im going to the junk yard to get a rear window for my 95 blazer but i need to no how to open the window with out having power to the hatch butten any body know how

 

Yards around me will bring a battery out and hook it up (provided the rest of the wiring is intact) to unlock electrical items.

Bring a small 12V battery (or two 6V batteries in series) with you. Bug up to the battery terminals and hit the button.