So ever since i pulled out my alternator ,and it sparked when I started because i forgot to unplug the battery, i believe it has been shorting out. I will be driving and the stereo will shut off and the guages tweak out and its almost like everything shuts off for a split second but the car continues to run... Im starting to get worried since all my fuses are fine. anyone have an idea on what this could be?

 

oh and its a 94 z28 just for the record