Electric windows and AC/Heat blower does not work. No power in fuse box. Help?

I'm sorry pushrod. I entered the wrong vehicle. The right one is a 1991 Dodge 2500 W/diesel engine. Question is the same. I appreciate any help. Thanks, shirttail.

This truck has multiple fuseable links that can burn and cause this problem, you need a scematic but i dont have access. For a fee you can get one at www.alldatadiy.com or maybe the libary.

Thank you Pushrod. I'll proceed from here.