I have installed a head unit its about a eyar old now its a panasonic and recently i started having a problem off the head unit turning off and then turning back on. i also have a radar plugged in to the cig port that also turns off to. The head unit harness is ok i rechekced everything weven redid the harness , the head unit is also grounded. may i be over powering the fuse ?

 

Sounds like you have a wire that is randomly loosing connection. Triple check your wires for bad connections if you can't find anything i'll give you a few more tests to try. But definately you have a loose connection somewhere.

 

sorry for leavig that part out i have te red wire in the plastc peice that all the wire go to is broken inside but i did my best to have it stay in w/ hot glue and zip ties that mayb casuing the problem. i need ot go get a new harness.. one more q does the harness need to be grounded ? b/c beore it wassnt and my frined had this head unit nad it wasnt grounded do you thin i should keep it grounded still ?

 

YES you need to solder that wire back together hot glue is NOT going to hold that together. While your at it you need to solder and shrink wrap all of the connections to prevent further problems.
What do you mean grounding the head unit? Grounding the stereo chassis directally to the dash chassis? If that's so then go ahead, it's not going to hurt as long as you have the headunit grounded through the wire harness.