Need to hook my engine bay electrical without an engine

[Devin]

I'm replacing the engine in my 90, but I came upon a problem. I removed the largest of wiring harnesses from the engine bay and so I have no power. What is the minimum amount of stuff I can hook up to achieve power to move the seats and open the windows?
Also, does anyone have a good picture as to where I can hook up the wires?

 

[SHOZ123]

If the 90s have the underhood fuse box connect the battery to the post on the end, otherwise the starter cable would be good. Be sure to connect the battery ground to the body.

 

[RStalveyARFF]

underhood fuse box began in 92.