Wiring up amp/installing amp

Can't find schematics for ava 400tr boss amp. Jensen MP6212 car stereo/boss ava 400tr amp. Amp is swapping over to protection mode.
Could it be a ground? PLEASE HELP :)

Disconnect all the wires and make sure that their all connected to the right terminals. If not positively sure trace all wires back to source. If you ground and power is swapped it will automatically go over to protection mode.