Rep Power: 0

I did a search online and on this site with various results (I'm gonna leave my "opinion" of what could be causing this to keep the thread open to new ideas/thoughts).
My veh: 2002 honda civic 2-door manual (not vtec).
Problem:
I'll be driving and my stereo/ GPS (plugged into the socket) will suddenly shut off and restart. This has happened both driving in town (20mph) and on the freeway (70mph)-sometimes this is accompanied with a "clicking noise" from behind the dash. Now its worse as I'll be driving and the same thing happens with my stereo/GPS but now the engine will shut off as well. This happens randomly, sometimes shortly after just starting to drive or sometimes 30+ minutes into my drive. When this happens the odometer and tachometer both go down to zero (no reading) and most of my dash lights come on (such as the "SRS" light, etc) along with my stereo/GPS. I keep it in gear and it will sometimes start back up, while other times I have to put it in neutral and turn the key again.
*It might just be a coincidence, but the problem stops if I turn off my CD player/ GPS...

What could be causing this???
--thanks a ton in advance!!!!