Cap problem
 

I have a 5 farad cap with both + and - feeds. Earlier my amp stopped working and I checked the voltage on the amp of course cause there was no power and it was showing 3 volts. I went back to the cap and it showed 13V in and only 3 out. Any suggestions on wtf is up with that?

ground went lose or if the cap has a remote wire that probably went lose.

Thanks, I found it earlier but the remote wire to the amp was loose. All good now.