Clock and head unit not turning on

Well something happened... i ran ground to ground (Using a rocker switch) and now my head unit wont turn on. I was powering the switch from the head unit. [ On a side note where should i power it from? as that place seems inapropriate...
I have no blown fuses and am sooo confused as to what could've happened really, the moment i turned off the switch (ironic in my opinion) the power killed to my headunit, and i cant find a blown fuse to fix it..

 

What do you mean you ran a ground to ground with a rocker switch?

If you ran the head unit ground through a rocker switch to chassis ground it is easy. When you opened the switch the stereo has no return path to the battery. Close the switch and it should work.

If you did something else you need to explain it better...