting and re-connecting the battery, and I checked to ensure that the remote turn on was properly connected. All connections on the harness are good. I tried disconnecting the RCA's and I turned the gains all the way down. No go.
Any ideas? Maybe a blown fuse? What can I do to test?