Car Completely Shuts off while driving
 

Hello,
I have a 1997 Nissan Sentra
The sentra shuts off while driving. When it shuts off there is no electric in the car. The car completely shuts off, no engine, no lights.
In order to start the car I have to open up the hood, touch something like battery, engine and than it starts. Sometimes I don't even have to touch any thing and it starts.
Recently replaced a battery, performed a full tuneup on the car. Alternator is also new.

wow! Its totally blacked out!It never happen to me... does it still has diesel?