I was driving the other day and all of a sudden my Sub stop working. When I looked at the amp, I saw that the led wasn’t turning on. What needs to be connected in order for the led to turn on?

I check the fuse on the amp and the fuse by the battery and both seem to be fine.
Is it possible that the actual power cable could go bad?
If the amp is totally fine what could cause it to stop working?

Thanks for your help in advance

-s5nake5

 

Could be the ground or the remote turn on..